Each day, there are between 4 and 5 nonstop flights that take off from Seattle and land in Raleigh, with an average flight time of 5h 06m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 34 flights. The most frequent day of departure is Saturday, when 15% of all weekly flights depart.Fly with Air Canada from Seattle (SEA) † Aeroplan flight bookings are currently only available on the Canadian point of sale. . Book the lowest prices on flights from Seattle (SEA) with Air Canada, one of the 20 largest airlines in the world. Enjoy convenient getaways, smooth connections and premium service.Roundtrip. Flights from Seattle (SEA) to Washington (IAD) with United. How much is a flight ticket from Seattle (SEA) - Chantilly (IAD) with United? ️ Prices were available … Tue, Jun 4 IAD – SEA with Alaska Airlines. Direct. from $275. Washington, D.C..$281 per passenger.Departing Wed, Sep 25, returning Wed, Oct 2.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Seattle / Tacoma International on Wed, Sep 25, arriving in Washington Dulles.Inbound direct flight with ... 1 stop. from $209. Washington, D.C..$227 per passenger.Departing Wed, Aug 21, returning Wed, Sep 4.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Wed, Aug 21, arriving in Washington Ronald Reagan.Inbound indirect flight with Frontier Airlines, departing ... Connect with us. Find low fares to top destinations on the official Southwest Airlines website. Book flight reservations, rental cars, and hotels on southwest.com. Find flights to Washington, D.C. from £111. Fly from Seattle on Delta, Alaska Airlines, Sun Country Air and more. Search for Washington, D.C. flights on KAYAK now to find the best deal.The cheapest flights to Washington Dulles Intl. found within the past 7 days were $257 round trip and $159 one way. Prices and availability subject to change. Additional terms may apply. Fri, Apr 19 - Tue, Apr 23. SEA. Seattle. IAD. Washington.International Routes to and from Seattle For assistance with booking and flight arrangements please contact the domestic and international airlines you are flying with ... Welcome Home. Meet our International Arrivals Facility The Port of Seattle built a new, expanded International Arrivals Facility (IAF) at SEA Airport to meet growing …Use Google Flights to find cheap departing flights to Cancún and to track prices for specific travel dates for your next getaway.Delta Air Lines. Book a trip. Check in, change seats, track your bag, check flight status, and more.Cheap Flights from Spokane to Washington (GEG-DCA) Prices were available within the past 7 days and start at $158 for one-way flights and $318 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Spokane to Washington with no change fee on selected ...All flight schedules from Ronald Reagan Washington National , District of Columbia , USA to Seattle Tacoma International , Washington , USA . This route is operated by 1 airline (s), and the flight time is 6 hours and 00 minute. The distance is 2335 miles. USA. Airfares from $80 One Way, $130 Round Trip from Seattle to Washington. Prices starting at $130 for return flights and $80 for one-way flights to Washington were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. Mon, May 6 - Tue, May 14. SEA. Seattle. Cheap Flights from Seattle to New York (SEA-JFK) Prices were available within the past 7 days and start at $118 for one-way flights and $225 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Seattle to New York with no change fee on selected flights.Watch this route. $118RT. Nonstop | Midweek Fare. Seattle, WA (SEA)to Dallas/Fort Worth, TX (DFW) Best Times to Go. Frontier. Find This Deal. $168RT. Nonstop | Midweek Fare.Flight deals from Seattle to Washington Dulles. Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Washington Dulles? Find the lowest prices on one …Use Google Flights to find cheap departing flights to Cancún and to track prices for specific travel dates for your next getaway.The cheapest return flight ticket from Dallas/Fort Worth Airport to Seattle found by KAYAK users in the last 72 hours was for $98 on Frontier, followed by Spirit Airlines ($171). One-way flight deals have also been found from as low …from £197. Washington D.C.. £197 per passenger.Departing Tue, 22 Oct, returning Mon, 28 Oct.Return flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 22 Oct, arriving in Baltimore Washington International.Inbound indirect flight with United, departs from Baltimore Washington ...Based on KAYAK searches from the last 72 hours, if you fly from Ontario, you should have a good chance of getting the best deal to Seattle as it was the cheapest place to fly from.Prices were found for as low as $34 one-way and $43 for a round-trip flight. Also in the last 72 hours, the most popular connection to Seattle was from Chicago and the …Find flights from Seattle, WA to Washington, DC from $121 (€105). Compare prices, find the best direct flights and book your ticket with Omio today! Prices starting at $130 for return flights and $56 for one-way flights to Ronald Reagan Washington National were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. Tue, Apr 30 - Mon, May 6. SEA. Visit Washington, D.C. Flying into Washington Dulles International Airport is an easy way to start exploring the Capitol Region. Whether you’re heading into D.C. or exploring the wider D.C./Baltimore area, it’s all within reach. Consider renting a car to make it even easier to explore as much of the area as you please.1 stop. from £129. Seattle. £145 per passenger.Departing Tue, 19 Mar, returning Tue, 26 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 19 Mar, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs ...Airport information for your flight from Seattle (SEA) Seattle–Tacoma InternationalAirport (SEA), often referred to as Sea-Tac, is located 12 miles (19 km) south of the city center. Access free airport Wi-Fi while waiting to board your flight from Seattle. The Seattle Airport has a United Club℠ location. Connecting flights between Seattle, WA and Washington, DC. Here is a list of connecting flights from Seattle, Washington to Washington, District of Columbia. This can help you find a one-stop flight with the shortest layover time. We found a total of 2 flights to Washington, DC with one connection: Airline routes; Delta Air Lines SEA to SLC to BWI Search and compare first class flight deals to Washington, D.C.. Fly from Boston from $319. Book your first class tickets to Washington, D.C..Find cheap flights from Washington, D.C. to Seattle from $81. Round-trip. 1 adult. Economy. 0 bags. Add hotel. Sat 5/18. Sat 5/25. Search. Direct flights only. Search …B739. Arrived / Gate Arrival. Sun 07:40AM EDT. 10:25AM PDT Sun. Washington Dulles Intl (KIAD) - Seattle-Tacoma Intl (KSEA) - Flight Finder - Find and track any flight (airline or private) -- search by origin and destination.View Delta's best fares on flights from Seattle for your next getaway. Cradled by mountains and cool waters, stunning nature meets creative cityscapes in the sprawling and colorful Seattle, Washington. This gives visitors flying into Seattle-Tacoma International Airport (SEA) the best of outdoor adventure with the abounding options of a city ...$66 Search for cheap flights deals from DCA to SEA (Ronald Reagan Washington National to Seattle - Tacoma Intl.). We offer cheap direct, non-stop flights including one way and roundtrip tickets. ... Amazing DCA to SEA Flight Deals. The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $110 round …Search and compare first class flight deals to Washington, D.C.. Fly from Boston from $319. Book your first class tickets to Washington, D.C..Use Google Flights to plan your next trip and find cheap one way or round trip flights from Miami to Seattle. Find the best flights fast, track prices, and book with confidence.Singapore Airlines destinations. Flights United States of America. to Washington, D.C. Singapore - Washington, D.C. Travel to Washington, D.C. with Singapore Airlines. Book your flight tickets today, and get ready to enjoy world-class hospitality on your safe and comfortable journey to Washington, D.C..All flight schedules from Seattle Tacoma International , Washington , USA to Washington Dulles International , Virginia , USA . This route is operated by 3 airline (s), and the flight time is 6 hours and 00 minute. The distance is 2313 miles.On average, a flight to Washington, D.C. costs $357. The cheapest price found on KAYAK in the last 2 weeks cost $19 and departed from Detroit Metropolitan Wayne County Airport. The most popular routes on KAYAK are Los Angeles to Washington, D.C. which costs $394 on average, and Raleigh to Washington, D.C., which costs $629 on average.The two airlines most popular with KAYAK users for flights from Seattle to San Jose are Alaska Airlines and Delta. With an average price for the route of $216 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $208 and an overall rating of 8.0.Apr 26, 2024 · Lowest fares from Washington, D.C. to Seattle. Searching for cheap flights from Washington, D.C. to Seattle? Enjoy comfort, premium cabin legroom and free movies with Alaska Airlines. Find the lowest fares today. Airfares from $85 One Way, $150 Round Trip from Washington to Seattle. Prices starting at $150 for return flights and $85 for one-way flights to Seattle were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. Sun, May 5 - Fri, May 17. DCA. Washington.1 stop. from ₹ 6,211. Washington D.C.. ₹ 8,478 per passenger.Departing Mon, 22 Apr.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Mon, 22 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From ₹ 8,478, select.All flight schedules from Ronald Reagan Washington National , District of Columbia , USA to Seattle Tacoma International , Washington , USA . This route is operated by 1 airline (s), and the flight time is 6 hours and 00 minute. The distance is 2335 miles. USA.Flight deals from Seattle to Washington Dulles. Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Washington Dulles? Find the lowest prices on one …The usual cost for a one-way flight to Baltimore/Washington Airport is around $19, while a round-trip averages at about $29. Usually, a round-trip ticket to Washington, D.C. costs in the vicinity of $1,146, but there are deals as low as $74.Are you searching for American Airlines flights from Seattle to Washington, D.C.? Find the best selections and fly in style.60,000 Bonus Miles. Online-only offer. Offers vary elsewhere. Search Alaska Airlines flight schedules & timetables. Find flight departure & arrival times for all Alaska Airlines flights. View airline flight schedules now. There are 5 airlines that fly nonstop from Seattle to Chicago. They are: Alaska Airlines, American Airlines, Delta, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $98 for a one-way flight. On average, the best prices for this route can be found at Alaska Airlines. The two airlines most popular with KAYAK users for flights from Seattle to San Jose are Alaska Airlines and Delta. With an average price for the route of $216 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $208 and an overall rating of 8.0.Fly to Seattle with United Airlines from over 200 airports within the United States and an additional 100 airports internationally. Seattle’s top attractions. Admire the vistas from atop of the famous Space Needle. Browse the local shops at Pike Place Market. Ride and enjoy the view on the Seattle Great Wheel. Cheap Flights from Seattle to Washington (SEA-WAS) Prices were available within the past 7 days and start at $80 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Seattle to Washington with no change fee on selected ... Carriers which have flown such direct red eye flights from Seattle may include: Alaska Airlines departing SEA around 9:25pm and arriving IAD around 5:30am. United Airlines departing SEA around 11:30pm and arriving IAD around 7:17am. Example departure times listed are local to origin airport time zone, and arrival times are local to destination.Cheap Flights from Seattle to Manila (SEA-MNL) Prices were available within the past 7 days and start at $487 for one-way flights and $799 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Seattle to Manila with no change fee on selected flights.My dates are flexible. SHOW FARES. Include Nearby Airports. Search for a Delta flight round-trip, multi-city or more. You choose from over 300 destinations worldwide to find a flight that fits your schedule.Each day, there are between 4 and 5 nonstop flights that take off from Seattle and land in Raleigh, with an average flight time of 5h 06m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 34 flights. The most frequent day of departure is Saturday, when 15% of all weekly flights depart.One of the most popular airlines traveling from Washington, D.C. to Seattle is Frontier. Flights from Frontier traveling this route typically cost $443.80 RT. This price is typically 32% cheaper than other airlines that offer Washington, D.C. to Seattle flights. When booking this route, the cheapest RT price found was $139.View Delta's best fares on flights from Seattle for your next getaway. Cradled by mountains and cool waters, stunning nature meets creative cityscapes in the sprawling and colorful Seattle, Washington. This gives visitors flying into Seattle-Tacoma International Airport (SEA) the best of outdoor adventure with the abounding options of a city ...That’s why Sec. Buttigieg says the Biden administration is issuing a new refund rule that will force airlines to automatically refund travelers if their flights are …1 stop. from $247. Seattle.$265 per passenger.Departing Tue, Oct 1, returning Tue, Oct 8.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Washington Dulles on Tue, Oct 1, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departing from Seattle / Tacoma International on Tue, Oct 8 ...10:50. Air Tahiti Nui / Operated by Alaska Airlines 1. (DCA to SEA) Track the current status of flights departing from (DCA) Ronald Reagan National Airport and arriving in (SEA) Seattle-Tacoma International Airport. Fall sees many cultural festivals, such as Croatia Fest, Fremont Oktoberfest and TurkFest. Winter highlights include Winterfest, Seattle Boat Show and Wintergrass Bluegrass Festival. Book cheap flights to Seattle (SEA) with United Airlines. Enjoy all the in-flight perks on your Seattle flight, including speed Wi-Fi. Delta Air Lines. Book a trip. Check in, change seats, track your bag, check flight status, and more.Best Flight Deals to Washington, D.C. with Frontier. From. flight_takeoff. To. flight_land. Budget $ From. To. From Denver, CO (DEN) To Washington, D.C. (DCA) One-way / Economy: Departing Sep 4, 2024: From. $39* Last seen: 15 hours ago *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require …Cheap Flights from Seattle (SEA) to Washington (DCA) Prices were available within the past 7 days and start at AU$146 for one-way flights and AU$423 for round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.Use Google Flights to find cheap departing flights to Cancún and to track prices for specific travel dates for your next getaway.The two airlines most popular with KAYAK users for flights from Seattle to Baltimore are Alaska Airlines and Delta. With an average price for the route of $462 and an overall rating of 8.1, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $376 and an overall rating of 8.0.Fly with Air Canada from Seattle (SEA) † Aeroplan flight bookings are currently only available on the Canadian point of sale. . Book the lowest prices on flights from Seattle (SEA) with Air Canada, one of the 20 largest airlines in the world. Enjoy convenient getaways, smooth connections and premium service. 1 stop. from $247. Seattle.$265 per passenger.Departing Tue, Oct 1, returning Tue, Oct 8.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Washington Dulles on Tue, Oct 1, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departing from Seattle / Tacoma International on Tue, Oct 8 ... Based on KAYAK searches from the last 72 hours, if you fly from Dallas, you should have a good chance of getting the best deal to Seattle as it was the cheapest place to fly from.Prices were found for as low as $48 one-way and $79 for a round-trip flight. Also in the last 72 hours, the most popular connection to Seattle was from Chicago and the … Flight to Butte, MT; Flying time from Seattle, WA to Washington, DC. The total flight duration from Seattle, WA to Washington, DC is 4 hours, 29 minutes. This is the average in-air flight time (wheels up to wheels down on the runway) based on actual flights taken over the past year, including routes like SEA to DCA. It covers the entire time on ... Find cheap flights from Seattle to Washington Dulles Airport from $101. Round-trip. 1 adult. Economy. 0 bags. Add hotel. sáb. 5/18. sáb. 5/25. Search. Direct flights only. Search …Cheap Flights from Washington to Seattle (WAS-SEA) Prices were available within the past 7 days and start at $86 for one-way flights and $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Seattle with no change fee on selected ...Flight deals from Seattle to Washington Dulles. Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Washington Dulles? Find the lowest prices on one …1 stop. from $228. Washington, D.C..$243 per passenger.Departing Tue, Jun 4, returning Tue, Jun 11.Round-trip flight with Alaska Airlines and Frontier Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Tue, Jun 4, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines ... The two airlines most popular with KAYAK users for flights from Atlanta to Washington, D.C. are Delta and United Airlines. With an average price for the route of $212 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $208 and an overall rating of 7.4. The cheapest way to get from Washington, DC to Seattle costs only $293, and the quickest way takes just 7¾ hours. Find the travel option that best suits you. ... Flights from Baltimore to Seattle via Chicago Midway Ave. Duration 8h 20m When Tuesday, Wednesday, Saturday and Sunday Estimated price $220 - $700 ...Book cheap flights to Bishop/Mammoth (BIH) with United Airlines. Enjoy all the in-flight perks on your Bishop/Mammoth flight, including speed Wi-Fi. ... From Seattle (SEA) To Bishop/Mammoth (BIH) Roundtrip | Economy: 07/09/24 - 07/12/24: from. $ …10:50. Air Tahiti Nui / Operated by Alaska Airlines 1. (DCA to SEA) Track the current status of flights departing from (DCA) Ronald Reagan National Airport and arriving in (SEA) Seattle-Tacoma International Airport.The cheapest way to get from Washington, DC to Seattle costs only $293, and the quickest way takes just 7¾ hours. Find the travel option that best suits you. ... Flights from Baltimore to Seattle via Chicago Midway Ave. Duration 8h 20m When Tuesday, Wednesday, Saturday and Sunday Estimated price $220 - $700 ...Cheap Flights from Washington to Omaha (DCA-OMA) Prices were available within the past 7 days and start at $80 for one-way flights and $114 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Omaha with no change fee on selected flights.The two airlines most popular with KAYAK users for flights from New York to Washington, D.C. are Delta and JetBlue. With an average price for the route of $248 and an overall rating of 8.0, Delta is the most popular choice. JetBlue is also a great choice for the route, with an average price of $213 and an overall rating of 7.6.18:04. Air Tahiti Nui / Operated by Alaska Airlines 406. (SEA to IAD) Track the current status of flights departing from (SEA) Seattle-Tacoma International Airport and arriving in (IAD) Washington Dulles International Airport.Find flights from Seattle, WA to Washington, DC from $121 (€105). Compare prices, find the best direct flights and book your ticket with Omio today! Tue, Jun 4 IAD – SEA with Alaska Airlines. Direct. from $275. Washington, D.C..$281 per passenger.Departing Wed, Sep 25, returning Wed, Oct 2.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Seattle / Tacoma International on Wed, Sep 25, arriving in Washington Dulles.Inbound direct flight with ... Find cheap flights from Washington, D.C. to Seattle from $81. Round-trip. 1 adult. Economy. 0 bags. Add hotel. Sat 5/18. Sat 5/25. Search. Direct flights only. Search …The best way to get from Seattle to Washington, DC is to fly which takes 7h 19m and costs $120 - $490. Alternatively, you can train, which costs $120 - $850 and takes 2 days 16h. Mode details What is the time difference between Seattle and Washington, DC? Washington, DC is 3h ahead of Seattle. ...$66 Search for cheap flights deals from DCA to SEA (Ronald Reagan Washington National to Seattle - Tacoma Intl.). We offer cheap direct, non-stop flights including one way and roundtrip tickets. ... Amazing DCA to SEA Flight Deals. The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $110 round … Use Google Flights to find cheap departing flights to Washington, D.C. and to track prices for specific travel dates for your next getaway. The two airlines most popular with KAYAK users for flights from San Antonio to Washington, D.C. are Delta and United Airlines. With an average price for the route of $327 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $383 and an overall rating of 7.4.
Flights from Washington, DC to Seattle, WA cover the 2316 miles (3736 km) long route taking on average 5 h 58 min with our travel partners like Alaska Airlines, American Airlines or United. You can get the cheapest plane tickets for this route for as low as $97 (€85), but the average price of plane tickets is $242 (€213). .... Gin rummy game
Tips to get cheap flights from Seattle to Washington Dc. Try to book your flight at least 21 days in advance in order to some flight deals which suit your budget. It is recommended to travel on weekdays to avoid weekend surcharges. Avoid flying in heavy traffic by booking your flight before or after major holidays. There are 4 airlines that fly nonstop from Seattle to New York. They are: Alaska Airlines, Delta, JetBlue and United Airlines. The cheapest price of all airlines flying this route was found with Alaska Airlines at $103 for a one-way flight. On average, the best prices for this route can be found at JetBlue. Flight status. Help. Contact American. Receipts and refunds. FAQs. Agency reference. Cargo , Opens another site in a new window that may not meet accessibility guidelines. Bag and optional fees. Customer service and contingency plans.Cheap Flights from Washington to Seattle (WAS-SEA) Prices were available within the past 7 days and start at $86 for one-way flights and $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Seattle with no change fee on selected ...$196 Cheap Alaska Airlines flights Seattle (SEA) to Washington (DCA) Prices were available within the past 7 days and start at $196 for one-way flights and for round trip, for the period specified.18:04. Air Tahiti Nui / Operated by Alaska Airlines 406. (SEA to IAD) Track the current status of flights departing from (SEA) Seattle-Tacoma International Airport and arriving in (IAD) Washington Dulles International Airport. Flights from Seattle (SEA) to Washington (IAD) Origin airport. Seattle - Tacoma Intl. Destination airport. Washington Dulles Intl. Airlines serving. Alaska Airlines, American Airlines, Delta, Sun Country Airlines, United. Popular airline. Book flights from Seattle/Tacoma Intl (SEA) to Washington, D.C. (WAS) starting at C$ 117. Search real-time flight deals from Seattle to Washington, D.C. on Cheapflights.ca.The two airlines most popular with KAYAK users for flights from Seattle to Rome are Delta and WestJet. With an average price for the route of $1,207 and an overall rating of 8.0, Delta is the most popular choice. WestJet is also a great choice for the route, with an average price of $1,304 and an overall rating of 7.5.Cheap Seattle to Delaware flights in April & May 2024. Check out some of the best flight deals from Seattle to Delaware in 2024. Check back regularly for other flight deals. vie. 5/17 10:24 pm SEA - PHL. 1 stop 28h 10m Frontier.Find the lowest prices on one-way and round-trip tickets right here. Seattle.$176 per passenger.Departing Wed, May 1, returning Fri, May 10.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Ronald Reagan on Wed, May 1, arriving in Seattle / Tacoma International.Inbound indirect ...10:50. Air Tahiti Nui / Operated by Alaska Airlines 1. (DCA to SEA) Track the current status of flights departing from (DCA) Ronald Reagan National Airport and arriving in (SEA) Seattle-Tacoma International Airport. There are 15 weekly flights from Seattle/Tacoma to Washington, D.C. (Dulles) on Southwest Airlines. What day has the lowest fares from Seattle/Tacoma to Washington, D.C. (Dulles)? To find the lowest fares by day and time to fly Seattle/Tacoma to Washington, D.C. (Dulles) with Southwest, check out our Low Fare Calendar. Cheap Flights from Seattle to Reagan Washington from $135 | (SEA - DCA) - KAYAK. SEA - DCA. Find cheap flights from Seattle to Reagan Washington National Airport from ….