Title: CA $108 Cheap Flights from Seattle (SEA) to Washington (DCA) - Expedia.ca ![Washington DC in Spring](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $108 Cheap Flights from Seattle (SEA) to Washington (DCA) [View CA $108 flight on Sat, May 2, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:SEA,to:DCA,departure:02/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:107.20&airProductToken=AQo1CjMIxJgBEgM3ODYYkgEgQyjm9IsDMI_3iwM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWV0gzQkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ## Popular airlines from Seattle-Tacoma International Airport (SEA) to Ronald Reagan National Airport (DCA) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:DCA,departure:16/03/2026TANYT&leg2=from:DCA,to:SEA,departure:23/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:DCA,departure:16/03/2026TANYT&leg2=from:DCA,to:SEA,departure:23/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:DCA,departure:16/03/2026TANYT&leg2=from:DCA,to:SEA,departure:23/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:DCA,departure:16/03/2026TANYT&leg2=from:DCA,to:SEA,departure:23/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:DCA,departure:16/03/2026TANYT&leg2=from:DCA,to:SEA,departure:23/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:DCA,departure:16/03/2026TANYT&leg2=from:DCA,to:SEA,departure:23/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:DCA,departure:16/03/2026TANYT&leg2=from:DCA,to:SEA,departure:23/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Seattle (SEA) to Washington (DCA) Prices were available within the past 7 days and start at CA $108 for one-way flights and CA $270 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Apr 22 - Sat, Apr 25 SEA Seattle DCA Washington CA $270 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:22/04/2026TANYT&leg2=from:DCA,to:SEA,departure:25/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:269.20&airProductToken=AQo1CjMIxJgBEgM3ODYYkgEgQyimhIsDMM-GiwM4RUAAWAFqCU1BSU5CQVNJQ3IIVkZWU0EwQkQKNQozCMSYARIDNzMwGEMgkgEo96iLAzDWq4sDOEVAAFgBaglNQUlOQkFTSUNyCFZGVlNBMEJEEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Apr 22 - Sat, May 2 SEA Seattle DCA Washington CA $271 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:22/04/2026TANYT&leg2=from:DCA,to:SEA,departure:02/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:270.30&airProductToken=AQogCh4IxJgBEgM3ODYYkgEgQyimhIsDMM-GiwM4RUAAWAEKIAoeCMSYARIDNzMwGEMgkgEo1_eLAzC2-osDOEVAAFgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Apr 15 - Sat, May 2 SEA Seattle DCA Washington CA $283 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:15/04/2026TANYT&leg2=from:DCA,to:SEA,departure:02/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:282.70&airProductToken=AQpECiAIxJgBEgM4MTAYkgEg47QBKPa8igMw9r6KAzhFQABYAQogCMSYARIEMTU1OBjjtAEgQyiZv4oDMPW_igM4RUABWAEKIAoeCMSYARIDNzMwGEMgkgEo1_eLAzC2-osDOEVAAFgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Apr 25 - Wed, Apr 29 SEA Seattle DCA Washington CA $288 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:25/04/2026TANYT&leg2=from:DCA,to:SEA,departure:29/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:287.03&airProductToken=AQo1CjMIxJgBEgM3ODYYkgEgQyiGposDMK-oiwM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWU0EwQkQSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Apr 25 - Wed, Apr 29 SEA Seattle DCA Washington CA $289 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:25/04/2026TANYT&leg2=from:DCA,to:SEA,departure:29/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:288.04&airProductToken=AQpnCjIIwYIBEgQyNzQ4GJIBIKOxASispYsDMKGniwM4QkAAWAFqBUJBU0lDcghPVkFIWlNCVgoxCMGCARIEMTYyORijsQEgQyiEqYsDML2qiwM4QkABWAFqBUJBU0lDcghPVkFIWlNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Apr 28 - Thu, May 7 SEA Seattle DCA Washington CA $296 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:28/04/2026TANYT&leg2=from:DCA,to:SEA,departure:07/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:295.10&airProductToken=AQpACh8IwaYBEgMzMzgYkgEgkmgox8iLAzD4yYsDOFhAAFgBCh0IwaYBEgIxNBiSaCBDKKLKiwMw3MyLAzhYQAFYAQoeChwIwaYBEgExGEMgkgEo8KuMAzDVrowDOFhAAFgBEgoIARABGAEqAkFTGAEiBAgBEAEoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Apr 28 - Wed, May 6 SEA Seattle DCA Washington CA $307 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:28/04/2026TANYT&leg2=from:DCA,to:SEA,departure:06/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:306.81&airProductToken=AQpACh8IwaYBEgMzMzgYkgEgkmgox8iLAzD4yYsDOFhAAFgBCh0IwaYBEgIxNBiSaCBDKKLKiwMw3MyLAzhYQAFYAQpACh0IwaYBEgIxNRhDIJJoKIuhjAMw4aOMAzhYQABYAQofCMGmARIDNjg1GJJoIJIBKLCkjAMw7qWMAzhYQAFYARIKCAEQARgBKgJBUxgBIgQIARABKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Apr 16 - Tue, Apr 28 SEA Seattle DCA Washington CA $312 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:16/04/2026TANYT&leg2=from:DCA,to:SEA,departure:28/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:311.80&airProductToken=AQpECiAIxJgBEgM1MzMYkgEg47QBKMjDigMwzcWKAzhFQABYAQogCMSYARIEMjA3MxjjtAEgQyjyxYoDMMrGigM4RUABWAEKIAoeCMSYARIDNzMwGEMgkgEo18qLAzC2zYsDOEVAAFgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Thu, Mar 26 - Wed, Apr 8 SEA Seattle DCA Washington CA $340 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:26/03/2026TANYT&leg2=from:DCA,to:SEA,departure:08/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:339.10&airProductToken=AQohCh8IyIIBEgQ2NzAyGJIBIEMoxdeIAzD32YgDOFVAAFgBCiEKHwjIggESBDY3MDEYQyCSASjQ5YkDML3oiQM4VUAAWAESCggBEAEYASoCSEEYASIECAEQASgEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Mar 30 - Sat, Apr 4 SEA Seattle DCA Washington CA $450 Roundtrip found 11 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:DCA,departure:30/03/2026TANYT&leg2=from:DCA,to:SEA,departure:04/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:449.90&airProductToken=AQpjCjAI1YIBEgM3NDcYkgEgrhwoo4mJAzCTi4kDOEtAAFgBagUyX2Vjb3IIS0ZBMkFYRFMKLwjVggESAzMwNxiuHCBDKMiMiQMwv42JAzhLQABYAWoFMl9lY29yCEtGQTJBWERTCmcKMQjVggESBDQxODAYQyDEjQEoqL2JAzCAvokDOEtAAFgBagUyX2Vjb3IIS0ZBMkFYRFMKMgjVggESBDIwNDQYxI0BIJIBKM--iQMww8GJAzhLQABYAWoFMl9lY29yCEtGQTJBWERTEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.ca/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near Washington Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:BWI,departure:16/03/2026TANYT&leg2=from:BWI,to:SEA,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) BWI Baltimore Washington Intl. Thurgood Marshall Cheapest 40 min [Flights from CA $382 ](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:BWI,departure:16/03/2026TANYT&leg2=from:BWI,to:SEA,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:IAD,departure:16/03/2026TANYT&leg2=from:IAD,to:SEA,departure:21/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) IAD Washington Dulles Intl. 36 min [Flights from CA $394 ](https://www.expedia.ca/Flights-Search?leg1=from:SEA,to:IAD,departure:16/03/2026TANYT&leg2=from:IAD,to:SEA,departure:21/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from Seattle (SEA) to Washington (DCA) ### April is typically the cheapest month to fly From CA $226 - CA $624 per traveller. ## Frequently asked questions ### How much is a flight from Sea-Tac Airport to National Airport? ### Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to National Airport? ### How do I find cheap flights from Sea-Tac Airport to Ronald Reagan Washington National Airport (DCA) that have flexible change policies? ### How many hours is the flight from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)? ### How far is the flight from SEA to Ronald Reagan Washington National Airport (DCA)? ### Which airlines fly direct from SEA to Ronald Reagan Washington National Airport (DCA)? ### Are SEA to Ronald Reagan Washington National Airport (DCA) flight tickets cheaper when they're purchased at the last minute? ## Travel information | Origin airport | Seattle - Tacoma Intl. | | ------------------- | ------------------------------------------------------------------ | | Destination airport | Ronald Reagan Washington National | | Airlines serving | Alaska Airlines, American Airlines, Delta, JetBlue Airways, United | | Roundtrip price | CA $269 | | Distance | 3715 km | | Average flight time | 8 hours 1 min | ## Book with confidence # Seattle to Washington Flights **The easy way to book your flights from Seattle to Washington** With Expedia, it’s simple to find and book flights to Washington from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Ronald Reagan Washington National, too. Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Washington today, tomorrow, or this week. **Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Ronald Reagan Washington National, DCA** Sort your search results by price to find great deals on your flight from Seattle to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from Seattle currently is just CA $270 rising to CA $450\. Here are more money-saving tips: - Fly in April when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to Washington - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! **Reasons to choose Expedia for your flight to Washington from Seattle** Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Washington with Expedia today. ## Explore a world of travel with Expedia - Flights - [Flights from Waukesha to Arlington ](https://www.expedia.ca/lp/flights/10170/6236/waukesha-to-arlington) - [Flights from Kitchener to Arlington ](https://www.expedia.ca/lp/flights/10579/6236/kitchener-to-arlington) - [Flights from El Paso to Arlington ](https://www.expedia.ca/lp/flights/1129/6236/el-paso-to-arlington) - [Flights from Sveg to Arlington ](https://www.expedia.ca/lp/flights/1177/6236/sveg-to-arlington) - [Flights from Formosa to Arlington ](https://www.expedia.ca/lp/flights/1226/6236/formosa-to-arlington) - [Flights from Friday Harbor to Arlington ](https://www.expedia.ca/lp/flights/1248/6236/friday-harbor-to-arlington) - [Flights from Gisborne to Arlington ](https://www.expedia.ca/lp/flights/1327/6236/gisborne-to-arlington) - [Flights from Galveston to Arlington ](https://www.expedia.ca/lp/flights/1341/6236/galveston-to-arlington) - [Flights from SeaTac to Arlington ](https://www.expedia.ca/lp/flights/156205/6236/seatac-to-arlington) - 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[Flights from Burlington (BTV) to Washington (IAD) ](https://www.expedia.ca/lp/flights/btv/iad/burlington-to-washington) - [Flights from Lahore (LHE) to Washington (IAD) ](https://www.expedia.ca/lp/flights/lhe/iad/lahore-to-washington) - [Flights from Sudbury (YSB) to Washington (IAD) ](https://www.expedia.ca/lp/flights/ysb/iad/sudbury-to-washington) \*Available to Expedia members.