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SEA - WAS

Find cheap flights from Seattle to Washington, D.C. from $56

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Washington, D.C. departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 5/23
Thu 5/30

Search hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Washington, D.C..
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Washington, D.C..
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Seattle to Washington, D.C. (SEA-WAS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:35 pm - 3:16 pmSEA-BWI
14h 41m2 stops
6:46 pm - 7:04 amBWI-SEA
15h 18m1 stop
$155Frontier
Find Deal
Tue, May 14 - Sat, May 18
5:02 pm - 12:00 pmSEA-DCA
15h 58m1 stop
12:55 pm - 7:04 amDCA-SEA
21h 09m1 stop
$159Frontier
Find Deal
Mon, May 13 - Sat, May 18
7:15 pm - 6:05 amSEA-BWI
7h 50m1 stop
4:36 pm - 10:09 pmBWI-SEA
8h 33m1 stop
$250Delta
Find Deal
Tue, Aug 13 - Wed, Aug 21
7:15 pm - 5:58 amSEA-BWI
7h 43m1 stop
6:15 pm - 11:36 pmBWI-SEA
8h 21m1 stop
$274Delta
Find Deal
Wed, Sep 18 - Fri, Sep 27
7:15 am - 9:02 pmSEA-IAD
10h 47m1 stop
5:23 pm - 8:10 pmIAD-SEA
5h 47mnonstop
$282United Airlines
Find Deal
Tue, May 21 - Tue, May 28
4:00 pm - 11:59 pmSEA-IAD
4h 59mnonstop
7:00 am - 9:30 amIAD-SEA
5h 30mnonstop
$283Alaska Airlines
Find Deal
Tue, May 28 - Sat, Jun 1
6:00 am - 5:50 pmSEA-BWI
8h 50m1 stop
6:58 am - 11:45 amBWI-SEA
7h 47m1 stop
$285American Airlines
Find Deal
Thu, Sep 19 - Thu, Sep 26
7:10 pm - 5:19 amSEA-IAD
7h 09m1 stop
10:15 pm - 12:59 amIAD-SEA
5h 44mnonstop
$286United Airlines
Find Deal
Wed, May 22 - Wed, May 29
11:28 pm - 7:40 amSEA-IAD
5h 12mnonstop
7:00 am - 9:30 amIAD-SEA
5h 30mnonstop
$294Alaska Airlines
Find Deal
Mon, May 20 - Wed, May 29
10:32 pm - 8:36 amSEA-IAD
7h 04m1 stop
5:31 pm - 10:50 pmIAD-SEA
8h 19m1 stop
$300American Airlines
Find Deal
Wed, Aug 28 - Wed, Sep 4

Flights from Seattle to Washington, D.C. - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Seattle to Washington, D.C. flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from Seattle to Washington, D.C..
Our data shows that the cheapest route for a one-way flight from Seattle to Washington, D.C. cost $128 and was between Seattle and Washington, D.C. Dulles Intl Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $163.

What’s the cheapest day of the week to fly from Seattle to Washington, D.C.?

The average price of all flights from Seattle to Washington, D.C. clicked on KAYAK for each day over the last 12 months.
When flying from Seattle to Washington, D.C., you should consider leaving on a Thursday and avoid Mondays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Seattle to Washington, D.C.?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Washington, D.C. is January, where tickets cost $261 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $538 and $488 respectively.

How far in advance should I book a flight from Seattle to Washington, D.C.?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Washington, D.C., you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Which airlines provide the cheapest flights from Seattle to Washington, D.C.?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Seattle to Washington, D.C. were found on Frontier ($155) and Spirit Airlines ($227). Frontier proposed the cheapest one-way flight at $56.

Which airlines fly most frequently between Seattle and Washington, D.C.?

In normal times, Alaska Airlines flies from Seattle to Washington, D.C. up to 11 times per day, United Airlines up to 3 times per day, and Delta up to 2 times per day.

Which airlines fly non-stop between Seattle and Washington, D.C.?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to Washington, D.C..
There are 3 airlines that fly nonstop from Seattle to Washington, D.C.. They are: Alaska Airlines, Delta and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $128 for a one-way flight. On average, the best prices for this route can be found at United Airlines.

How many flights are there between Seattle and Washington, D.C. per day?

Each day, there are between 13 and 21 nonstop flights that take off from Seattle and land in Washington, D.C., with an average flight time of 5h 06m. The most common departure time is 8:00 am and most flights take off in the morning, while the most flights land at Washington, D.C. Dulles Intl Airport. Each week, there are 119 flights. The most frequent day of departure is Friday, when 18% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Seattle and Washington, D.C.?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Seattle to Washington, D.C. take?

Direct flights take on average 4h 49m to travel the 2,319 miles between Seattle and Washington, D.C..

What’s the earliest departure time from Seattle to Washington, D.C.?

Early birds can take the earliest flight from Seattle at 7:35 am and will be landing in Washington, D.C. at 3:40 pm.

What’s the latest departure time from Seattle to Washington, D.C.?

If you prefer to fly at night, the latest flight from Seattle to Washington, D.C. jets off at 11:29 pm and lands at 7:28 am.

Good to know

Low season

January

High season

April

Cheapest flight

$56
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Seattle to Reagan Washington National Airport

When to book flights from Seattle to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Seattle to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Washington, D.C.

  • Does IAD have an on-site hotel?

    IAD has one on-site hotel. Referred to as Sleepbox Lounge, this hotel is between Gates A6 and A14, near the AeroTrain in Concourse A. You'll have a good rest at this hotel, as it features comfortable rooms.

  • Is there an on-site restaurant at DCA?

    If you're hungry, you can order food before exiting DCA, as this airport is full of restaurants. Some notable restaurants at this airport include Matsutake Sushi, American Tap Room, District Bar, Custom Burger, Cava Mezze Grill, and Grille District. If you just want snacks, you can visit the retail stores located throughout the airport.

  • Can I rent a car at BWI?

    If you want to rent a car once you disembark from your flight at BWI, you'll be able to do so. This is because BWI is connected to an off-site car rental facility that houses branches for reliable car rental agencies like Budget, Hertz, National, Alamo, Avis, Thrifty, and Enterprise. To board the shuttle, you'll use to travel to the airport's car rental facility, and head to the lower level of BWI's main terminal.

  • Does SEA have a children's play area?

    SEA has a children's play area. Located between the Central Terminal and Gates A, across from Seattle Taproom, this children's play area features several toys and soft playgrounds. Daily, it operates round-the-clock.

  • What is the cheapest flight from Seattle to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from Seattle to Washington, D.C. was $56 for a one-way ticket and $155 for a round-trip.

  • Do I need a passport to fly between Seattle and Washington, D.C.?

    A passport is not required to fly from Seattle to Washington, D.C..

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Washington, D.C.?

    Alaska Airlines, American Airlines, JetBlue, and Delta offer inflight Wi-Fi service on the Seattle to Washington, D.C. flight route.

  • Which aircraft models fly most regularly from Seattle to Washington, D.C.?

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Seattle to Washington, D.C. flight route.

  • Which airline alliances offer flights from Seattle to Washington, D.C.?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Washington, D.C., with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Washington, D.C.?

    There are nonstop flights from Seattle to Washington, D.C. on a daily basis.

  • Which is the best airline for flights from Seattle to Washington, D.C., Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to Washington, D.C. are Alaska Airlines and Delta. With an average price for the route of $438 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 $378 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Seattle to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Seattle to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $200 or less one-way and $381 or less round-trip.
  • To travel from Seattle's city center to Seattle-Tacoma International Airport (SEA), you can board a King County Metro bus, a private taxi, or a LINK Light Rail train. You should board a taxi if you're in a rush, a metro bus if you'd like to travel cheaply, and a train if you want to balance speed and cost.
  • In case you need help at SEA, you'll be able to easily get it, as this airport features several staff members mandated with the responsibility of assisting passengers at the airport. Given that they all wear distinct blue vests, you'll be able to spot one without hassle.
  • If you've got time to spare, while waiting for your flight to Washington at SEA, you can enjoy relaxing spa services at the outstanding Terminal Gateway Spa. This spa, situated a short distance from gate A5, is normally open from 7 am to 10 pm. It features adequately experienced professionals, state-of-the-art spa equipment, and high-quality spa oils.
  • In Washington, you can land at Baltimore/Washington International Thurgood Marshall Airport (BWI), Dulles International Airport (IAD), or Ronald Reagan Washington National Airport (DCA). When booking your flight to Washington, you should book one that lands at DCA. This is because, among the three Washington airports, it is the closest to Washington's city center. Given that it also has the least passenger traffic, you won't encounter massive queues at DCA.
  • If you've traveled to Washington with your pet, you can let it relieve itself in one of DCA's designated pet relief areas once you land at the airport. These pet relief areas are opposite Doors 1 and 5 in Terminal A, opposite the South Metrorail station entrance in Terminal B, and across from the North Metrorail Station Entrance in Terminal C.
See more tips

Prefer to fly non-stop from Seattle to Washington, D.C.?

Find which airlines fly direct from Seattle/Tacoma Intl to Washington, D.C., which days they fly and book direct flights.

Nonstop departures

Seattle/Tacoma Intl to Washington, D.C.

Monday

ANA, Air Tahiti Nui, Alaska Airlines, +14 more

ANA, Air Tahiti Nui, +15 more

Tuesday

ANA, Air Tahiti Nui, Alaska Airlines, +16 more

ANA, Air Tahiti Nui, +17 more

Wednesday

ANA, Air Tahiti Nui, Alaska Airlines, +14 more

ANA, Air Tahiti Nui, +15 more

Thursday

ANA, Air Tahiti Nui, Alaska Airlines, +16 more

ANA, Air Tahiti Nui, +17 more

Friday

ANA, Air Tahiti Nui, Alaska Airlines, +15 more

ANA, Air Tahiti Nui, +16 more

Saturday

ANA, Air Tahiti Nui, Alaska Airlines, +16 more

ANA, Air Tahiti Nui, +17 more

Sunday

ANA, Air Tahiti Nui, Alaska Airlines, +15 more

ANA, Air Tahiti Nui, +16 more

See more direct flights

Nonstop returns

Washington, D.C. to Seattle/Tacoma Intl

Monday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +12 more

Air Tahiti Nui, Alaska Airlines, +13 more

Tuesday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +13 more

Air Tahiti Nui, Alaska Airlines, +14 more

Wednesday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +12 more

Air Tahiti Nui, Alaska Airlines, +13 more

Thursday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +13 more

Air Tahiti Nui, Alaska Airlines, +14 more

Friday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +12 more

Air Tahiti Nui, Alaska Airlines, +13 more

Saturday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +13 more

Air Tahiti Nui, Alaska Airlines, +14 more

Sunday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +12 more

Air Tahiti Nui, Alaska Airlines, +13 more

See more direct flights
See more direct flights

Top 5 airlines serving from Seattle to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9102 reviews
8.6crew
8.2boarding
7.9comfort
7.3food
7.3entertainment
Airline reviews

Flight was good. Glad it was delayed or I may have missed the connection since I got to Seattle at about the same time my connection was to leave. The snack was a small bag of pretzels and a small soda. Can’t really call that food. There was no entertainment available on the flight.

8.0 ExcellentAnonymous, Apr 2024SEA - TUS
Read more about Alaska Airlines reviews

Flight was good. Glad it was delayed or I may have missed the connection since I got to Seattle at about the same time my connection was to leave. The snack was a small bag of pretzels and a small soda. Can’t really call that food. There was no entertainment available on the flight.

Same as the earlier flight. Bad boarding practices, uncomfortable seats, and no Wi-Fi service.

Everything was good. One of the flight attendants was not very friendly

Text and wifi were paywalled. I'm not looking for something fast, but not getting a text for ride coordination until back at the gate was a pain.

It was not a great flight. There was a software update delay which had us on the ground for almost 2 hours. I was unable to make my shuttle to my final destination.

Good. Quiet. Comfortable. The protests nearly kept me from catching my flight. They waited for me! I made it!

Red eye flight, so not expecting any extras, but the boarding and trip was smooth. Thx Alaska.

Received little assistance with air sick child. Crew’s main concern was if anything got on the seat belt!

Flight was excellent! Comfortable seats. Flew out of IND. very friendly crew!

It was fine… Just overbooked every seat was taken and very bumpy nothing they could do about that. Overall I like to fly Alaska airlines

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

Crowded flight, but upbeat and kind crew. Pilot greeted us at door, flight attendant thanked a number of “special” passengers for their business, another addressed an eight-year old boy as “young man.” United obviously trying to up their game, but though all of that is nice and notable, flying still feels like moving along a human assembly line, being herded into one small space after another (boarding areas with too few seats, planes with limited personal space, shuttles (IAD) packed too full.

It was ok until we got to DC and I wanted to use my United Club pass and the snobbish receptionist said that they don’t take one pass. It took me everything itch of patience not to tell her off

Food choice was poor and we had to buy on board snacks.

The weather caused a delayed but I was impressed how United did everything they could to try to get us out which included bussing us to the plane doing a Hardstand and bringing us to the plane since the fog was too thick to tow the plane from the overnight stay in the cargo area.

We were offer chocolate cookies , not everyone eat chocolate. Thank you

Food was really good. Chicken curry delicious. Great service. Had 3 seats, what a pleasure. What about a healthier desert option on the dinner? Yogurt, fruit? Thankyou

A lot of room for improvement; delayed boarding and take off, room in a seat…horrible. I was seated by a larger person and had no room to rest my elbows, not to mention her body was partially sitting on my seat. The food was quite poor this time as well. Bathrooms half way down the flight- disgusting….

Lost luggage again. Our second trip to Mykonos, and 2nd time no luggage.

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

The flight was great until towards the end when the flight attendant read an excessively long commercial for purchasing an american airlines credit card. The worst part is that we are doing a lot of traveling this year so i was actually interested in getting the credit card, but I was so annoyed with the long commercial that I completely dismissed the flight attendant bringing around the information. Next time, keep the sales pitch to 10 seconds and then pass around the brochures!!

Nice aircraft. Plane was PACKED full and distance between seats was tight. Had it been more than a two hour flight it would not have been tolerable. I had much more knee space on the JetBlue flight I went out on.

New ridiculous policy by american destroyed my allegiance to american. As a million miler with american, I expected it would be easy to get on an earlier flight when I got to airport earlier than expected, and save a five hour layover. WRONG. The online app would not let me switch flights, So I called, and was promised a call back in 90 minutes. HAH! The customer service desk at DCA said “we no longer have access to changing a flight on our screens. If the app couldn’t do it, I should send a letter to American, but there’s nothing else possible!”

I am tired of being nickel and dimed for seat location, checked luggage and carry on bags. That is why i rarely fly anymore.

I had the exit seat with all the leg room I could ask for. Great!

I wish there were no credit card announcements. I paid hundreds of dollars, I don't need to pay again by sitting through advertisements.

It was right on time and crew were very courteous

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Terrible. Seats are bad and the baggage policy is inconsistent

Flight delayed 3 times, resulting in late arrival, rental car place gave car away resulting in increased BS charges because I was late. Frontier blows.

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

Book cheap flights from Seattle to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Washington, D.C. found on KAYAK in the last 72 hours.
5/22Wed
1 stopFrontier
10h 55mSEA-DCA
$56
5/23Thu
1 stopFrontier
21h 10mSEA-DCA
$57
5/18Sat
1 stopAmerican Airlines
8h 50mSEA-BWI
$124
5/18Sat
1 stopDelta
8h 43mSEA-BWI
$125
5/21Tue
nonstopDelta
5h 09mSEA-IAD
$139
5/17Fri
1 stopAmerican Airlines
10h 32mSEA-BWI
$141
5/21Tue
1 stopUnited Airlines
10h 47mSEA-IAD
$144
6/11Tue
1 stopUnited Airlines
7h 59mSEA-DCA
$148
5/14Tue
nonstopAlaska Airlines
5h 05mSEA-BWI
$149
5/18Sat
nonstopAlaska Airlines
5h 00mSEA-BWI
$159

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Last minute flights from Seattle to Washington, D.C.

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Washington, D.C. that are departing in the next 10 days.
4/28Sun
multi-stopFrontier
10h 30mSEA-DCA
4/30Tue
multi-stopFrontier
10h 45mDCA-SEA
$244
4/27Sat
multi-stopFrontier
11h 28mSEA-DCA
5/4Sat
multi-stopFrontier
9h 55mDCA-SEA
$246
4/28Sun
multi-stopAmerican Airlines
7h 51mSEA-BWI
4/30Tue
multi-stopAmerican Airlines
8h 13mBWI-SEA
$299
4/28Sun
multi-stopAmerican Airlines
7h 51mSEA-BWI
5/2Thu
multi-stopAmerican Airlines
7h 46mBWI-SEA
$300
4/27Sat
multi-stopDelta
9h 09mSEA-BWI
5/4Sat
multi-stopDelta
7h 45mBWI-SEA
$314
4/24Wed
multi-stopDelta
8h 15mSEA-BWI
4/26Fri
multi-stopDelta
7h 45mBWI-SEA
$326
4/27Sat
multi-stopUnited Airlines
6h 50mSEA-BWI
5/4Sat
multi-stopUnited Airlines
12h 11mBWI-SEA
$419
4/27Sat
multi-stopUnited Airlines
9h 49mSEA-BWI
4/30Tue
multi-stopUnited Airlines
10h 33mBWI-SEA
$424
4/26Fri
nonstopAlaska Airlines
5h 05mSEA-IAD
6/8Sat
nonstopAlaska Airlines
5h 30mIAD-SEA
$513
4/26Fri
multi-stopAlaska Airlines
8h 10mSEA-IAD
6/8Sat
nonstopAlaska Airlines
5h 30mIAD-SEA
$522

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Seattle - Washington, D.C. Flights

Departure:

Seattle (SEA)United States

Return flight deals:

Washington, D.C. - Seattle

Cabin classes:

$572
$704
$522
$163