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SEA - IAD

$112 Find Cheap Flights from Seattle to Washington Dulles Airport

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 Dulles Intl departing on 11/16. 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

Search hundreds of travel sites at once for deals on flights to Washington Dulles Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 45,479,411 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.

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World’s Best Airfare Search Site for 2024

Cheap Flight Deals from Seattle to Washington Dulles Airport (SEA-IAD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Washington Dulles Airport 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
5:30 am - 4:17 pmSEA-IAD
7h 47m1 stop
6:16 am - 1:10 pmIAD-SEA
9h 54m1 stop
$230American Airlines
Find Deal
Tue, Oct 29 - Tue, Nov 5
5:30 am - 4:26 pmSEA-IAD
7h 56m1 stop
6:16 am - 1:10 pmIAD-SEA
9h 54m1 stop
$234American Airlines
Find Deal
Thu, Oct 31 - Tue, Nov 5
4:12 pm - 11:59 pmSEA-IAD
4h 47mnonstop
8:20 am - 11:10 amIAD-SEA
5h 50mnonstop
$236Alaska Airlines
Find Deal
Tue, Nov 12 - Wed, Nov 20
9:55 pm - 5:53 amSEA-IAD
4h 58mnonstop
7:15 am - 10:28 amIAD-SEA
6h 13mnonstop
$237Delta
Find Deal
Wed, Oct 23 - Sat, Nov 16
8:55 am - 5:00 pmSEA-IAD
5h 05mnonstop
5:55 pm - 8:54 pmIAD-SEA
5h 59mnonstop
$238Delta
Find Deal
Thu, Oct 31 - Wed, Nov 6
4:11 pm - 11:59 pmSEA-IAD
4h 48mnonstop
8:20 am - 11:10 amIAD-SEA
5h 50mnonstop
$242Alaska Airlines
Find Deal
Fri, Oct 25 - Wed, Nov 13
8:05 am - 4:10 pmSEA-IAD
5h 05mnonstop
1:00 pm - 7:20 pmIAD-SEA
9h 20m1 stop
$247United Airlines
Find Deal
Sat, Oct 26 - Tue, Oct 29
12:50 pm - 8:55 pmSEA-IAD
5h 05mnonstop
5:20 pm - 11:11 pmIAD-SEA
8h 51m1 stop
$252United Airlines
Find Deal
Fri, Oct 25 - Wed, Oct 30
6:30 pm - 11:56 amSEA-IAD
14h 26m1 stop
11:45 am - 4:42 pmIAD-SEA
7h 57m1 stop
$358Sun Country Air
Find Deal
Thu, Oct 24 - Mon, Oct 28
6:30 pm - 11:56 amSEA-IAD
14h 26m1 stop
11:45 am - 5:16 pmIAD-SEA
8h 31m1 stop
$378Sun Country Air
Find Deal
Thu, Oct 24 - Sun, Oct 27

Flights from Seattle to Dulles Intl - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Seattle to Washington Dulles Airport?

The average price of all flights from Seattle to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.
When flying from Seattle to Washington Dulles Airport, you should consider leaving on a Wednesday and avoid Sundays 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. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Washington, D.C. Dulles Intl Airport, 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. Dulles Intl Airport is January, where tickets cost $293 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $486 and $463 respectively.

Can I save money by flying with a layover from Seattle to Washington, D.C. Dulles Intl Airport?

The average price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $623 on average

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

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. Dulles Intl Airport, 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. Dulles Intl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 173 days before departure.

Good to know

Low season

February

High season

May

Cheapest flight

$112
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Seattle to Washington Dulles Airport

When to book flights from Seattle to Dulles Intl

Are your dates flexible? Find out the best times to travel from Seattle to Dulles Intl 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 Seattle to Washington Dulles Airport flights

  • Is there a lounge at Seattle-Tacoma International Airport?

    If you want a quiet place where you can relax while you wait for your flight from Seattle to Washington, DC, you can head to the Club at SEA. There are two locations in Concourse A. The one by Gate A12 is open from around 5 am to midnight. The second is above Gate S10 on the mezzanine floor and is open from about 6 am to 7 pm. For about $45, you can enjoy snacks and beverages, including bar service, as well as television and magazines.

  • Will there be inflight entertainment on my trip from Seattle to Washington?

    Many airlines offering flights to Washington Dulles Airport from Seattle provide inflight entertainment. You can check which ones do by expanding the aircraft details in your KAYAK search results. For example, United Airlines has both personal seatback systems as well as streaming options for passengers to enjoy movies, music, and shows.

  • Are there pet relief areas at the airports in Seattle and Washington, DC?

    If you are traveling with your pet or service animal, both airports have pet relief stations with waste disposal bags and trash receptacles. In SEA, there are several pet relief areas throughout the airport, including in the main terminal and in Concourses D, S, and N. In IAD, you can find them by Gates D1 and A32, as well as by the parking lot across from the exit by Baggage Claim 1.

  • Can I rent a car at IAD?

    Many of the major car rental companies offer services at IAD, including Avis, Enterprise, and SIXT. You can catch a shuttle to locations outside Doors 2 and 4 from baggage claim at Curbs 2C or 2D.

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

    In the last 3 days, the lowest price for a flight from Seattle to Washington, D.C. Dulles Intl Airport was $112 for a one-way ticket and $230 for a round-trip.

  • Do I need a passport to fly between Seattle and Washington Dulles Airport?

    No

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Washington Dulles Airport?

    Alaska Airlines, Delta, JetBlue, Lufthansa, and United Airlines offer inflight Wi-Fi service on the Seattle to Washington Dulles Airport flight route.

  • Which aircraft models fly most regularly from Seattle to Washington Dulles Airport?

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

  • Which airline alliances offer flights from Seattle to Washington Dulles Airport?

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

  • On which days can I fly direct from Seattle to Washington Dulles Airport?

    There are nonstop flights from Seattle to Washington Dulles Airport 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 $422 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 $398 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Seattle to Washington Dulles Airport?

    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 Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport 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 Dulles Airport?

    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 Dulles Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and IAD can sometimes prove cheaper using this method.

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

    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 Dulles Airport from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $188 or less one-way and $333 or less round-trip.
  • Seattle-Tacoma International Airport (SEA), also called Sea-Tac, is the main airport for the greater Seattle metropolis. It is about 14 miles from downtown Seattle, and Alaska and Delta Airlines use it as a hub. Washington Dulles International Airport (IAD) is the main airport for the Washington DC area, where it is a United Airlines hub, and is located about 42 miles from downtown DC.
  • You could take one of the many non-stop flights from Seattle to Washington Dulles Airport, or you may prefer a flight with one or more stops. For example, Delta flies to IAD with stops in Detroit or New York City, and American Airlines can take you to DC via Chicago and Charlotte.
  • Flights from Washington Dulles Airport to Seattle average about 2,087 lbs. in CO2 emissions per passenger. If you would like to keep that number as low as possible, you could fly Alaska Air’s non-stop service, which ranges from only around 1,216 to 1,461 lbs. in emissions, about 42% to 30% less than the average.
  • You have two public transport options from downtown Seattle to the airport. The Link Light Rail costs about $3 a person, and you can get tickets at the station. The King County Metro Bus also has numerous routes from the city center to the airport for around $3 as well. You can pay the driver in cash, but you need exact change.
  • If you choose to drive and park your car at SEA, there are long-term parking lots at the airport. At the Terminal Direct parking on the 4th floor of the garage, you can walk to the main terminal from this floor for about $42 a day or around $294 a week. You can park on the other floors for around $34 a day or $169 per week.
See more tips

Prefer to fly non-stop from Seattle to Washington Dulles Airport?

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

Nonstop departures

Seattle/Tacoma Intl to Washington, D.C. Dulles Intl

Monday

Air Tahiti Nui, Alaska Airlines, Avianca, +10 more

Air Tahiti Nui, Alaska Airlines, +11 more

Tuesday

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

Air Tahiti Nui, Alaska Airlines, +13 more

Wednesday

Air Tahiti Nui, Alaska Airlines, Avianca, +10 more

Air Tahiti Nui, Alaska Airlines, +11 more

Thursday

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

Air Tahiti Nui, Alaska Airlines, +13 more

Friday

Air Tahiti Nui, Alaska Airlines, Austrian Airlines, +11 more

Air Tahiti Nui, Alaska Airlines, +12 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

Nonstop returns

Washington, D.C. Dulles Intl to Seattle/Tacoma Intl

Monday

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

Air Tahiti Nui, Alaska Airlines, +13 more

Tuesday

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

Air Tahiti Nui, Alaska Airlines, +13 more

Wednesday

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

Air Tahiti Nui, Alaska Airlines, +13 more

Thursday

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

Air Tahiti Nui, Alaska Airlines, +13 more

Friday

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

Air Tahiti Nui, Alaska Airlines, +14 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 Dulles Intl

 
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 Dulles Intl? 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 9378 reviews
8.2Boarding
8.5Crew
7.9Comfort
7.1Entertainment
7.2Food
Airline reviews

We purchased tickets and were last to board while standby passengers were boarding before us. The WiFi wasn't working and the same thing happened on our last Alaska flight. The snack provided was vegan I wasn't going to chance eating that on a 6 hour flight incase it didn't agree with me.

6.0 GoodAnonymous, Sep 2024SEA - HNL
Read more Alaska Airlines reviews

We purchased tickets and were last to board while standby passengers were boarding before us. The WiFi wasn't working and the same thing happened on our last Alaska flight. The snack provided was vegan I wasn't going to chance eating that on a 6 hour flight incase it didn't agree with me.

Larger seats, more legroom, better food, backseat screens to watch movies

Flight was a bit turbulent, and there was a delay. Everything else was fine!

Good conversation with crew while I need assistance because I'm deaf. Thank you

This flight had mechanical issues. I changed flights, which Alaska Customer Service handled beautifully. Then that flight was an hour late. I was originally supposed to land in San Diego at 730pm and I landed at midnight,

I had signed up for Alaska text alerts but gate was changed 3 times and I was never notified of either one! Unnecessary frustration and confusion!

Flight delayed so much had to switch to a different flight

Horrible! They broke both of my luggage's and all I got was an I'm sorry and a voucher!

Great! The check-in was easy, and the workers were nice and helpful. The inflight movies were easy to access, and we had a good time. The only scary part was the landing. We touched down hard instead of gently like other flights I have been on.

First class stewards have an ego problem and treat travelers unkind! Will never use your airlines again…

It was NOT pleasant. Started from checking our luggage to the last time getting off the plane. The crew was not friendly, the food was horrible and the seats were too close to each other that I got a bruise on my knee.

Late departure due to large number of wheel chair patrons. Used to having a box of snacks to select from in comfort plus. The flight attendant just rattled off what was available and asked us to pick. Felt rushed and uncomfortable. Seat was great. Prefer having the screen on the seat in front of me instead of having to pull it up from the seat side. Lots of room for my carryon under the seat in front of me.

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

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

Boarding in Paris was a nightmare for us. Why passengers have to get checked luggage tickets and then to go to counter to get luggage weight and send to the conveyor? We counted 14 security and airline checks before getting in the plane. We will never again use United or travel to France, neither stop by IAD airport.

They changed my flight 5 hours before it took off and changed my connecting airport messing up my entire 1st day in Japan.

Ridiculously slow disorganized boarding, ended up 35 min late and people missed connections

Really solid flight! The in-flight entertainment screens are not very touch-responsive in the way that of other airlines’ are, which was my only issue. But otherwise we had good food and drink offerings and the flight attendants were very welcoming.

Left late after one day delay. Even after we were called to board we stood in line for 30 minutes. Seemed disorganized.

They opened my checked bag and even though my lock was tsa approved, they loose my lock and left my bag just like that. Incompetent people, very upset about it. I’ll try to avoid traveling with united

Slight delay but not bad. UA app worked well! Got regular updates of gate changes, etc. Don't have any complaints.

Luggage management is poor, my missing luggage is still lingering.

Short and everyone communicated with me about the changes every step of the way.

Crew was good. Check-in and boarding was terrible. Family wasn’t seated together. Online check-in wasn’t available.

It was on time, which is always a good thing. There wasn’t any food hence my okay rating.

Experience was fine. Seats were cramped, and we had to wait for repairs before we could take of. Even though the door remained open, we were warned that leaving the plane could cause difficulty trying to fly out later. Staff was pleasant, and climate control was fortunately working. We had trouble at the DFW terminal, but I don't think that was AA's fault.

Excellent accommodating crew at gate and on board. Baggage claim and gate checking were flawless.

This flight was fine but had no time to breathe as the connection was late from Sea to ORD.. Super stressful. If we checked bags, the trip would have been very distressed.

Best flight by a pilot I’ve ever been on as a 62 year old

Boarding, Seating, Flight Attendants, flight was okay. My seat was uncomfortable.

Late and next flight even later. Who leaves at 245 am and arrives at 330 am ? No wifi, 4 hr flight and one bag of pretzels? AA should be ashamed

No problems on this flight. Entertainment system worked well. On time take off and arrival. Smooth most of the way.

After multiple delays (I lost count), the flight was canceled due to a "maintenance issue". So instead of a direct flight arriving at 5:00, I had to take a flight connecting through Chicago. That flight was also delayed, partially because the plane from the cancelled flight hadnt been removed from the gate and there was nowhere for the other plane to park. (Did nobody think this might be an issue during the hours after that flight was canceled?) The connecting flight out of Chicago was delayed as well. I didn't arrive until 12:30am the next morning. I should have just cancelled the trip. It wasn't worth the hassle and stress.

Perfect flight. Efficient boarding, on time take off and early arrival. Generally smooth flight.

Great! A delay in taking off but that’s it

Terrible boarding experience at sea tac. Displayed on time departure despite being about an hour behind in boarding time. Boarded a bus to go to the tarmac to then board onto the plane.

Hidden fees everywhere while we aware of the fees but it quickly added up to a premium airline. From 12+ dollars to pick your set to $55 dollars a checked bag. No counter at the Portland Airport until 2 hrs before the flight made it so we couldn't get anything to eat before the flight. Pre checking your bags wasn't working on-line or at the kiosk, so we had to pay extra 5 dollars per bag for counter checking. So after everything was said and done, we ended up paying an extra $200. Plane was nice and clean plane staff was nice and attentive.

Excellent. Except seat C2 starting to be worned down. Very uncomfortable.

22 hour delayed flight. I will not fly again. I missed training due to this.

Well my connecting flight was initially delayed 2 hours. Then it became a 21 hour delay. When I woke up the next morning the flight was then delayed another hour. I ended up missing a day and a half of training due to this. When asked if there was any way I could be transferred to a different flight I was told no because it was under a 24 hour delay. I will not fly with this airline again.

The delay was a pain… Loved the crew and they made up time and treated us very well. Ticket counter was awesome, boarding agents not so much

The delay was a pain… Loved the crew and they made up time and treated us very well.

I was flying from San Francisco to New York and had a layover in Minneapolis where they refused to let me have my bag and charged me $65, a very bad experience for me

This flight was canceled after waiting for hours at the airport. We knew if was delayed, but were not informed of the cancelation in a timely manner. There were no Sun Country representatives at the gate to tell us. Finally, representatives from Southwest Airlines called out over the intercom asking for Sun Country to come up to the gate. After the cancelation, no one seemed to know exactly what was going on and we had to go to the check-in area downstairs and wait in line for any information. We were not assisted with another flight. We ended up paying a lot more to fly home the next day with another airline.

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.
11/16Sat
nonstopAlaska Airlines
5h 01mSEA-IAD
$112
11/6Wed
2 stopsSouthwest
13h 10mSEA-IAD
$113
11/2Sat
1 stopAmerican Airlines
7h 47mSEA-IAD
$115
10/31Thu
nonstopDelta
5h 05mSEA-IAD
$119
12/3Tue
2 stopsAmerican Airlines
10h 56mSEA-IAD
$120
10/28Mon
nonstopDelta
4h 58mSEA-IAD
$124
10/27Sun
1 stopSun Country Air
25h 49mSEA-IAD
$148
10/24Thu
nonstopUnited Airlines
5h 05mSEA-IAD
$150
11/1Fri
1 stopUnited Airlines
7h 43mSEA-IAD
$153
10/27Sun
1 stopSun Country Air
13h 27mSEA-IAD
$165

Search by stops

Search by airline

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Last minute flights from Seattle to Dulles Intl

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.
10/4Fri
nonstopDelta
5h 06mSEA-IAD
10/12Sat
nonstopDelta
6h 02mIAD-SEA
$467
10/3Thu
multi-stopAlaska Airlines
10h 30mSEA-IAD
10/6Sun
nonstopAlaska Airlines
5h 51mIAD-SEA
$476
10/7Mon
nonstopUnited Airlines
5h 05mSEA-IAD
10/12Sat
multi-stopUnited Airlines
8h 47mIAD-SEA
$477
10/4Fri
multi-stopAlaska Airlines
12h 30mSEA-IAD
10/7Mon
multi-stopAlaska Airlines
9h 26mIAD-SEA
$486
10/3Thu
multi-stopAmerican Airlines
8h 24mSEA-IAD
10/15Tue
multi-stopAmerican Airlines
10h 50mIAD-SEA
$491
10/3Thu
multi-stopAmerican Airlines
10h 06mSEA-IAD
10/8Tue
multi-stopAmerican Airlines
10h 58mIAD-SEA
$496
10/5Sat
nonstopUnited Airlines
5h 05mSEA-IAD
10/11Fri
multi-stopUnited Airlines
8h 25mIAD-SEA
$503
10/5Sat
multi-stopUnited Airlines
8h 50mSEA-IAD
10/11Fri
multi-stopUnited Airlines
8h 25mIAD-SEA
$512
10/4Fri
nonstopDelta
5h 05mSEA-IAD
10/14Mon
nonstopDelta
6h 02mIAD-SEA
$517
10/6Sun
multi-stopSun Country Air
13h 41mSEA-IAD
10/13Sun
multi-stopSun Country Air
9h 25mIAD-SEA
$655

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Everything you need to know for your flight from Seattle to Dulles Intl

Information on your arrival and departure airports