Cheap flights from Seattle to Washington, D.C. Dulles Intl Airport from $138
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Washington, D.C. Dulles Intl Airport departing on 12/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Delta flights from Seattle to Washington, D.C. Dulles Intl Airport
Our best Delta deals on Seattle to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines flights from Seattle to Washington, D.C. Dulles Intl Airport
Our best United Airlines deals on Seattle to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Seattle to Washington, D.C. Dulles Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from Seattle to Washington, D.C. Dulles Intl Airport?
January. The cheapest time of year to fly to Washington, D.C. Dulles Intl Airport from Seattle is January. Most expensive is June
What is the cheapest day to depart Seattle for Washington, D.C. Dulles Intl Airport?
Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday
When is the cheapest time to fly from Seattle to Washington, D.C. Dulles Intl Airport?
In the afternoon. Seattle to Washington, D.C. Dulles Intl Airport flights are approximately 22% more expensive at noon than in the afternoon
How far in advance should you book Seattle to Washington, D.C. Dulles Intl Airport flights?
34 days before. The cheapest time to buy a flight from Seattle to Washington, D.C. Dulles Intl Airport is approximately 34 days to departure
What cabin class options are available on Seattle to Washington, D.C. Dulles Intl Airport flights?
There are 4 cabin classes available to choose from on Seattle to Washington, D.C. Dulles Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Seattle to Washington, D.C. Dulles Intl Airport flights?
No. A direct flight is the cheapest option for a flight between Seattle to Washington, D.C. Dulles Intl Airport.
How have Seattle to Washington, D.C. Dulles Intl Airport flight prices changed over time?
As of November 2024, prices for Seattle to Washington, D.C. Dulles Intl Airport flights are approximately 4% cheaper when compared to flights at the same time last year.
How many flights depart from Seattle to Washington, D.C. Dulles Intl Airport on average per day?
14 flights are operational weekly from Seattle to Washington, D.C. Dulles Intl Airport as of November 2024. The most popular departure time for this route is 9:00AM, with 49% of flights per day taking off at noon.
How many flights depart from Seattle to Washington, D.C. Dulles Intl Airport on average per week?
98 flights are operational weekly from Seattle to Washington, D.C. Dulles Intl Airport as of November 2024. The most popular departure day for this route is Wed, with 19% of flights per week taking off on this day.
When to book flights from Seattle to Washington, D.C. Dulles Intl Airport
Cheap Seattle to Washington, D.C. Dulles Intl Airport (SEA to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Washington, D.C. Dulles Intl Airport
How far is Seattle/Tacoma Intl to Washington, D.C. Dulles Intl by plane?
There are 2299.7 mi between Seattle/Tacoma Intl and Washington, D.C. Dulles Intl. A reasonable flight in good conditions will take 4h 49m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport?
As of November 2024, there are 5 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Seattle to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Seattle and Washington, D.C. Dulles Intl Airport, the leading plane model is Boeing 737 MAX 9, making up 21.79% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 19.28%, Boeing 737-900 with 17.30%, and Boeing 737-800 with 11.42%.
What is the most popular airline from Seattle to Washington, D.C. Dulles Intl Airport?
momondo data reveals that the most frequently booked airline on the route from Seattle to Washington, D.C. Dulles Intl Airport is Alaska Airlines, representing 40.23% of all bookings. The subsequent popular airlines are United Airlines at 31.02%, Delta at 27.29%, and American Airlines at 0.96%.
Best airlines flying from Seattle to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Seattle to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $169 | Free Cancellation | Rating 7.0 415 reviews | |||
| PriceFrom $191 | Free Cancellation | Rating 8.0 8,756 reviews | |||
| PriceFrom $210 | Free Cancellation | Rating 8.0 9,461 reviews | |||
| PriceFrom $237 | Free Cancellation | Rating 7.4 9,171 reviews | |||
| PriceFrom $337 | Free Cancellation | Rating 7.2 10,000 reviews |
Delta Flights From Seattle to Washington, D.C. Dulles Intl Airport
Across 14 Delta flights from Seattle to Washington, D.C. Dulles Intl Airport this week, the average price was $401, with the best Delta deals starting from $191 round-trip. 8,756 users have rated Delta on momondo, with an average score of 8.0/10.
Alaska Airlines Flights From Seattle to Washington, D.C. Dulles Intl Airport
Alaska Airlines is also a popular choice for this route. Alaska Airlines flight deals for Seattle to Washington, D.C. Dulles Intl Airport start from as low as $210 round-trip, depending on your selected dates, with average Alaska Airlines deals seen on momondo around $423. Alaska Airlines operates 3 flights to Washington, D.C. Dulles Intl Airport from Seattle in an average week. Users have rated it 8.0/10 across 9,461 reviews.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Washington, D.C.?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Seattle to Washington, D.C. with flexible booking policies on momondo?
Yes. All flights to Washington, D.C. from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to Washington, D.C.?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Washington, D.C..
I’m not ready to book a flight from Seattle to Washington, D.C. right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Seattle to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.