Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Washington, D.C. to Seattle
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
Cheap bus & train deals from Washington, D.C. to Seattle
All round-trip flight deals to Seattle
See travel insights to Seattle from
How to get the cheapest flight ticket from Washington, D.C. to Seattle
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 Washington, D.C. to Seattle?
January. The cheapest time of year to fly to Seattle from Washington, D.C. is January. The most expensive is June.
How far in advance should you book Washington, D.C. to Seattle flights?
30 days before. The cheapest time to buy a flight from Washington, D.C. to Seattle is approximately 30 days to departure
How have Washington, D.C. to Seattle flight prices changed over time?
As of November 2024, prices for Washington, D.C. to Seattle flights are approximately 12% cheaper when compared to flights at the same time last year.
When to book flights from Washington, D.C. to Seattle
Cheap Washington, D.C. to Seattle (WAS to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Seattle
How far is Washington, D.C. to Seattle/Tacoma Intl by plane?
A flight from Washington, D.C. to Seattle/Tacoma Intl will travel around 3734,4 km.
When did momondo last update prices for flights from Washington, D.C. to Seattle/Tacoma Intl Airport?
Prices for flights from Washington, D.C. to Seattle/Tacoma Intl Airport were last updated today.
How old do you have to be to fly from Washington, D.C. to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. to Seattle?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. to Seattle is Boeing 737-800 Passenger/BBJ2 (winglets), representing 19,45% of all bookings. The subsequent popular models are Boeing 737 MAX 9 at 18,86%, Boeing 737-900 at 16,02%, and Boeing 737-800 at 13,28%.
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Seattle?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Seattle . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Washington, D.C. to Seattle with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Washington, D.C. to Seattle flights to just show those with flexible booking policies.
How can momondo help me find flights from Washington, D.C. to Seattle?
momondo helps you find the best flight between Washington, D.C. and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Washington, D.C. to Seattle right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Washington, D.C. to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.