€86 Cheap Flights Washington to Seattle (WAS-SEA)

View €86 flight on Wed, 1 Oct 2025Opens in a new window

Popular airlines from Washington to Seattle, WA (SEA-Seattle - Tacoma Intl.)

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Cheap flights from Washington to Seattle (WAS-SEA)

Prices were available within the past 7 days and start at €86 for one-way flights and €171 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 22 Sep - Tue, 30 Sep
BWI
Baltimore
SEA
Seattle
€171 Return, found 13 hours ago
€171
Return
found 13 hours ago
Select Delta flight, departing Mon, 22 Sep from Baltimore to Seattle, returning Tue, 30 Sep, priced at €171 found 13 hours ago
American Airlines
Tue, 9 Sep - Thu, 11 Sep
IAD
Washington
SEA
Seattle
€173 Return, found 2 days ago
€173
Return
found 2 days ago
Select American Airlines flight, departing Tue, 9 Sep from Washington to Seattle, returning Thu, 11 Sep, priced at €173 found 2 days ago
Delta
Mon, 25 Aug - Wed, 3 Sep
BWI
Baltimore
SEA
Seattle
€182 Return, found 3 days ago
€182
Return
found 3 days ago
Select Delta flight, departing Mon, 25 Aug from Baltimore to Seattle, returning Wed, 3 Sep, priced at €182 found 3 days ago
Delta
Fri, 19 Sep - Fri, 26 Sep
BWI
Baltimore
SEA
Seattle
€189 Return, found 1 day ago
€189
Return
found 1 day ago
Select Delta flight, departing Fri, 19 Sep from Baltimore to Seattle, returning Fri, 26 Sep, priced at €189 found 1 day ago
Delta
Mon, 22 Sep - Tue, 30 Sep
BWI
Baltimore
SEA
Seattle
€192 Return, found 13 hours ago
€192
Return
found 13 hours ago
Select Delta flight, departing Mon, 22 Sep from Baltimore to Seattle, returning Tue, 30 Sep, priced at €192 found 13 hours ago
Delta
Mon, 15 Sep - Mon, 22 Sep
BWI
Baltimore
SEA
Seattle
€203 Return, found 5 days ago
€203
Return
found 5 days ago
Select Delta flight, departing Mon, 15 Sep from Baltimore to Seattle, returning Mon, 22 Sep, priced at €203 found 5 days ago
Delta
Mon, 25 Aug - Wed, 3 Sep
BWI
Baltimore
SEA
Seattle
€204 Return, found 3 days ago
€204
Return
found 3 days ago
Select Delta flight, departing Mon, 25 Aug from Baltimore to Seattle, returning Wed, 3 Sep, priced at €204 found 3 days ago
Delta
Mon, 8 Sep - Tue, 16 Sep
BWI
Baltimore
SEA
Seattle
€214 Return, found 1 day ago
€214
Return
found 1 day ago
Select Delta flight, departing Mon, 8 Sep from Baltimore to Seattle, returning Tue, 16 Sep, priced at €214 found 1 day ago
United
Mon, 22 Sep - Tue, 30 Sep
BWI
Baltimore
SEA
Seattle
€236 Return, found 13 hours ago
€236
Return
found 13 hours ago
Select United flight, departing Mon, 22 Sep from Baltimore to Seattle, returning Tue, 30 Sep, priced at €236 found 13 hours ago
JetBlue Airways
Sat, 23 Aug - Sat, 30 Aug
DCA
Washington
SEA
Seattle
€644 Return, found 4 days ago
€644
Return
found 4 days ago
Select JetBlue Airways flight, departing Sat, 23 Aug from Washington to Seattle, returning Sat, 30 Aug, priced at €644 found 4 days ago

Find the cheapest month to fly from Washington (WAS) to Seattle (SEA)

September is typically the cheapest month to fly

From €119 - €222 per traveller.

Graph displaying average flight prices per month

Baltimore to Seattle route information
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Return price
€170
Distance
3725 km

Maryland to Seattle Flights

When looking for plane tickets from Maryland to Seattle, the ease and convenience of using Expedia simply can’t be beat. With tons of departure points and flights options from the top airline carriers, Expedia gives you the widest array of cheap flights to Seattle. Look for WAS to SEA airfare with the assurance that you have the largest online travel agency working for you.

Expedia lets you search across the largest number of airlines and Seattle flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Maryland Seattle flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Maryland to Seattle trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Seattle flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Maryland to Seattle with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from Washington, DC (WAS-All Airports) to Seattle - Tacoma Intl. Airport (SEA)?
Start packing your bags, because round-trip journeys from Washington, DC (WAS-All Airports) to SEA start from €171. That's based on airfares available within the last 7 days on Expedia for flights departing within the next year. Prices can move quickly, so book now to lock in the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington, DC (WAS-All Airports) to SEA?
When it comes to cancellation fees, each airline has different terms and conditions. If you decide to cancel your getaway, visit our Customer Service Portal.
How do I find cheap flights from Washington, DC (WAS-All Airports) to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Washington, DC (WAS-All Airports) to SEA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington, DC (WAS-All Airports) to SEA?
The flying distance between Washington, DC (WAS-All Airports) (WAS) and Sea-Tac Airport (SEA) is 3,700 kilometres. Listen to your favourite tunes or read a good book and the journey will fly by.
Which airlines fly direct from Washington, DC (WAS-All Airports) to Sea-Tac Airport?
Alaska Airlines (AS) is the number one choice for many travellers. It offers 117 flights between Washington, DC (WAS-All Airports) and Sea-Tac Airport each month. You could also check out the fares available with United Airlines (UA). It operates 60 flights every month between Maryland and SeaTac.
Are Washington, DC (WAS-All Airports) to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Washington, DC (WAS-All Airports) to Sea-Tac Airport at the last minute could be your ticket to a cheap deal. However, you might miss out on a flight altogether! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated all the time on Expedia.

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