Cheap Flights From Baltimore Washington Intl. Thurgood Marshall (BWI) To Seattle - Tacoma Intl. (SEA)

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Cheapest Flights from Baltimore (BWI) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $249 round trip and CA $139 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Feb 12 - Tue, Feb 17
BWI
Baltimore
SEA
Seattle
CA $249 Roundtrip, found 5 days ago
CA $249
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Feb 12 from Baltimore to Seattle, returning Tue, Feb 17, priced at CA $249 found 5 days ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $252 Roundtrip, found 2 days ago
CA $252
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $252 found 2 days ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $278 Roundtrip, found 2 days ago
CA $278
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $278 found 2 days ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $279 Roundtrip, found 2 days ago
CA $279
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $279 found 2 days ago
Wed, Jan 14 - Wed, Jan 21
BWI
Baltimore
SEA
Seattle
CA $302 Roundtrip, found 5 days ago
CA $302
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Jan 14 from Baltimore to Seattle, returning Wed, Jan 21, priced at CA $302 found 5 days ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $313 Roundtrip, found 2 days ago
CA $313
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $313 found 2 days ago
Thu, Feb 12 - Tue, Feb 17
BWI
Baltimore
SEA
Seattle
CA $317 Roundtrip, found 5 days ago
CA $317
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Feb 12 from Baltimore to Seattle, returning Tue, Feb 17, priced at CA $317 found 5 days ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $318 Roundtrip, found 2 days ago
CA $318
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $318 found 2 days ago
Thu, Feb 12 - Tue, Feb 17
BWI
Baltimore
SEA
Seattle
CA $321 Roundtrip, found 5 days ago
CA $321
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Feb 12 from Baltimore to Seattle, returning Tue, Feb 17, priced at CA $321 found 5 days ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $354 Roundtrip, found 2 days ago
CA $354
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $354 found 2 days ago

Frequently asked questions

Are there direct flights from BWI to Seattle - Tacoma Intl. Airport (SEA)?
If you'd prefer to avoid layovers, it's smart to arrange your flight from BWI to Sea-Tac Airport well in advance of your departure. Alaska Airlines is the only airline that operates nonstop flights to Seattle from Baltimore.
What airlines fly from BWI Marshall to Seattle - Tacoma Intl. Airport (SEA)?
Hoping to fly directly from BWI Airport to Sea-Tac Airport? It's your lucky day. Alaska Airlines (AS) offers as many as 30 flights every month and is a popular choice with many wise wanderers.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Baltimore (BWI)

Travelers at BWI love to visit these top cities. Roam to the top destinations from Baltimore (BWI) today with the cheap prices from Travelocity!

Popular Flight Routes from Seattle (SEA)

Travelers at SEA love to visit these top cities. Roam to the top destinations from Seattle(SEA) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.