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 $324 round trip and CA $155 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Aug 22 - Mon, Aug 31
BWI
Baltimore
SEA
Seattle
CA $324 Roundtrip, found 5 days ago
CA $324
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Aug 22 from Baltimore to Seattle, returning Mon, Aug 31, priced at CA $324 found 5 days ago
Fri, Aug 21 - Mon, Aug 31
BWI
Baltimore
SEA
Seattle
CA $325 Roundtrip, found 5 days ago
CA $325
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Aug 21 from Baltimore to Seattle, returning Mon, Aug 31, priced at CA $325 found 5 days ago
Mon, Jun 1 - Fri, Jun 5
BWI
Baltimore
SEA
Seattle
CA $364 Roundtrip, found 1 day ago
CA $364
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Jun 1 from Baltimore to Seattle, returning Fri, Jun 5, priced at CA $364 found 1 day ago
Mon, Jun 1 - Fri, Jun 5
BWI
Baltimore
SEA
Seattle
CA $377 Roundtrip, found 1 day ago
CA $377
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Jun 1 from Baltimore to Seattle, returning Fri, Jun 5, priced at CA $377 found 1 day ago
Fri, Aug 21 - Mon, Aug 31
BWI
Baltimore
SEA
Seattle
CA $379 Roundtrip, found 5 days ago
CA $379
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Aug 21 from Baltimore to Seattle, returning Mon, Aug 31, priced at CA $379 found 5 days ago
Mon, Jun 1 - Fri, Jun 5
BWI
Baltimore
SEA
Seattle
CA $396 Roundtrip, found 1 day ago
CA $396
Roundtrip
found 1 day ago
Select Sun Country Airlines flight, departing Mon, Jun 1 from Baltimore to Seattle, returning Fri, Jun 5, priced at CA $396 found 1 day ago
Fri, Aug 21 - Mon, Aug 31
BWI
Baltimore
SEA
Seattle
CA $409 Roundtrip, found 5 days ago
CA $409
Roundtrip
found 5 days ago
Select Sun Country Airlines flight, departing Fri, Aug 21 from Baltimore to Seattle, returning Mon, Aug 31, priced at CA $409 found 5 days ago
Thu, Mar 19 - Wed, Mar 25
BWI
Baltimore
SEA
Seattle
CA $414 Roundtrip, found 17 hours ago
CA $414
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Thu, Mar 19 from Baltimore to Seattle, returning Wed, Mar 25, priced at CA $414 found 17 hours ago
Sat, Aug 22 - Mon, Aug 31
BWI
Baltimore
SEA
Seattle
CA $434 Roundtrip, found 5 days ago
CA $434
Roundtrip
found 5 days ago
Select Sun Country Airlines flight, departing Sat, Aug 22 from Baltimore to Seattle, returning Mon, Aug 31, priced at CA $434 found 5 days ago
Thu, May 28 - Mon, Jun 1
BWI
Baltimore
SEA
Seattle
CA $460 Roundtrip, found 22 hours ago
CA $460
Roundtrip
found 22 hours ago
Select Alaska Airlines flight, departing Thu, May 28 from Baltimore to Seattle, returning Mon, Jun 1, priced at CA $460 found 22 hours 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.