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 $252 round trip and CA $139 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $252 Roundtrip, found 1 day ago
CA $252
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $252 found 1 day ago
Thu, Jan 29 - Sat, Feb 7
BWI
Baltimore
SEA
Seattle
CA $272 Roundtrip, found 6 days ago
CA $272
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Jan 29 from Baltimore to Seattle, returning Sat, Feb 7, priced at CA $272 found 6 days ago
Thu, Jan 29 - Sat, Feb 7
BWI
Baltimore
SEA
Seattle
CA $273 Roundtrip, found 6 days ago
CA $273
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Jan 29 from Baltimore to Seattle, returning Sat, Feb 7, priced at CA $273 found 6 days ago
Thu, Feb 12 - Tue, Feb 17
BWI
Baltimore
SEA
Seattle
CA $276 Roundtrip, found 13 hours ago
CA $276
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Thu, Feb 12 from Baltimore to Seattle, returning Tue, Feb 17, priced at CA $276 found 13 hours ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $278 Roundtrip, found 1 day ago
CA $278
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $278 found 1 day ago
Fri, Jan 30 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $279 Roundtrip, found 5 days ago
CA $279
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Jan 30 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $279 found 5 days ago
Fri, Jan 30 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $280 Roundtrip, found 5 days ago
CA $280
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jan 30 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $280 found 5 days ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $285 Roundtrip, found 1 day ago
CA $285
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $285 found 1 day ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $289 Roundtrip, found 1 day ago
CA $289
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $289 found 1 day ago
Sat, Jan 31 - Tue, Feb 10
BWI
Baltimore
SEA
Seattle
CA $300 Roundtrip, found 1 day ago
CA $300
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Baltimore to Seattle, returning Tue, Feb 10, priced at CA $300 found 1 day 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.
*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.