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 $250 round trip and CA $126 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Dec 16 - Tue, Jan 6
BWI
Baltimore
SEA
Seattle
CA $250 Roundtrip, found 5 hours ago
CA $250
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Dec 16 from Baltimore to Seattle, returning Tue, Jan 6, priced at CA $250 found 5 hours ago
Sun, Nov 23 - Wed, Dec 3
BWI
Baltimore
SEA
Seattle
CA $254 Roundtrip, found 5 hours ago
CA $254
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Sun, Nov 23 from Baltimore to Seattle, returning Wed, Dec 3, priced at CA $254 found 5 hours ago
Sun, Nov 23 - Wed, Dec 3
BWI
Baltimore
SEA
Seattle
CA $265 Roundtrip, found 5 hours ago
CA $265
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Sun, Nov 23 from Baltimore to Seattle, returning Wed, Dec 3, priced at CA $265 found 5 hours ago
Sun, Feb 1 - Tue, Feb 3
BWI
Baltimore
SEA
Seattle
CA $275 Roundtrip, found 5 hours ago
CA $275
Roundtrip
found 5 hours ago
Select Delta flight, departing Sun, Feb 1 from Baltimore to Seattle, returning Tue, Feb 3, priced at CA $275 found 5 hours ago
Tue, Dec 16 - Tue, Jan 6
BWI
Baltimore
SEA
Seattle
CA $277 Roundtrip, found 5 hours ago
CA $277
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Dec 16 from Baltimore to Seattle, returning Tue, Jan 6, priced at CA $277 found 5 hours ago
Mon, Nov 24 - Thu, Nov 27
BWI
Baltimore
SEA
Seattle
CA $279 Roundtrip, found 5 hours ago
CA $279
Roundtrip
found 5 hours ago
Select Delta flight, departing Mon, Nov 24 from Baltimore to Seattle, returning Thu, Nov 27, priced at CA $279 found 5 hours ago
Sun, Nov 23 - Wed, Dec 3
BWI
Baltimore
SEA
Seattle
CA $281 Roundtrip, found 5 hours ago
CA $281
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Sun, Nov 23 from Baltimore to Seattle, returning Wed, Dec 3, priced at CA $281 found 5 hours ago
Wed, Dec 3 - Fri, Dec 5
BWI
Baltimore
SEA
Seattle
CA $293 Roundtrip, found 5 hours ago
CA $293
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Wed, Dec 3 from Baltimore to Seattle, returning Fri, Dec 5, priced at CA $293 found 5 hours ago
Sat, Nov 1 - Sat, Nov 8
BWI
Baltimore
SEA
Seattle
CA $295 Roundtrip, found 5 hours ago
CA $295
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Nov 1 from Baltimore to Seattle, returning Sat, Nov 8, priced at CA $295 found 5 hours ago
Sat, Nov 1 - Sat, Nov 8
BWI
Baltimore
SEA
Seattle
CA $296 Roundtrip, found 5 hours ago
CA $296
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Sat, Nov 1 from Baltimore to Seattle, returning Sat, Nov 8, priced at CA $296 found 5 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.
*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.