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 $319 round trip and CA $139 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Sep. 22 - Tue, Sep. 30
BWI
Baltimore
SEA
Seattle
CA $319 Roundtrip, found 21 hours ago
CA $319
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Mon, Sep. 22 from Baltimore to Seattle, returning Tue, Sep. 30, priced at CA $319 found 21 hours ago
Thu, Sep. 25 - Wed, Oct. 1
BWI
Baltimore
SEA
Seattle
CA $342 Roundtrip, found 3 days ago
CA $342
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Sep. 25 from Baltimore to Seattle, returning Wed, Oct. 1, priced at CA $342 found 3 days ago
Mon, Sep. 22 - Tue, Sep. 30
BWI
Baltimore
SEA
Seattle
CA $365 Roundtrip, found 6 days ago
CA $365
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Sep. 22 from Baltimore to Seattle, returning Tue, Sep. 30, priced at CA $365 found 6 days ago
Mon, Sep. 22 - Tue, Sep. 30
BWI
Baltimore
SEA
Seattle
CA $381 Roundtrip, found 21 hours ago
CA $381
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Mon, Sep. 22 from Baltimore to Seattle, returning Tue, Sep. 30, priced at CA $381 found 21 hours ago
Thu, Sep. 25 - Wed, Oct. 1
BWI
Baltimore
SEA
Seattle
CA $397 Roundtrip, found 3 days ago
CA $397
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Sep. 25 from Baltimore to Seattle, returning Wed, Oct. 1, priced at CA $397 found 3 days ago
Mon, Sep. 22 - Tue, Sep. 30
BWI
Baltimore
SEA
Seattle
CA $424 Roundtrip, found 21 hours ago
CA $424
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Mon, Sep. 22 from Baltimore to Seattle, returning Tue, Sep. 30, priced at CA $424 found 21 hours ago
Sat, Oct. 4 - Tue, Oct. 14
BWI
Baltimore
SEA
Seattle
CA $447 Roundtrip, found 3 days ago
CA $447
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Oct. 4 from Baltimore to Seattle, returning Tue, Oct. 14, priced at CA $447 found 3 days ago
Mon, Sep. 22 - Tue, Sep. 30
BWI
Baltimore
SEA
Seattle
CA $488 Roundtrip, found 21 hours ago
CA $488
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Mon, Sep. 22 from Baltimore to Seattle, returning Tue, Sep. 30, priced at CA $488 found 21 hours ago
Mon, Sep. 22 - Tue, Sep. 30
BWI
Baltimore
SEA
Seattle
CA $501 Roundtrip, found 21 hours ago
CA $501
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Mon, Sep. 22 from Baltimore to Seattle, returning Tue, Sep. 30, priced at CA $501 found 21 hours ago
Mon, Sep. 22 - Tue, Sep. 30
BWI
Baltimore
SEA
Seattle
CA $607 Roundtrip, found 21 hours ago
CA $607
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Mon, Sep. 22 from Baltimore to Seattle, returning Tue, Sep. 30, priced at CA $607 found 21 hours ago

Seattle - Tacoma Intl. flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
Sleep Inn - SeaTac Airport

Sleep Inn - SeaTac Airport

2.5 out of 5
Price was CA $1,021, price is now CA $700 per person
CA $700
per person
Oct 9 - Oct 13
found 20 hours ago
Roundtrip non-stop flight included
Baltimore (BWI) to Seattle (SEA)
1 Hotel Seattle

1 Hotel Seattle

5 out of 5
Price was CA $2,233, price is now CA $1,242 per person
CA $1,242
per person
Oct 9 - Oct 13
found 20 hours ago
Roundtrip non-stop flight included
Baltimore (BWI) to Seattle (SEA)
Mayflower Park Hotel

Mayflower Park Hotel

4 out of 5
Price was CA $1,347, price is now CA $959 per person
CA $959
per person
Oct 9 - Oct 13
found 20 hours ago
Roundtrip non-stop flight included
Baltimore (BWI) to Seattle (SEA)
Mediterranean Inn

Mediterranean Inn

3 out of 5
Price was CA $1,351, price is now CA $982 per person
CA $982
per person
Oct 9 - Oct 13
found 20 hours ago
Roundtrip non-stop flight included
Baltimore (BWI) to Seattle (SEA)
Hotel 1000, LXR Hotels & Resorts

Hotel 1000, LXR Hotels & Resorts

4.5 out of 5
Price was CA $1,926, price is now CA $1,412 per person
CA $1,412
per person
Oct 9 - Oct 13
found 20 hours ago
Roundtrip non-stop flight included
Baltimore (BWI) to Seattle (SEA)
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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.