Cheap Flights From Bellingham Intl. (BLI) To Seattle - Tacoma Intl. (SEA)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly

Cheapest Flights from Bellingham (BLI) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $192 round trip and CA $125 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Feb 3 - Wed, Mar 11
BLI
Bellingham
SEA
Seattle
CA $192 Roundtrip, found 4 days ago
CA $192
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Feb 3 from Bellingham to Seattle, returning Wed, Mar 11, priced at CA $192 found 4 days ago
Sat, Feb 7 - Tue, Mar 3
BLI
Bellingham
SEA
Seattle
CA $193 Roundtrip, found 20 hours ago
CA $193
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Sat, Feb 7 from Bellingham to Seattle, returning Tue, Mar 3, priced at CA $193 found 20 hours ago
Thu, Feb 5 - Tue, Mar 3
BLI
Bellingham
SEA
Seattle
CA $194 Roundtrip, found 20 hours ago
CA $194
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from Bellingham to Seattle, returning Tue, Mar 3, priced at CA $194 found 20 hours ago
Thu, Feb 5 - Mon, Mar 2
BLI
Bellingham
SEA
Seattle
CA $195 Roundtrip, found 20 hours ago
CA $195
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from Bellingham to Seattle, returning Mon, Mar 2, priced at CA $195 found 20 hours ago
Sat, Dec 6 - Sun, Dec 7
BLI
Bellingham
SEA
Seattle
CA $197 Roundtrip, found 1 day ago
CA $197
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Bellingham to Seattle, returning Sun, Dec 7, priced at CA $197 found 1 day ago
Sat, Dec 6 - Sun, Dec 7
BLI
Bellingham
SEA
Seattle
CA $207 Roundtrip, found 1 day ago
CA $207
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Bellingham to Seattle, returning Sun, Dec 7, priced at CA $207 found 1 day ago
Fri, Sep 11 - Mon, Sep 21
BLI
Bellingham
SEA
Seattle
CA $209 Roundtrip, found 2 days ago
CA $209
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Sep 11 from Bellingham to Seattle, returning Mon, Sep 21, priced at CA $209 found 2 days ago
Sat, Dec 6 - Sun, Dec 7
BLI
Bellingham
SEA
Seattle
CA $211 Roundtrip, found 1 day ago
CA $211
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Bellingham to Seattle, returning Sun, Dec 7, priced at CA $211 found 1 day ago
Sat, Dec 6 - Sun, Dec 7
BLI
Bellingham
SEA
Seattle
CA $212 Roundtrip, found 1 day ago
CA $212
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Bellingham to Seattle, returning Sun, Dec 7, priced at CA $212 found 1 day ago
Thu, Dec 4 - Sat, Dec 6
BLI
Bellingham
SEA
Seattle
CA $221 Roundtrip, found 6 days ago
CA $221
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Bellingham to Seattle, returning Sat, Dec 6, priced at CA $221 found 6 days 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 $491, price is now CA $358 per person
CA $358
per person
Dec 18 - Dec 21
found 1 day ago
Roundtrip flight included
Bellingham (BLI) to Seattle (SEA)
Hilton Seattle Airport & Conference Center

Hilton Seattle Airport & Conference Center

4 out of 5
Price was CA $523, price is now CA $404 per person
CA $404
per person
Dec 18 - Dec 21
found 1 day ago
Roundtrip flight included
Bellingham (BLI) to Seattle (SEA)
DoubleTree by Hilton Seattle Airport

DoubleTree by Hilton Seattle Airport

4 out of 5
Price was CA $500, price is now CA $393 per person
CA $393
per person
Dec 18 - Dec 21
found 1 day ago
Roundtrip flight included
Bellingham (BLI) to Seattle (SEA)
Comfort Inn & Suites Sea-Tac Airport

Comfort Inn & Suites Sea-Tac Airport

3 out of 5
Price was CA $479, price is now CA $378 per person
CA $378
per person
Dec 18 - Dec 21
found 1 day ago
Roundtrip flight included
Bellingham (BLI) to Seattle (SEA)
citizenM Seattle Pioneer Square

citizenM Seattle Pioneer Square

4 out of 5
Price was CA $534, price is now CA $433 per person
CA $433
per person
Dec 18 - Dec 21
found 1 day ago
Roundtrip flight included
Bellingham (BLI) to Seattle (SEA)
Don't see what you're looking for?
See all available trips from Bellingham Intl. to Seattle - Tacoma Intl.
View all trips

Frequently asked questions

Are there direct flights from Bellingham Intl. Airport (BLI) to SEA?
For a speedy trip between Bellingham and Seattle, try Alaska Airlines. This airline operates direct flights from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA).
What airlines fly from Bellingham Intl. Airport (BLI) to SEA?
With Alaska Airlines, you won't have to stress about extended layovers or standing around waiting for your next flight. This popular airline company will take you nonstop from Bellingham to Seattle on one of the 139 flights offered on this route each month.
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.