￥27,970 Cheap Flights from Bellingham (BLI) to Seattle (SEA)

View ￥27,970 flight on Wed, Oct 29, 2025Opens in a new window

Popular airlines from Bellingham, WA (BLI-Bellingham Intl.) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Bellingham to Seattle (BLI-SEA)

Prices were available within the past 7 days and start at ￥27,970 for one-way flights and ￥55,070 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Sep 10 - Sat, Sep 13
BLI
Bellingham
SEA
Seattle
￥55,070 Roundtrip, found 5 days ago
￥55,070
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Sep 10 from Bellingham to Seattle, returning Sat, Sep 13, priced at ￥55,070 found 5 days ago
American Airlines
Wed, Sep 10 - Sat, Sep 13
BLI
Bellingham
SEA
Seattle
￥58,080 Roundtrip, found 5 days ago
￥58,080
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Sep 10 from Bellingham to Seattle, returning Sat, Sep 13, priced at ￥58,080 found 5 days ago
American Airlines
Wed, Sep 10 - Mon, Sep 15
BLI
Bellingham
SEA
Seattle
￥59,580 Roundtrip, found 4 days ago
￥59,580
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Sep 10 from Bellingham to Seattle, returning Mon, Sep 15, priced at ￥59,580 found 4 days ago
American Airlines
Wed, Sep 10 - Mon, Sep 15
BLI
Bellingham
SEA
Seattle
￥72,810 Roundtrip, found 4 days ago
￥72,810
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Sep 10 from Bellingham to Seattle, returning Mon, Sep 15, priced at ￥72,810 found 4 days ago

Find the cheapest month to fly from Bellingham (BLI) to Seattle (SEA)

October is typically the cheapest month to fly

From ￥17,435 - ￥44,036 per traveler.

Graph displaying average flight prices per month

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Flights from Bellingham (BLI) to Seattle (SEA)
Origin airport
Bellingham Intl.
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
￥55,070
Distance
150 km

Bellingham to Seattle Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Bellingham to will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seattle.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with BLI to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind Bellingham for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEA with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Bellingham International Airport to Sea-Tac Airport?
Based on fares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights between BLI and Seattle - Tacoma Intl. Airport (SEA) start from ￥55,070. Make your booking today to get the best price for your exciting adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Bellingham International Airport to Sea-Tac Airport?
Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Bellingham International Airport to Sea-Tac Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for BLI to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Bellingham International Airport to SEA?
You can forget about a movie marathon on this flight — it's only 150 kilometers from Bellingham to SeaTac. Find your way to your seat, order some snacks and you'll be in SeaTac in no time.
Which airlines fly direct from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
Flying directly from Bellingham International Airport to Seattle - Tacoma Intl. Airport (SEA) is easy with Alaska Airlines (AS). This popular carrier offers 60 flights every month.
Are BLI to SEA flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Bellingham Intl. Airport (BLI) to Sea-Tac Airport at the last minute could be your ticket to a great deal. However, you might miss out on a flight altogether! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred carrier hasn't released tickets yet, check back frequently as deals are updated all the time on Expedia.

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