$79 Cheap Flights from Seattle (SEA) to Bellingham (BLI)

View $79 flight on Tue, Dec 9, 2025Opens in a new window

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

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Cheap Flights from Seattle to Bellingham (SEA-BLI)

Prices were available within the past 7 days and start at $79 for one-way flights and $117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Sep 24 - Sat, Sep 27
SEA
Seattle
BLI
Bellingham
$117 Roundtrip, found 12 hours ago
$117
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Wed, Sep 24 from Seattle to Bellingham, returning Sat, Sep 27, priced at $117 found 12 hours ago
Alaska Airlines
Tue, Sep 30 - Sat, Oct 4
SEA
Seattle
BLI
Bellingham
$118 Roundtrip, found 1 day ago
$118
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle to Bellingham, returning Sat, Oct 4, priced at $118 found 1 day ago
Alaska Airlines
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle
BLI
Bellingham
$127 Roundtrip, found 1 hour ago
$127
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Seattle to Bellingham, returning Sun, Aug 31, priced at $127 found 1 hour ago
Alaska Airlines
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle
BLI
Bellingham
$128 Roundtrip, found 1 day ago
$128
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Seattle to Bellingham, returning Sun, Aug 31, priced at $128 found 1 day ago
Alaska Airlines
Sun, Sep 21 - Sun, Sep 28
SEA
Seattle
BLI
Bellingham
$137 Roundtrip, found 17 hours ago
$137
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Sun, Sep 21 from Seattle to Bellingham, returning Sun, Sep 28, priced at $137 found 17 hours ago
Alaska Airlines
Sat, Jan 17 - Wed, Jan 21
SEA
Seattle
BLI
Bellingham
$138 Roundtrip, found 12 hours ago
$138
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Sat, Jan 17 from Seattle to Bellingham, returning Wed, Jan 21, priced at $138 found 12 hours ago
Hawaiian Airlines
Sun, Sep 21 - Fri, Oct 3
SEA
Seattle
BLI
Bellingham
$148 Roundtrip, found 17 hours ago
$148
Roundtrip
found 17 hours ago
Select Hawaiian Airlines flight, departing Sun, Sep 21 from Seattle to Bellingham, returning Fri, Oct 3, priced at $148 found 17 hours ago
Alaska Airlines
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle
BLI
Bellingham
$148 Roundtrip, found 1 day ago
$148
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Seattle to Bellingham, returning Sun, Aug 31, priced at $148 found 1 day ago
Hawaiian Airlines
Tue, Oct 7 - Wed, Oct 8
SEA
Seattle
BLI
Bellingham
$157 Roundtrip, found 20 hours ago
$157
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Tue, Oct 7 from Seattle to Bellingham, returning Wed, Oct 8, priced at $157 found 20 hours ago
American Airlines
Tue, Sep 30 - Sat, Oct 4
SEA
Seattle
BLI
Bellingham
$200 Roundtrip, found 1 day ago
$200
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Sep 30 from Seattle to Bellingham, returning Sat, Oct 4, priced at $200 found 1 day ago

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

September is typically the cheapest month to fly

From $117 - $293 per traveler.

Graph displaying average flight prices per month

Alternative airports near Bellingham

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Abbotsford Intl. YXX. Average driving time to city center is 37 minutes. Flights from $576
YXX
Abbotsford Intl.
Average driving time to city center37 min
Flights from $576
0
Flights from Seattle (SEA) to Bellingham (BLI)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Bellingham Intl.
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$117
Distance
94 mi

Seattle to Bellingham Flights

The cheapest times to fly from Seattle to Bellingham

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Bellingham are during the month of September. You can find some of the cheapest flights from Seattle to Bellingham with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Bellingham

Sunday is one of the best days to book for cheap flights from Seattle to Bellingham: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Bellingham

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Bellingham in 2025. You can also book with separate airlines for your outbound and return journeys, from $79 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Bellingham flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Bellingham airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI) cost?
Cheap round-trip flights from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI) start at $117. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SEA on August 19 2025 and touching down at BLI. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SEA to BLI?
The cheapest flights from SEA to BLI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI)?
You can fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI) on an Alaska Airlines flight.
What is the cheapest airline that flies from SEA to BLI?
Book a flight from SEA to BLI with Alaska Airlines. This carrier currently has the cheapest one-way ticket on this route, starting from $79. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI)?
When jetting out of Seattle - Tacoma Intl. Airport (SEA), you'll have a choice from an average of 3 daily direct flights to Bellingham Intl. Airport (BLI).
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI)?
More passengers fly between SEA and BLI at 8 PM than at any other point in the day. Rather skip the crowds? Try choosing a quieter departure window and you're likely to save on your fare as well.
What day of the week has the most flights from SEA to BLI?
If you travel on a Thursday, you'll get the biggest range of choices for flights from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI).
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI)?
Catch the earliest flight at around 11:20AM UTC-8, departing from Seattle - Tacoma Intl. Airport (SEA). You'll be flying for about 58m, touching down at Bellingham Intl. Airport (BLI) at approximately 12:18PM UTC-8.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI)?
Typically, it takes 50 minutes to cover the 95 mi from SEA to BLI.
What airline has the least delays from SEA to BLI?
American Airlines has the best performance for on-time direct flights from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI), with an on-time score of 100%. Use the Expedia App to see your flight status before you jet off and get immediate updates about any trip changes.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI)?
To touch down at Bellingham Intl. Airport (BLI) on time, book a flight that takes off from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Bellingham from Seattle - Tacoma Intl. Airport (SEA)?
If you're flying on a direct flight from Seattle - Tacoma Intl. Airport (SEA) to Bellingham, Bellingham Intl. Airport (BLI) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI) last-minute?
Last-minute fares from SEA to BLI are generally more expensive. For the best prices, start looking for flights as early as possible. That said, if you can play around with your travel dates, you may score a cheap fare right before you leave.
Is it cheaper to book a SEA to BLI flight and hotel package?
You'll typically save money by securing a SEA to BLI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your ideal accommodations and flights, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Bellingham Intl. Airport (BLI)?
In most cases, you can reschedule or cancel your SEA to BLI flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want more details, head to our Customer Service portal.

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Seattle nearby Airports

Seattle Paine Field Intl. Airport

Seattle Paine Field Intl. Airport to Bellingham
$394.40
*Available to One Key members.