$89 Cheap Flights from Bellingham (BLI) to Seattle (SEA)

View $89 flight on Sat, Jan 10, 2026Opens 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 $89 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Sat, Jan 10 - Sat, Jan 17
BLI
Bellingham
SEA
Seattle
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Sat, Jan 10 from Bellingham to Seattle, returning Sat, Jan 17, priced at $137 found 1 hour ago
Hawaiian Airlines
Mon, Nov 24 - Fri, Nov 28
BLI
Bellingham
SEA
Seattle
$138 Roundtrip, found 1 hour ago
$138
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Mon, Nov 24 from Bellingham to Seattle, returning Fri, Nov 28, priced at $138 found 1 hour ago
Alaska Airlines
Wed, Dec 17 - Sun, Dec 21
BLI
Bellingham
SEA
Seattle
$147 Roundtrip, found 14 hours ago
$147
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Wed, Dec 17 from Bellingham to Seattle, returning Sun, Dec 21, priced at $147 found 14 hours ago
Hawaiian Airlines
Wed, Mar 25 - Tue, Mar 31
BLI
Bellingham
SEA
Seattle
$148 Roundtrip, found 11 hours ago
$148
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Wed, Mar 25 from Bellingham to Seattle, returning Tue, Mar 31, priced at $148 found 11 hours ago
Alaska Airlines
Thu, Dec 11 - Sun, Dec 21
BLI
Bellingham
SEA
Seattle
$157 Roundtrip, found 19 hours ago
$157
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Bellingham to Seattle, returning Sun, Dec 21, priced at $157 found 19 hours ago
Hawaiian Airlines
Fri, Dec 12 - Thu, Dec 18
BLI
Bellingham
SEA
Seattle
$158 Roundtrip, found 19 hours ago
$158
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Fri, Dec 12 from Bellingham to Seattle, returning Thu, Dec 18, priced at $158 found 19 hours ago
Hawaiian Airlines
Mon, Dec 15 - Sun, Dec 21
BLI
Bellingham
SEA
Seattle
$168 Roundtrip, found 19 hours ago
$168
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Mon, Dec 15 from Bellingham to Seattle, returning Sun, Dec 21, priced at $168 found 19 hours ago
Alaska Airlines
Tue, Jun 16 - Fri, Jul 3
BLI
Bellingham
SEA
Seattle
$168 Roundtrip, found 4 days ago
$168
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 16 from Bellingham to Seattle, returning Fri, Jul 3, priced at $168 found 4 days ago
Hawaiian Airlines
Sun, Jan 11 - Fri, Jan 16
BLI
Bellingham
SEA
Seattle
$178 Roundtrip, found 1 hour ago
$178
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Sun, Jan 11 from Bellingham to Seattle, returning Fri, Jan 16, priced at $178 found 1 hour ago
American Airlines
Mon, Jan 12 - Mon, Jan 19
BLI
Bellingham
SEA
Seattle
$218 Roundtrip, found 1 hour ago
$218
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Mon, Jan 12 from Bellingham to Seattle, returning Mon, Jan 19, priced at $218 found 1 hour ago

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

January is typically the cheapest month to fly

From $117 - $317 per traveler.

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $238
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $238

Frequently asked questions

How much does a flight from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA) cost?
Snag a cheap one-way flight from $89 or cheap return flight from $137 from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
January is the least expensive month to fly from BLI to SEA. Timing your trip outside of the busy season is often the key to scoring lower fares.
Which airlines fly direct from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
Fly directly from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA) on an Alaska Airlines flight.
What is the cheapest airline that flies from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BLI to SEA flight.
How many flights per day from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
Each day on average, 3 nonstop flights operate from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA). Choose the departure date that best fits your schedule.
What are the most popular departure times for flights from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
Flights between BLI and SEA are their busiest at 5 AM. If you want a quieter trip and potentially cheaper prices, look for a time when demand is lower.
What day of the week has the most flights from BLI to SEA?
Friday has the most flights from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA). Consider taking off on this day and you'll have a greater chance of finding a departure that fits your schedule.
What is the earliest flight from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
The earliest flight taking off from Bellingham Intl. Airport (BLI) is at around 5:19AM UTC-8. Catch this flight and you'll touch down at Seattle - Tacoma Intl. Airport (SEA) at approximately 6:10AM UTC-8. The overall travel time is 51m.
How long does it take to fly from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
The average flight time from BLI to SEA is 50 minutes, covering a total distance of 95 mi.
What airline has the least delays from BLI to SEA?
With 95% of journeys usually arriving on time, American Airlines has the best on-time performance for nonstop flights from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA). To keep track of your flight status and receive notifications if anything changes, use the Expedia App.
What is the best time to fly from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
Book a flight from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Seattle from Bellingham Intl. Airport (BLI)?
Compare your flight options from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA). This is the only Seattle airport you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your departure to book a ticket from BLI to SEA generally means paying more. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans for a better chance of getting a bargain.
Is it cheaper to book a BLI to SEA flight and hotel package?
Booking a BLI to SEA flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Bellingham Intl. Airport (BLI) to Seattle - Tacoma Intl. Airport (SEA)?
If you booked your BLI to SEA flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

Travel information

0
Origin airport
Bellingham Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$132
Distance
94 mi

Book with confidence

Bellingham to Seattle Flights

The cheapest times to fly from Bellingham to Seattle

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 Bellingham to Seattle are during the month of January. You can find some of the cheapest flights from Bellingham to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Bellingham to Seattle

Sunday is one of the best days to book for cheap flights from Bellingham to Seattle: 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 Bellingham to Seattle

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 Bellingham to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $89 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 Bellingham to Seattle 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 Bellingham to Seattle 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.

 

Bellingham to Seattle Flights

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*Available to One Key members.