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$134+ Cheap flights from Bellingham to Seattle (BLI - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — SEA
Apr 18 — Apr 251
Sat 4/18
Sat 4/25
1 adult, Economy
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Cheap flight deals from Bellingham to Seattle

Cheapest flights from Bellingham to Seattle
Explore the most affordable flight options available from Bellingham to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.

This Trip.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:19 pm
BLI
-
SEA
Nonstop0h 55m
Hawaiian Airlines
Sat 4/184:44 pm
SEA
-
BLI
Nonstop0h 55m
Hawaiian Airlines
Deal found 3/14$219
This Trip.com deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:19 pm
BLI
-
SEA
Nonstop0h 55m
Alaska Airlines
Sat 4/2511:24 am
SEA
-
BLI
Nonstop0h 56m
Alaska Airlines
Deal found 3/19$221
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:56 pm
BLI
-
SEA
Nonstop0h 54m
Alaska Airlines
Mon 4/2011:03 pm
SEA
-
BLI
Nonstop0h 56m
Alaska Airlines
Deal found 3/15$227
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:56 pm
BLI
-
SEA
Nonstop0h 54m
Alaska Airlines
Mon 4/2011:03 pm
SEA
-
BLI
Nonstop0h 56m
Alaska Airlines
Deal found 3/16$237
This Expedia deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:56 pm
BLI
-
SEA
Nonstop0h 54m
Alaska Airlines
Fri 4/246:30 pm
SEA
-
BLI
1 stop4h 12m
Alaska Airlines
Deal found 3/15$257
This Expedia deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:01 pm
BLI
-
SEA
1 stop2h 35m
Alaska Airlines
Tue 5/2611:10 pm
SEA
-
BLI
Nonstop0h 57m
Alaska Airlines
Deal found 3/17$275
This Alaska Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:55 am
BLI
-
SEA
1 stop22h 07m
Alaska Airlines
Sat 5/234:18 pm
SEA
-
BLI
Nonstop0h 55m
Alaska Airlines
Deal found 3/18$291
This Expedia deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:55 am
BLI
-
SEA
1 stop2h 47m
Alaska Airlines
Sat 5/2311:10 pm
SEA
-
BLI
Nonstop0h 57m
Alaska Airlines
Deal found 3/18$307

Find flight deals from Bellingham to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bellingham (BLI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$219
(Trip.com)

One-way from

$134
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$328

Good round-trip deal

$428 or less

Good one-way deal

$221 or less
Provider with most accurate pricing for Bellingham-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bellingham-Seattle/Tacoma Intl flights.
Search Deals
From Bellingham to Seattle/Tacoma Intl
Search Deals
One-way flight from Bellingham to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Bellingham to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Bellingham to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bellingham to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 19, 2026.
Use the filters below to find and compare flights from Bellingham to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 4/17

12:56 pm-1:50 pm

Nonstop0h 54m

Seattle/Tacoma Intl

Fri 4/24

5:42 pm-6:39 pm

Nonstop0h 57m

$227

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sat 4/18

6:19 pm-7:14 pm

Nonstop0h 55m

Seattle/Tacoma Intl

Mon 4/20

11:03 pm-11:59 pm

Nonstop0h 56m

$227
Quickest round-trip

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Mon 4/13

12:56 pm-1:50 pm

Nonstop0h 54m

Seattle/Tacoma Intl

Mon 4/20

11:03 pm-11:59 pm

Nonstop0h 56m

$237

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Tue 3/31

6:19 pm-7:14 pm

Nonstop0h 55m

Seattle/Tacoma Intl

Sat 4/4

4:44 pm-5:39 pm

Nonstop0h 55m

$327

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 4/3

6:19 pm-7:14 pm

Nonstop0h 55m

Seattle/Tacoma Intl

Tue 4/7

11:20 am-12:16 pm

Nonstop0h 56m

$327
Cheapest one-way

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sat 5/2

7:19 pm-8:17 pm

Nonstop0h 58m

$134

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Thu 4/30

1:00 pm-1:56 pm

Nonstop0h 56m

$134

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sun 8/30

6:25 pm-7:22 pm

Nonstop0h 57m

$134

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Thu 5/21

2:00 pm-2:55 pm

Nonstop0h 55m

$134
Quickest one-way

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Mon 4/13

12:56 pm-1:50 pm

Nonstop0h 54m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Compare providers for flights from Bellingham to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bellingham to Seattle in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Bellingham-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bellingham-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bellingham-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bellingham-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bellingham-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Bellingham to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Bellingham with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Bellingham to Seattle

What is the cheapest time of day to fly from BLI to SEA?

Find hourly flight availability from Bellingham to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 19, 2026.

When flying from Bellingham to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated March 19, 2026.
Read reviews from past customers who have flown Alaska Airlines from Bellingham to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,072 reviews

Comfort

7.8

Food

7.0

Crew

8.5

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
7.9
Good
12,072 reviews
Alaska Airlines
7.9
Good
12,072 reviews

Comfort

7.8

Food

7.0

Crew

8.5

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

Find useful and relevant information for your journey from Bellingham to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Bellingham to Seattle?

    You will need to book a flight from Bellingham to Seattle/Tacoma Intl if you want to fly from Bellingham to Seattle. At least 1 airline has flights from Bellingham (BLI) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 9 flights to Seattle from the Bellingham airport per day. If you manage to book one that is nonstop, then you can expect the flight time from BLI to SEA to be around 0h 55m.

  • How popular is this Bellingham to Seattle flight route?

    The Bellingham to Seattle/Tacoma Intl flight path was viewed by 19 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Bellingham to Seattle?

    There are many flights that can get you from Bellingham to Seattle in 54m. Fly via Alaska Airlines to get the fastest option. The distance between Bellingham and Seattle is about 93 mi. All flights are typically nonstop.

  • What is the cheapest airline to fly from Bellingham to Seattle round-trip?

    Our cheapest airline available from Bellingham to Seattle is Alaska Airlines. Our recent data shows that you can find tickets from as low as $127 on this airline. You may be able to fly from Bellingham to Seattle for 51% less than the average price by searching for this airline.

  • What are the most reliable airlines from Bellingham to Seattle?

    The top 3 most reliable airlines when flying from Bellingham to Seattle are SkyWest Airlines (83%), Alaska Airlines (83%) and Qatar Airways (82%).

  • What are the cheapest flights from Bellingham to Seattle?

    Looking at all options, your cheapest flight can be booked for $138. While the most popular route (Bellingham - Seattle/Tacoma Intl) can be booked for $227 on average, our data indicates $423 when flying from Bellingham to Seattle.

  • Can I find deals for flights from Bellingham to Seattle that include hotel bookings?

    Yes. In addition to deals on Bellingham to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bellingham to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bellingham to Seattle.

  • Can I find deals for business class flights from Bellingham to Seattle?

    Yes. Cheapflights offers flight deals from Bellingham to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Ellensburg
Tukwila
Fife
Lakewood
Aberdeen
Shoreline
Marysville
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Bellingham to Seattle

Discover the top airline that operate flights from Bellingham to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$127Average$258FlexibilityNo cancel feeOn-time75%

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