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$88+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — SEA
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/1. 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.
Tue 12/308:05 amBLI - SEA
Nonstop0h 57mAlaska Airlines
Tue 1/69:27 pmSEA - BLI
Nonstop0h 55mAlaska Airlines
Deal found 12/1$208
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/184:06 pmBLI - SEA
Nonstop0h 55mAlaska Airlines
Mon 12/2211:20 pmSEA - BLI
Nonstop0h 56mAlaska Airlines
Deal found 12/3$238
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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.
Mon 12/151:04 pmBLI - SEA
Nonstop0h 58mAlaska Airlines
Fri 12/1911:20 pmSEA - BLI
Nonstop0h 56mAlaska Airlines
Deal found 12/2$278
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/101:04 pmBLI - SEA
Nonstop0h 58mAlaska Airlines
Wed 12/179:31 pmSEA - BLI
Nonstop1h 01mAlaska Airlines
Deal found 12/3$328
This American Airlines deal was found by Cheapflights users on 12/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:20 amBLI - SEA
Nonstop0h 56mAmerican Airlines
Tue 1/611:20 pmSEA - BLI
Nonstop0h 56mAmerican Airlines
Deal found 12/1$329
This American Airlines deal was found by Cheapflights users on 12/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:15 amBLI - SEA
Nonstop1h 06mAmerican Airlines
Wed 12/172:44 pmSEA - BLI
Nonstop0h 57mAmerican Airlines
Deal found 12/3$469
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:00 amBLI - SEA
1 stop15h 42mMultiple Airlines
Mon 12/221:25 pmSEA - BLI
2 stops32h 32mMultiple Airlines
Deal found 12/3$471
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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.
Thu 12/41:04 pmBLI - SEA
Nonstop0h 58mAlaska Airlines
Mon 12/89:31 pmSEA - BLI
Nonstop1h 01mAlaska Airlines
Deal found 12/2$478
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:20 amBLI - SEA
Nonstop0h 56mMultiple Airlines
Wed 12/3111:10 pmSEA - BLI
2 stops37h 02mMultiple Airlines
Deal found 12/3$499
This Kiwi.com deal was found by Cheapflights users on 12/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amBLI - SEA
1 stop29h 31mMultiple Airlines
Tue 12/236:00 amSEA - BLI
2 stops15h 57mMultiple Airlines
Deal found 12/4$549

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$138
(Alaska Airlines)

One-way from

$88
(Expedia)

Popular in

December

Cheapest in

February

Average price

$338

Good round-trip deal

$387 or less

Good one-way deal

$292 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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 4, 2025.
Use the filters below to find and compare flights from Bellingham to Seattle that are best for you.

Fly from

Bellingham

Fly to

Seattle

Route

Depart

Return

Price

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sun 1/25

1:03 pm-2:00 pm

Nonstop0h 57m

Seattle/Tacoma Intl

Sun 2/1

11:10 pm-12:06 am

Nonstop0h 56m

$138

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 1/2

5:20 am-6:16 am

Nonstop0h 56m

Seattle/Tacoma Intl

Mon 1/5

11:20 pm-12:16 am

Nonstop0h 56m

$168

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Mon 2/2

9:15 am-10:31 am

Nonstop1h 16m

Seattle/Tacoma Intl

Thu 2/5

8:22 pm-9:20 pm

Nonstop0h 58m

$178

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sun 1/25

7:30 am-11:56 am

1 stop28h 26m

Seattle/Tacoma Intl

Sun 2/1

9:25 pm-8:31 pm

1 stop23h 06m

$201

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sat 12/20

8:05 am-9:02 am

Nonstop0h 57m

Seattle/Tacoma Intl

Wed 12/31

11:20 pm-12:16 am

Nonstop0h 56m

$238

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Thu 12/18

4:06 pm-5:01 pm

Nonstop0h 55m

Seattle/Tacoma Intl

Mon 12/22

11:20 pm-12:16 am

Nonstop0h 56m

$238

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 12/19

12:56 pm-1:49 pm

Nonstop0h 53m

Seattle/Tacoma Intl

Tue 12/23

11:20 pm-12:16 am

Nonstop0h 56m

$238

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Mon 12/15

1:04 pm-2:02 pm

Nonstop0h 58m

Seattle/Tacoma Intl

Fri 12/19

11:20 pm-12:16 am

Nonstop0h 56m

$278

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sun 2/22

1:05 pm-9:34 am

1 stop20h 29m

Seattle/Tacoma Intl

Tue 3/24

5:31 pm-6:56 pm

2 stops25h 25m

$322

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Mon 2/2

9:15 am-10:31 am

Nonstop1h 16m

$88

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 20 results
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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bellingham-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 month to book a flight from Bellingham to Seattle?

Currently, November is the cheapest month in which you can book a flight from Bellingham to Seattle (average of $131). Flying from Bellingham to Seattle in July is currently the most expensive (average of $314). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 December 4, 2025.

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 December 4, 2025.
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
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Alaska Airlines
8.0
Very good
11,402 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.

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 14 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 52m.

  • How popular is this Bellingham to Seattle flight route?

    The Bellingham to Seattle/Tacoma Intl flight path was viewed by 24 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 57m. 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 47% 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 Horizon Air (92%), American Airlines (87%) and Japan Airlines (84%).

  • What are the cheapest flights from Bellingham to Seattle?

    Looking at all options, your cheapest flight can be booked for $128. While the most popular route (Bellingham - Seattle/Tacoma Intl) can be booked for $138 on average, our data indicates $416 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.

  • What is the cheapest month to book a flight from Bellingham to Seattle?

    Currently, November is the cheapest month in which you can book a flight from Bellingham to Seattle (average of $131). Flying from Bellingham to Seattle in July is currently the most expensive (average of $314). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$127Average$238FlexibilityNo cancel feeOn-time75%

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