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$138+ Cheap flights from Seattle to Bellingham (SEA - BLI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLI
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from Seattle to Bellingham

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bellingham (BLI). 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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$138
(Alaska Airlines)

Popular in

May

Cheapest in

January

Average price

$217

Good round-trip deal

$137 or less

Good one-way deal

$174 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Bellingham flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Bellingham flights.
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From Seattle/Tacoma Intl to Bellingham
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Bellingham.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Bellingham.
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Find flight deals from Seattle to Bellingham

Cheapest flights from Seattle to Bellingham
Explore the most affordable flight options available from Seattle to Bellingham. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 12/611:10 pmSEA - BLI
Nonstop0h 56mAlaska Airlines
Sun 12/71:04 pmBLI - SEA
Nonstop0h 58mAlaska Airlines
Deal found 11/1$158
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Sun 12/2111:20 pmSEA - BLI
Nonstop0h 56mAlaska Airlines
Thu 12/2512:56 pmBLI - SEA
Nonstop0h 53mAlaska Airlines
Deal found 11/2$188
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:43 amSEA - BLI
1 stop21h 03mMultiple Airlines
Thu 11/207:30 amBLI - SEA
1 stop29h 52mMultiple Airlines
Deal found 11/1$209
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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 11/1411:10 amSEA - BLI
Nonstop1h 01mAlaska Airlines
Mon 11/174:04 pmBLI - SEA
Nonstop0h 56mAlaska Airlines
Deal found 10/31$238
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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.
Sun 11/168:30 pmSEA - BLI
Nonstop0h 50mAlaska Airlines
Thu 11/2012:51 pmBLI - SEA
Nonstop0h 56mAlaska Airlines
Deal found 11/1$278
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Sat 11/1511:10 pmSEA - BLI
Nonstop0h 56mAlaska Airlines
Mon 11/1712:51 pmBLI - SEA
Nonstop0h 56mAlaska Airlines
Deal found 11/3$328
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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 11/2511:37 amSEA - BLI
Nonstop1h 01mAlaska Airlines
Mon 12/11:16 pmBLI - SEA
Nonstop0h 59mAlaska Airlines
Deal found 11/1$378
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:05 pmSEA - BLI
1 stop18h 07mMultiple Airlines
Thu 12/2512:00 pmBLI - SEA
1 stop22h 11mMultiple Airlines
Deal found 11/2$429
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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 11/1711:10 amSEA - BLI
Nonstop1h 01mAlaska Airlines
Fri 11/215:12 pmBLI - SEA
Nonstop0h 59mAlaska Airlines
Deal found 11/2$438
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:44 pmSEA - BLI
Nonstop0h 57mMultiple Airlines
Tue 12/237:30 amBLI - SEA
2 stops23h 37mMultiple Airlines
Deal found 11/1$465

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Bellingham 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 November 3, 2025.
Use the filters below to find and compare flights from Seattle to Bellingham that are best for you.

Fly from

Seattle

Fly to

Bellingham

Route

Depart

Return

Price

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Thu 1/22

11:10 pm-12:06 am

Nonstop0h 56m

Bellingham

Mon 1/26

1:03 pm-2:00 pm

Nonstop0h 57m

$138

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Sat 12/6

11:10 pm-12:06 am

Nonstop0h 56m

Bellingham

Sun 12/7

1:04 pm-2:02 pm

Nonstop0h 58m

$158

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Sun 12/21

11:20 pm-12:16 am

Nonstop0h 56m

Bellingham

Thu 12/25

12:56 pm-1:49 pm

Nonstop0h 53m

$188

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Sun 11/16

11:43 am-8:46 am

1 stop21h 03m

Bellingham

Thu 11/20

7:30 am-1:22 pm

1 stop29h 52m

$209

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Tue 11/18

11:10 am-12:11 pm

Nonstop1h 01m

Bellingham

Sat 11/22

5:15 am-6:19 am

Nonstop1h 04m

$238

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Fri 11/14

11:10 am-12:11 pm

Nonstop1h 01m

Bellingham

Mon 11/17

4:04 pm-5:00 pm

Nonstop0h 56m

$238

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Tue 12/16

11:10 pm-12:06 am

Nonstop0h 56m

Bellingham

Tue 12/23

12:56 pm-1:49 pm

Nonstop0h 53m

$238

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Sun 11/16

8:30 pm-9:20 pm

Nonstop0h 50m

Bellingham

Thu 11/20

12:51 pm-1:47 pm

Nonstop0h 56m

$278

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Thu 1/22

11:25 am-12:23 pm

Nonstop0h 58m

Bellingham

Mon 1/26

10:00 am-7:15 am

2 stops21h 15m

$337

SeattleBellingham

SEA - BLI

SEABLI

Seattle/Tacoma Intl

Tue 11/25

11:37 am-12:38 pm

Nonstop1h 01m

Bellingham

Mon 12/1

1:16 pm-2:15 pm

Nonstop0h 59m

$378

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 20 results
1
2

Compare providers for flights from Seattle to Bellingham

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 Seattle to Bellingham in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 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 Seattle-Bellingham flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Bellingham flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Bellingham flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Bellingham 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 Seattle-Bellingham 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 Seattle to Bellingham

Have a flexible travel schedule? Discover the best time to fly to Bellingham from Seattle 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 Seattle to Bellingham

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

Currently, October is the cheapest month in which you can book a flight from Seattle to Bellingham (average of $122). Flying from Seattle to Bellingham in March is currently the most expensive (average of $228). 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 SEA to BLI?

Find hourly flight availability from Seattle to Bellingham. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

It’s optimal to fly from Seattle to Bellingham at noon. By choosing this option you can save up to 38% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Bellingham

Get insights into the airlines that provide service to Bellingham. 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 Bellingham. Reviews last updated November 3, 2025.
Read reviews from past customers who have flown Alaska Airlines from Seattle to Bellingham. 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
11,236 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,236 reviews
Alaska Airlines
8.0
Very good
11,236 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bellingham. 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 Seattle to Bellingham?

    Booking a flight from Seattle/Tacoma Intl (SEA) to Bellingham (BLI) is your only option if you wish to fly from Seattle to Bellingham. On a typical day, there are 13 flights from Seattle/Tacoma Intl to Bellingham, all of which are around 0h 50m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from Seattle/Tacoma Intl to Bellingham.

  • How popular is this Seattle to Bellingham flight route?

    The Seattle/Tacoma Intl to Bellingham flight path was viewed by 1 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 Seattle to Bellingham?

    There are many flights that can get you from Seattle to Bellingham in 56m. Fly via Alaska Airlines to get the fastest option. There are 93 mi between Seattle and Bellingham. Generally, flights for this route are nonstop.

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

    Alaska Airlines, at $137, was found to be the cheapest airline from Seattle to Bellingham.. Users have found that Alaska Airlines is 38% cheaper than the other options available to this destination.

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

    Consider American Airlines (94%), Qatar Airways (91%) or Hawaiian Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Bellingham.

  • What are the cheapest flights from Seattle to Bellingham?

    On average you can expect to pay $225 for a flight from Seattle to Bellingham. The cheapest flight overall is $88 while the most popular route, (Seattle/Tacoma Intl - Bellingham) is currently priced at $138.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Bellingham 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 Seattle to Bellingham?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Bellingham (average of $122). Flying from Seattle to Bellingham in March is currently the most expensive (average of $228). 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 Bellingham?

Book flights to Bellingham if you plan to visit one of these locations
Mount Vernon
Burlington
Ferndale
Blaine

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Top airline flying from Seattle to Bellingham

Discover the top airline that operate flights from Seattle to Bellingham. 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$137Average$217FlexibilityNo cancel feeOn-time75%

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