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$109+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$148
(Alaska Airlines)

One-way from

$109
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$317

Good round-trip deal

$405 or less

Good one-way deal

$192 or less
From Bellingham to Seattle/Tacoma Intl
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One-way flight from Bellingham to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 6% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Bellingham to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Bellingham to Seattle/Tacoma Intl.
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Find 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 10/154:14 pmBLI - SEA
Nonstop0h 57mAlaska Airlines
Sun 11/22:36 pmSEA - BLI
Nonstop0h 55mAlaska Airlines
Deal found 6/11$148
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/308:05 amBLI - SEA
Nonstop1h 00mHawaiian Airlines
Mon 8/1811:05 pmSEA - BLI
Nonstop0h 54mHawaiian Airlines
Deal found 6/11$191
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/106:00 amBLI - SEA
1 stop10h 25mMultiple Airlines
Thu 7/175:30 pmSEA - BLI
1 stop26h 40mMultiple Airlines
Deal found 6/11$229

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 June 12, 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

Wed 10/15

4:14 pm-5:11 pm

Nonstop0h 57m

Seattle/Tacoma Intl

Sun 11/2

2:36 pm-3:31 pm

Nonstop0h 55m

$148

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Wed 7/30

8:05 am-9:05 am

Nonstop1h 00m

Seattle/Tacoma Intl

Mon 8/18

11:05 pm-11:59 pm

Nonstop0h 54m

$191

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Thu 7/10

6:00 am-4:25 pm

1 stop10h 25m

Seattle/Tacoma Intl

Thu 7/17

5:30 pm-8:10 pm

1 stop26h 40m

$229

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 8/8

12:56 pm-1:51 pm

Nonstop0h 55m

$109

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 8/8

9:00 pm-4:25 pm

1 stop19h 25m

$111

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Mon 8/18

8:05 am-9:05 am

Nonstop1h 00m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, January is the cheapest month in which you can book a flight from Bellingham to Seattle (average of $238). Flying from Bellingham to Seattle in July is currently the most expensive (average of $391). 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 June 12, 2025.

When flying from Bellingham to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 27% versus a flight in the morning.

Weekly flight availability from Bellingham to Seattle

Explore weekly flight availability from Bellingham to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from BLI to SEA are scheduled on a Monday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 13 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 16 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying 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 $148 on this airline. An additional option worth looking into is Hawaiian Airlines, starting at $191. You may be able to fly from Bellingham to Seattle for 45% less than the average price by searching for these airlines.

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

    The top 3 most reliable airlines when flying from Bellingham to Seattle are American Airlines (86%), Japan Airlines (82%) and SkyWest Airlines (82%).

  • What are the cheapest flights from Bellingham to Seattle?

    Looking at all options, your cheapest flight can be booked for $143. While the most popular route (Bellingham - Seattle/Tacoma Intl) can be booked for $148 on average our data indicates $699 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, January is the cheapest month in which you can book a flight from Bellingham to Seattle (average of $238). Flying from Bellingham to Seattle in July is currently the most expensive (average of $391). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$147Average$293FlexibilityNo cancel feeOn-time75%

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