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Cheap flights from Bellingham to Seattle from C$ 173

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — SEA
23 Aug — 30 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Bellingham to Seattle

Enter your travel dates to find the best prices.

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 24 July 2026.

Fri 21/87:19 p.m.
BLI
-
SEA
Nonstop0h 59m
Alaska Airlines
Fri 28/811:00 p.m.
SEA
-
BLI
Nonstop0h 59m
Alaska Airlines
Deal found 24/7C$ 348
Sun 16/81:49 p.m.
BLI
-
SEA
Nonstop0h 57m
Alaska Airlines
Sun 23/85:40 p.m.
SEA
-
BLI
Nonstop0h 59m
Alaska Airlines
Deal found 22/7C$ 397
Tue 11/85:26 p.m.
BLI
-
SEA
Nonstop0h 59m
Alaska Airlines
Tue 18/83:50 p.m.
SEA
-
BLI
Nonstop0h 56m
Alaska Airlines
Deal found 21/7C$ 411
Mon 24/87:19 p.m.
BLI
-
SEA
Nonstop0h 59m
Alaska Airlines
Thu 27/811:00 p.m.
SEA
-
BLI
Nonstop0h 59m
Alaska Airlines
Deal found 21/7C$ 446
Thu 6/85:26 p.m.
BLI
-
SEA
Nonstop0h 59m
Alaska Airlines
Sun 9/811:01 p.m.
SEA
-
BLI
Nonstop0h 58m
Alaska Airlines
Deal found 19/7C$ 496
Thu 13/81:49 p.m.
BLI
-
SEA
Nonstop0h 57m
Alaska Airlines
Thu 20/89:59 p.m.
SEA
-
BLI
1 stop24h 32m
Alaska Airlines
Deal found 19/7C$ 507
Thu 6/85:26 p.m.
BLI
-
SEA
Nonstop0h 59m
Alaska Airlines
Mon 10/86:59 p.m.
SEA
-
BLI
1 stop3h 31m
Alaska Airlines
Deal found 20/7C$ 517

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 24 July 2026.

Round-trip from

C$ 348

One-way from

C$ 173

Popular in

December

Cheapest in

September

Average price

C$ 397

Good round-trip deal

C$ 545 or less
Alaska Airlines
  • Alaska Airlines
  • 21/8-28/8
  • Nonstop
  • 1h 58m total
  • Bellingham to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 19/9
  • 1 total stop
  • 4h 58m total
  • Bellingham to Seattle
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip 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 629,999 searches. Data last updated 24 July 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

Sun 16/8

1:49 p.m.-2:46 p.m.

Nonstop0h 57m

Seattle/Tacoma Intl

Sun 23/8

5:40 p.m.-6:39 p.m.

Nonstop0h 59m

C$ 397

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 21/8

7:19 p.m.-8:18 p.m.

Nonstop0h 59m

Seattle/Tacoma Intl

Fri 28/8

6:51 p.m.-10:31 p.m.

1 stop3h 40m

C$ 418

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Mon 24/8

7:19 p.m.-8:18 p.m.

Nonstop0h 59m

Seattle/Tacoma Intl

Thu 27/8

11:00 p.m.-11:59 p.m.

Nonstop0h 59m

C$ 446

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Fri 14/8

5:26 p.m.-6:25 p.m.

Nonstop0h 59m

Seattle/Tacoma Intl

Fri 14/8

9:28 p.m.-10:30 p.m.

1 stop25h 02m

C$ 531
Quickest round-trip

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sun 16/8

1:49 p.m.-2:46 p.m.

Nonstop0h 57m

Seattle/Tacoma Intl

Sun 16/8

3:50 p.m.-4:46 p.m.

Nonstop0h 56m

C$ 573

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Tue 11/8

5:26 p.m.-6:25 p.m.

Nonstop0h 59m

Seattle/Tacoma Intl

Tue 18/8

10:40 p.m.-10:31 p.m.

2 stops23h 51m

C$ 608

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Thu 6/8

5:26 p.m.-6:25 p.m.

Nonstop0h 59m

Seattle/Tacoma Intl

Sun 9/8

3:50 p.m.-4:46 p.m.

Nonstop0h 56m

C$ 622
Cheapest one-way

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sat 19/9

7:00 a.m.-11:58 a.m.

1 stop4h 58m

C$ 173
Quickest one-way

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Sat 5/9

7:19 p.m.-8:18 p.m.

Nonstop0h 59m

C$ 182

BellinghamSeattle

BLI - SEA

BLISEA

Bellingham

Tue 18/8

5:26 p.m.-6:25 p.m.

Nonstop0h 59m

C$ 204

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/7

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 24 July 2026.

It’s optimal to fly from Bellingham to Seattle in the afternoon. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Bellingham to Seattle?

Airfare is below average for this route at the moment.

Bellingham to Seattle flights typically cost between C$ 366 and C$ 437 in August.
The cheapest round-trip price found within the last 5 days was C$ 348 on Alaska Airlines (21 Aug-28 Aug).

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.

  • How popular is this Bellingham to Seattle flight route?

    Within the past month, 57 users have taken a look at flights from Bellingham to Seattle/Tacoma Intl.

  • How long is the flight from Bellingham to Seattle?

    A quick flight from Bellingham to Seattle can take about 57m. Alaska Airlines provides one of the quickest options available for as low as C$ 397. The distance from Bellingham to Seattle is about 150 km. Generally, flights for this route are direct.

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

    Consider American Airlines (90%), Japan Airlines (90%) or Qatar Airways (82%) when booking your flight. These represent the most reliable airlines when flying from Bellingham to Seattle.

  • What are the cheapest flights from Bellingham to Seattle?

    Looking at all options, your cheapest flight can be booked for C$ 397. While the most popular route (Bellingham - Seattle/Tacoma Intl) can be booked for C$ 700 on average, our data indicates C$ 650 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Leavenworth
Mukilteo
Tacoma
Renton
Cashmere
Lynnwood
Ellensburg
Tukwila
Olympia
Marysville
Federal Way
Kirkland

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When you search for this flight from Bellingham to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Bellingham to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from Bellingham to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Bellingham to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Bellingham to Seattle, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Bellingham to Seattle become cheaper?

Yes, Cheapflights offers price alerts on Bellingham to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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