BLI - SEA

$129 Find Cheap Flights from Bellingham to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bellingham to Seattle departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bellingham to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bellingham to Seattle, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$197
Typical prices: $277-$343
Alaska Airlines
Sat 10/24Tue 10/27
BLI - SEA • Non-stop
Cheapest one-way
$129
Typical prices: $132-$230
Alaska Airlines
Tue 9/15
BLI - SEA • Non-stop
Nonstop flights
You can fly direct with Alaska Airlines. Average duration is 0h 56m
Direct flights
Direct flights
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Direct flights
Direct flights
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When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
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Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Bellingham to Seattle (BLI-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bellingham to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bellingham to Seattle

Sat, Oct 24 - Tue, Oct 27
Alaska Airlines Logo
7:18 pm - 8:16 pm
BLI
-
SEA
0h 58mnonstop
Alaska Airlines Logo
5:40 pm - 6:38 pm
SEA
-
BLI
0h 58mnonstop
$197Alaska Airlines
Tue, Sep 8 - Tue, Sep 22
Alaska Airlines Logo
7:26 pm - 8:25 pm
BLI
-
SEA
0h 59mnonstop
Alaska Airlines Logo
5:47 pm - 6:46 pm
SEA
-
BLI
0h 59mnonstop
$207Alaska Airlines
Thu, Jul 23 - Sat, Jul 25
Alaska Airlines Logo
5:26 pm - 6:25 pm
BLI
-
SEA
0h 59mnonstop
Alaska Airlines Logo
3:50 pm - 4:46 pm
SEA
-
BLI
0h 56mnonstop
$237Alaska Airlines
Thu, Jul 23 - Sun, Jul 26
Alaska Airlines Logo
1:49 pm - 2:46 pm
BLI
-
SEA
0h 57mnonstop
Alaska Airlines Logo
12:05 pm - 1:09 pm
SEA
-
BLI
1h 04mnonstop
$247Alaska Airlines
Sat, Oct 24 - Tue, Oct 27
Alaska Airlines Logo
8:20 am - 12:05 pm
BLI
-
SEA
3h 45m
1 stop
Alaska Airlines Logo
10:59 pm - 11:53 pm
SEA
-
BLI
0h 54mnonstop
$257Alaska Airlines
Thu, Jul 16 - Wed, Jul 22
Alaska Airlines Logo
5:26 pm - 6:25 pm
BLI
-
SEA
0h 59mnonstop
Alaska Airlines Logo
11:01 pm - 11:59 pm
SEA
-
BLI
0h 58mnonstop
$267Alaska Airlines
Thu, Aug 20 - Thu, Aug 20
Alaska Airlines Logo
7:19 pm - 8:18 pm
BLI
-
SEA
0h 59mnonstop
Alaska Airlines Logo
11:00 pm - 11:59 pm
SEA
-
BLI
0h 59mnonstop
$272Alaska Airlines
Fri, Oct 16 - Sat, Oct 17
Alaska Airlines Logo
8:20 am - 9:10 am
BLI
-
SEA
24h 50m
1 stop
Alaska Airlines Logo
12:32 pm - 1:29 pm
SEA
-
BLI
0h 57mnonstop
$277Alaska Airlines
Tue, Jul 7 - Tue, Jul 14
Alaska Airlines Logo
5:26 pm - 6:25 pm
BLI
-
SEA
0h 59mnonstop
Alaska Airlines Logo
3:50 pm - 4:46 pm
SEA
-
BLI
0h 56mnonstop
$312Alaska Airlines
Tue, Sep 8 - Tue, Sep 22
Alaska Airlines Logo
7:00 am - 12:50 pm
BLI
-
SEA
5h 50m
1 stop
Alaska Airlines Logo
6:51 pm - 10:31 pm
SEA
-
BLI
3h 40m
1 stop
$317Alaska Airlines
Booking Insights

KAYAK's insights & trends for Bellingham to Seattle flights

Get data-powered insights and trends into flights from Bellingham to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Bellingham to Seattle?

The average price of all round-trip flights from Bellingham to Seattle clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Seattle on a Wednesday and more expensive on a Monday. On your return trip to Bellingham, you should consider flying back on a Tuesday, and avoid Wednesdays for better deals.

What is the cheapest month to fly from Bellingham to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bellingham to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Bellingham to Seattle is February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $518 and $447 respectively.

Expert advice

Expert advice for your flight from Bellingham to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Lucas Aykroyd

Lucas Aykroyd

Expert on BLI

Lucas Aykroyd is an award-winning travel writer based in Vancouver (YVR). His favorite adventures include tracking polar bears in Nunavut and rafting over a waterfall in New Zealand. Lucas has written for the in-flight magazines of Delta, SAS, and Porter Airlines. He is also a National Geographic and Toronto Star contributor.

Good to know

Low seasonSeptember
Cheapest flight$129
Best time to beat the crowds with an average 53% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Bellingham to Seattle

When to book flights from Bellingham to Seattle

Are your dates flexible? Find out the best times to travel from Bellingham to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Bellingham to Seattle

  • What is the cheapest flight from Bellingham to Seattle?

    In the last 5 days, the lowest price for a flight from Bellingham to Seattle was $129 for a one-way ticket and $197 for a round-trip.

  • Do I need a passport to fly between Bellingham and Seattle?

    No, a passport isn't needed to fly from Bellingham to Seattle. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Bellingham to Seattle?

    Alaska Airlines, American Airlines, and Delta offer inflight Wi-Fi service on the Bellingham to Seattle flight route.

  • Which aircraft models fly most regularly from Bellingham to Seattle?

    The Embraer 175 is the aircraft model that flies most regularly on the Bellingham to Seattle flight route.

  • Which airline alliances offer flights from Bellingham to Seattle?

    oneworld is the only airline alliance operating flights between Bellingham and Seattle.

  • On which days can I fly direct from Bellingham to Seattle?

    There are nonstop flights from Bellingham to Seattle on a daily basis.

  • How does KAYAK find such low prices on flights from Bellingham to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Bellingham to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Bellingham to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Bellingham is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Bellingham to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Bellingham with another airline. Booking your flights between Bellingham and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Bellingham to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Bellingham up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Bellingham to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $267 or less one-way and $488 or less round-trip.

Prefer to fly direct from Bellingham to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Bellingham to Seattle/Tacoma Intl.
Find which airlines fly direct from Bellingham Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Bellingham to Seattle/Tacoma Intl

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

Seattle/Tacoma Intl to Bellingham

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Reviews of the top airline flying from Bellingham to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Bellingham to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bellingham to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12551 reviews
7.8Comfort
8.5Crew
8.1Boarding
7.1Food
7.0Entertainment
Airline reviews

there was no entertainment available and only water/coffee/juice/soda

8.0 ExcellentAnonymous, Jun 2026
PHX - SEA
Read more Alaska Airlines reviews

there was no entertainment available and only water/coffee/juice/soda

Subject: Formal Complaint – Incompetent Service and Denied Boarding on Flight 1409 (CLSVJM – Dear Alaska Airlines Customer Relations, I am writing to file a formal complaint regarding my experience on Flight 1409 departing from Seattle on 6/13/26. As a physician and business owner who frequently coordinates group travel, this was one of the worst airline experiences I have encountered. Upon arrival, I was informed that my check-in boarding pass was not official, despite successfully obtaining it electronically through your website/app with no warnings or indications of issues. My electronic boarding pass was rejected, leading to cancellation/denial of boarding. The gate agent (an older woman) was unhelpful, claimed my name had been announced multiple times (which it had not—she did not even know my name correctly), and mistakenly boarded my traveling companion under my name. Additionally, an older blonde staff member nearly failed to return my passport, highlighting a clear lack of training on your check-in and boarding systems. This chaos forced me onto a later flight while my group waited in Canada, unable to check into our Airbnb or pick up rental cars (as I was the primary booker). The entire incident caused significant business disruption, stress, and additional expenses. I have flown Alaska Airlines previously but will not consider it again without resolution. I request: • Full reimbursement of any additional costs incurred. • Appropriate compensation (vouchers/miles) for the inconvenience and poor service. • Confirmation of corrective actions for Please respond within 7-10 business days. Sincerely, Dr. Chunwen Teng

Never had so many staff members be rude and disrespectful. I had a staff member sarcastically call me “girly” after making me wait 20 minutes to be seen by her. I was able to print my luggage tag and she told me I was too late to check luggage I said the system obviously disagrees. And you had me wait way too long while you asked every single passenger ahead of me about their Disney vacations. She wasted so much time to then say “girly your bag won’t make it on the plane” I’m not her girly I’m a full grown adult. She needs to learn a hell of a lot of respect

The agents were super helpful. I was traveling with my mother inlaw who needed whell chair assisstance. The help and accomodation from the checkin crew, to the boarding crew and inflight crew was excellent.

Completely full flight. Boarding was smooth, but people didn’t listen about use of overhead bins which is typical. We pre-purchased a snack which was tasty. Drinks were good and plentiful. Flight left late because previous flight was delayed.

Eva Airlines attendants were wonderful. I really enjoyed the hot meals. They always greeted me with a warm smile. I'm looking forward to flying back to the USA with them again!

Flight maintenance was on so that flight didn’t go able to fly out to Seattle and Inhad to get another flight,,

3 of the 4 legs of our trip the crews were awesome! 1 leg the trip attendants were rude & dismissive, didn't even greet us when boarding even though both myself & my husband said hello directly to them when we boarded.

Well organized boarding. Cabin crew were efficient and professional. Thoroughly enjoyed the flight.

The first flight was fine, great crew, but the plane was delayed 45 minutes to go to Seattle because of they were missing a ramp. That would make sense if the plane was actually at the gate. Not if we’re still waiting for a plane. After we landed we waited 30-45 minutes on the tarmac just to get off the plane. Alaska made me miss my connecting flight, wasting my time, and my money. I should honestly be reimbursed, but hey, when does the airline ever actually take accountability? Never.

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

Information on your arrival and departure airports

Compare transportation modes for Bellingham to Seattle

Transportation modeAverage priceAverage duration
Flights$8980h 57m
Buses$452h 20m