$149 Cheap Flights from San Diego (SAN) to Bellingham (BLI)

View $149 flight on Tue, Oct 21, 2025Opens in a new window

Popular airlines from San Diego Intl. Airport (SAN) to Bellingham, WA (BLI-Bellingham Intl.)

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Cheap Flights from San Diego to Bellingham (SAN-BLI)

Prices were available within the past 7 days and start at $149 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Sep 23 - Sat, Sep 27
SAN
San Diego
BLI
Bellingham
$238 Roundtrip, found 5 days ago
$238
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Sep 23 from San Diego to Bellingham, returning Sat, Sep 27, priced at $238 found 5 days ago
Alaska Airlines
Sat, Oct 18 - Sat, Oct 25
SAN
San Diego
BLI
Bellingham
$251 Roundtrip, found 5 days ago
$251
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Oct 18 from San Diego to Bellingham, returning Sat, Oct 25, priced at $251 found 5 days ago
Hawaiian Airlines
Wed, Sep 17 - Sat, Sep 20
SAN
San Diego
BLI
Bellingham
$258 Roundtrip, found 20 hours ago
$258
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Wed, Sep 17 from San Diego to Bellingham, returning Sat, Sep 20, priced at $258 found 20 hours ago
Hawaiian Airlines
Sat, Aug 30 - Fri, Sep 12
SAN
San Diego
BLI
Bellingham
$260 Roundtrip, found 6 days ago
$260
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Sat, Aug 30 from San Diego to Bellingham, returning Fri, Sep 12, priced at $260 found 6 days ago
Alaska Airlines
Wed, Oct 29 - Mon, Nov 10
SAN
San Diego
BLI
Bellingham
$261 Roundtrip, found 6 days ago
$261
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Oct 29 from San Diego to Bellingham, returning Mon, Nov 10, priced at $261 found 6 days ago
Alaska Airlines
Wed, Oct 15 - Tue, Oct 21
SAN
San Diego
BLI
Bellingham
$262 Roundtrip, found 13 hours ago
$262
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Wed, Oct 15 from San Diego to Bellingham, returning Tue, Oct 21, priced at $262 found 13 hours ago
Alaska Airlines
Sat, Nov 1 - Sat, Nov 8
SAN
San Diego
BLI
Bellingham
$264 Roundtrip, found 6 days ago
$264
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Nov 1 from San Diego to Bellingham, returning Sat, Nov 8, priced at $264 found 6 days ago
Alaska Airlines
Tue, Sep 23 - Sat, Sep 27
SAN
San Diego
BLI
Bellingham
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Sep 23 from San Diego to Bellingham, returning Sat, Sep 27, priced at $268 found 5 days ago
Alaska Airlines
Wed, Sep 17 - Fri, Sep 26
SAN
San Diego
BLI
Bellingham
$270 Roundtrip, found 20 hours ago
$270
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Wed, Sep 17 from San Diego to Bellingham, returning Fri, Sep 26, priced at $270 found 20 hours ago
American Airlines
Tue, Oct 14 - Sat, Oct 18
SAN
San Diego
BLI
Bellingham
$464 Roundtrip, found 2 days ago
$464
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Oct 14 from San Diego to Bellingham, returning Sat, Oct 18, priced at $464 found 2 days ago

Find the cheapest month to fly from San Diego (SAN) to Bellingham (BLI)

January is typically the cheapest month to fly

From $217 - $554 per traveler.

Graph displaying average flight prices per month

Alternative airports near Bellingham

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Abbotsford Intl. YXX. Cheapest option available. Average driving time to city center is 37 minutes. Flights from $361
YXX
Abbotsford Intl.
Cheapest
Average driving time to city center37 min
Flights from $361
Flights from San Diego (SAN) to Bellingham (BLI)
Origin airport
San Diego Intl.
Destination airport
Bellingham Intl.
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$238
Distance
1143 mi
Average flight time
2 hours 55 mins

San Diego to Bellingham Flights

The cheapest times to fly from San Diego to Bellingham

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Diego to Bellingham are during the month of September. You can find some of the cheapest flights from San Diego to Bellingham with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Diego to Bellingham

Sunday is one of the best days to book for cheap flights from San Diego to Bellingham: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Diego to Bellingham

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Diego to Bellingham in 2025. You can also book with separate airlines for your outbound and return journeys, from $149 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Diego to Bellingham flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Diego to Bellingham airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to Bellingham Intl. Airport (BLI) cost?
Discover the latest flight deals from SAN to BLI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SAN to BLI?
The cheapest flights from SAN to BLI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SAN to BLI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SAN to BLI. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from San Diego Intl. Airport (SAN) to Bellingham Intl. Airport (BLI)?
You'll need to book a flight with a layover if you're traveling from San Diego Intl. Airport (SAN) to Bellingham Intl. Airport (BLI). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SAN to BLI?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Diego Intl. Airport (SAN) to Bellingham Intl. Airport (BLI)?
To land at Bellingham Intl. Airport (BLI) without delays, opt for a flight that takes off from San Diego Intl. Airport (SAN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Bellingham from San Diego Intl. Airport (SAN)?
Snohomish County - Paine Field Airport (PAE) is the only airport in Bellingham with direct flights from San Diego Intl. Airport (SAN). Browse your options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to Bellingham Intl. Airport (BLI) last-minute?
Last-minute bookings from SAN to BLI are usually more expensive. To secure the cheapest rates, start looking for flights as soon as possible. That being said, if you can play around with your travel dates, it's possible to find a cheap fare right before you leave.
Is it cheaper to book a SAN to BLI flight and hotel package?
Securing a SAN to BLI flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our extensive range of hotels and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to Bellingham Intl. Airport (BLI)?
It's usually possible to cancel or reschedule your SAN to BLI flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.