$167 Cheap Flights from Santa Rosa (STS) to Bellingham (BLI)

View $167 flight on Thu, Feb 5, 2026Opens in a new window

Popular airlines from Santa Rosa, CA (STS-Sonoma County) to Bellingham, WA (BLI-Bellingham Intl.)

Cheap Flights from Santa Rosa to Bellingham (STS-BLI)

Prices were available within the past 7 days and start at $167 for one-way flights and $258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Dec 3 - Tue, Dec 9
STS
Santa Rosa
BLI
Bellingham
$258 Roundtrip, found 10 hours ago
$258
Roundtrip
found 10 hours ago
Select Hawaiian Airlines flight, departing Wed, Dec 3 from Santa Rosa to Bellingham, returning Tue, Dec 9, priced at $258 found 10 hours ago
Hawaiian Airlines
Wed, Dec 3 - Mon, Dec 8
STS
Santa Rosa
BLI
Bellingham
$271 Roundtrip, found 10 hours ago
$271
Roundtrip
found 10 hours ago
Select Hawaiian Airlines flight, departing Wed, Dec 3 from Santa Rosa to Bellingham, returning Mon, Dec 8, priced at $271 found 10 hours ago
Hawaiian Airlines
Wed, Dec 3 - Sat, Dec 6
STS
Santa Rosa
BLI
Bellingham
$280 Roundtrip, found 10 hours ago
$280
Roundtrip
found 10 hours ago
Select Hawaiian Airlines flight, departing Wed, Dec 3 from Santa Rosa to Bellingham, returning Sat, Dec 6, priced at $280 found 10 hours ago
Hawaiian Airlines
Thu, Dec 4 - Tue, Dec 9
STS
Santa Rosa
BLI
Bellingham
$281 Roundtrip, found 10 hours ago
$281
Roundtrip
found 10 hours ago
Select Hawaiian Airlines flight, departing Thu, Dec 4 from Santa Rosa to Bellingham, returning Tue, Dec 9, priced at $281 found 10 hours ago
Hawaiian Airlines
Sat, Jan 10 - Sat, Jan 24
STS
Santa Rosa
BLI
Bellingham
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Jan 10 from Santa Rosa to Bellingham, returning Sat, Jan 24, priced at $282 found 1 day ago
Alaska Airlines
Fri, Feb 6 - Mon, Feb 9
STS
Santa Rosa
BLI
Bellingham
$283 Roundtrip, found 2 days ago
$283
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Feb 6 from Santa Rosa to Bellingham, returning Mon, Feb 9, priced at $283 found 2 days ago
Alaska Airlines
Sat, Dec 6 - Tue, Dec 9
STS
Santa Rosa
BLI
Bellingham
$286 Roundtrip, found 3 days ago
$286
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Santa Rosa to Bellingham, returning Tue, Dec 9, priced at $286 found 3 days ago
Hawaiian Airlines
Sat, Jan 17 - Sat, Jan 31
STS
Santa Rosa
BLI
Bellingham
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Jan 17 from Santa Rosa to Bellingham, returning Sat, Jan 31, priced at $288 found 1 day ago
Hawaiian Airlines
Sat, Jan 17 - Sun, Feb 1
STS
Santa Rosa
BLI
Bellingham
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Jan 17 from Santa Rosa to Bellingham, returning Sun, Feb 1, priced at $288 found 1 day ago
American Airlines
Fri, Jan 16 - Mon, Jan 19
STS
Santa Rosa
BLI
Bellingham
$562 Roundtrip, found 2 days ago
$562
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Jan 16 from Santa Rosa to Bellingham, returning Mon, Jan 19, priced at $562 found 2 days ago

Alternative airports near Bellingham

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

Select flight to Bellingham Intl. BLI. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $418
BLI
Bellingham Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $418

Frequently asked questions

How much does a flight from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI) cost?
Get a cheap one-way flight from $167 or cheap return flight from $258 from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI)?
December is the most affordable month to fly from STS to BLI. Traveling during an off-peak travel window is often the key to landing a great deal.
What is the cheapest airline that flies from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest STS to BLI flight.
How many flights per day from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI)?
Direct flights from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STS to BLI?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI)?
Book a flight from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**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.
Is it cheaper to buy a plane ticket from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI) last-minute?
Last-minute fares from STS to BLI are typically more expensive. To lock in the best rates, start searching for flights well ahead of time. That being said, if you're flexible with your travel plans, you may find a cheap ticket right before your trip.
Is it cheaper to book a STS to BLI flight and hotel package?
You'll typically save money by booking a STS to BLI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After selecting your ideal flights and accommodations, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sonoma County Airport (STS) to Bellingham Intl. Airport (BLI)?
In most cases, you can modify or cancel your STS to BLI flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want further details, head to our Customer Service portal.

Travel information

Origin airport
Sonoma County
Destination airport
Bellingham Intl.
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$258
Distance
710 mi

Book with confidence

Santa Rosa to Bellingham Flights

The cheapest times to fly from Santa Rosa 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 Santa Rosa to Bellingham are during the month of December. You can find some of the cheapest flights from Santa Rosa to Bellingham with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Santa Rosa to Bellingham

Sunday is one of the best days to book for cheap flights from Santa Rosa 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 Santa Rosa 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 Santa Rosa to Bellingham in 2025. You can also book with separate airlines for your outbound and return journeys, from $167 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 Santa Rosa 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 Santa Rosa 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.

 

Santa Rosa to Bellingham Flights

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*Available to One Key members.