$121 Cheap Flights from Boise (BOI) to Santa Rosa (STS)

View $121 flight on Sat, Feb 21, 2026Opens in a new window

Popular airlines from Boise Airport (BOI) to Santa Rosa, CA (STS-Sonoma County)

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Cheap Flights from Boise to Santa Rosa (BOI-STS)

Prices were available within the past 7 days and start at $121 for one-way flights and $248 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Dec 9 - Tue, Dec 16
BOI
Boise
STS
Santa Rosa
$248 Roundtrip, found 5 days ago
$248
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Boise to Santa Rosa, returning Tue, Dec 16, priced at $248 found 5 days ago
Hawaiian Airlines
Sat, Dec 6 - Sat, Dec 13
BOI
Boise
STS
Santa Rosa
$250 Roundtrip, found 5 days ago
$250
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sat, Dec 6 from Boise to Santa Rosa, returning Sat, Dec 13, priced at $250 found 5 days ago
Hawaiian Airlines
Sat, Dec 6 - Mon, Dec 15
BOI
Boise
STS
Santa Rosa
$252 Roundtrip, found 5 days ago
$252
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sat, Dec 6 from Boise to Santa Rosa, returning Mon, Dec 15, priced at $252 found 5 days ago
Alaska Airlines
Tue, Dec 9 - Tue, Dec 16
BOI
Boise
STS
Santa Rosa
$256 Roundtrip, found 5 days ago
$256
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Boise to Santa Rosa, returning Tue, Dec 16, priced at $256 found 5 days ago
Alaska Airlines
Thu, Dec 4 - Wed, Dec 10
BOI
Boise
STS
Santa Rosa
$257 Roundtrip, found 5 days ago
$257
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Boise to Santa Rosa, returning Wed, Dec 10, priced at $257 found 5 days ago
Hawaiian Airlines
Wed, Feb 11 - Tue, Feb 17
BOI
Boise
STS
Santa Rosa
$258 Roundtrip, found 20 hours ago
$258
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Wed, Feb 11 from Boise to Santa Rosa, returning Tue, Feb 17, priced at $258 found 20 hours ago
Hawaiian Airlines
Tue, Feb 17 - Fri, Feb 20
BOI
Boise
STS
Santa Rosa
$260 Roundtrip, found 20 hours ago
$260
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Tue, Feb 17 from Boise to Santa Rosa, returning Fri, Feb 20, priced at $260 found 20 hours ago
Hawaiian Airlines
Tue, Feb 17 - Thu, Feb 19
BOI
Boise
STS
Santa Rosa
$261 Roundtrip, found 20 hours ago
$261
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Tue, Feb 17 from Boise to Santa Rosa, returning Thu, Feb 19, priced at $261 found 20 hours ago
American Airlines
Tue, Nov 18 - Sat, Nov 22
BOI
Boise
STS
Santa Rosa
$279 Roundtrip, found 6 days ago
$279
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Nov 18 from Boise to Santa Rosa, returning Sat, Nov 22, priced at $279 found 6 days ago
Southwest Airlines
Tue, Apr 7 - Wed, Apr 8
BOI
Boise
STS
Santa Rosa
$339 Roundtrip, found 2 days ago
$339
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Tue, Apr 7 from Boise to Santa Rosa, returning Wed, Apr 8, priced at $339 found 2 days ago

Find the cheapest month to fly from Boise (BOI) to Santa Rosa (STS)

April is typically the cheapest month to fly

From $209 - $514 per traveler.

Alternative airports near Santa Rosa

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

Select flight to Sonoma County STS. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $360
STS
Sonoma County
CheapestClosest
Average driving time to city center10 min
Flights from $360
Flights from Boise (BOI) to Santa Rosa (STS)
Origin airport
Boise
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$247
Distance
489 mi

Boise to Santa Rosa Flights

The cheapest times to fly from Boise to Santa Rosa

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

 

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

Sunday is one of the best days to book for cheap flights from Boise to Santa Rosa: 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 Boise to Santa Rosa

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 Boise to Santa Rosa in 2025. You can also book with separate airlines for your outbound and return journeys, from $121 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 Boise to Santa Rosa 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 Boise to Santa Rosa 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 Boise Airport (BOI) to Sonoma County Airport (STS) cost?
Secure a cheap one-way flight from $121 or cheap return flight from $248 from Boise Airport (BOI) to Sonoma County Airport (STS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Boise Airport (BOI) to Sonoma County Airport (STS)?
December is the least expensive month to fly from BOI to STS. Traveling during an off-peak travel window is often the key to finding better deals on flights.
Which airlines fly direct from Boise Airport (BOI) to Sonoma County Airport (STS)?
Fly directly from Boise Airport (BOI) to Sonoma County Airport (STS) on an Avelo Airlines flight.
What is the cheapest airline that flies from Boise Airport (BOI) to Sonoma County Airport (STS)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest BOI to STS flight.
How many flights per day from Boise Airport (BOI) to Sonoma County Airport (STS)?
On average, you can pick from 2 direct flights per week from Boise Airport (BOI) to Sonoma County Airport (STS). For greater flexibility, consider flights with layovers. Enter your details on Expedia and then filter your search to show one or two stops.
What are the most popular departure times for flights from Boise Airport (BOI) to Sonoma County Airport (STS)?
The 11 AM departures from BOI to STS are the top choice for many travelers. They can also be more expensive. If you're hoping to save money, pick a less crowded time to fly.
What day of the week has the most flights from BOI to STS?
Jet off on a Thursday if you're after the best choice of flights from Boise Airport (BOI) to Sonoma County Airport (STS).
What is the earliest flight from Boise Airport (BOI) to Sonoma County Airport (STS)?
Take the earliest flight at around 11:11AM UTC-7, departing from Boise Airport (BOI). You'll be in the air for about 1h 41m, reaching Sonoma County Airport (STS) at approximately 11:52AM UTC-8.
How long does it take to fly from Boise Airport (BOI) to Sonoma County Airport (STS)?
Flights from BOI to STS have an average travel time of 1 hour and 41 minutes. The total distance between these two airports is 490 mi.
What airline has the least delays from BOI to STS?
With 86% of flights usually arriving as scheduled, Avelo Airlines has the best on-time performance for direct flights from Boise Airport (BOI) to Sonoma County Airport (STS). To monitor your flight status and get notifications if anything changes, simply head to the Expedia App.
What is the best time to fly from Boise Airport (BOI) to Sonoma County Airport (STS)?
To touch down at Sonoma County Airport (STS) on schedule, choose a flight that leaves from Boise Airport (BOI) before 3 PM. The likelihood 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 Santa Rosa from Boise Airport (BOI)?
Book a direct flight from Boise Airport (BOI) to Santa Rosa and touch down at one of these hubs:

  • San Francisco Intl. Airport (SFO)
  • Oakland Intl. Airport (OAK)
  • Sonoma County Airport (STS)

Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Sonoma County Airport (STS) last-minute?
Booking your ticket from BOI to STS shortly before your trip is generally more expensive. However, if there's some wiggle room with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a BOI to STS flight and hotel package?
Opting for a BOI to STS flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our extensive range of accommodations and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Sonoma County Airport (STS)?
In most cases, you can cancel or modify your BOI to STS flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you need further information, visit our Customer Service portal.

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*Available to One Key members.