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Cheap flights from Boston to San Francisco from $338

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Francisco departing on 2/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Alaska Airlines Logo
4:20 pm - 10:46 pmBOS-STS
9h 26m1 stop
Alaska Airlines Logo
11:18 am - 11:59 pmSTS-BOS
9h 41m1 stop
$338Alaska Airlines
Find Deal
Tue, Feb 24 - Wed, Feb 25
Alaska Airlines Logo
4:20 pm - 10:46 pmBOS-STS
9h 26m1 stop
Alaska Airlines Logo
6:15 pm - 11:59 pmSTS-BOS
26h 44m2 stops
$366Alaska Airlines
Find Deal
Tue, Feb 24 - Wed, Feb 25
Alaska Airlines Logo
6:30 am - 11:23 amBOS-STS
31h 53m1 stop
Alaska Airlines Logo
6:45 am - 6:23 pmSTS-BOS
8h 38m1 stop
$410Alaska Airlines
Find Deal
Thu, Jan 1 - Tue, Jan 6
Alaska Airlines Logo
10:00 am - 12:56 pmBOS-STS
29h 56m2 stops
Alaska Airlines Logo
6:15 pm - 11:59 pmSTS-BOS
26h 44m2 stops
$413Alaska Airlines
Find Deal
Tue, Feb 24 - Wed, Feb 25
Alaska Airlines Logo
6:30 am - 11:23 amBOS-STS
31h 53m1 stop
Alaska Airlines Logo
7:52 pm - 6:23 pmSTS-BOS
19h 31m1 stop
$442Alaska Airlines
Find Deal
Thu, Jan 1 - Mon, Jan 5
Alaska Airlines Logo
7:30 am - 12:18 amBOS-STS
19h 48m2 stops
Alaska Airlines Logo
6:45 am - 6:23 pmSTS-BOS
8h 38m1 stop
$446Alaska Airlines
Find Deal
Thu, Jan 1 - Tue, Jan 6
Alaska Airlines Logo
7:30 am - 12:18 amBOS-STS
19h 48m2 stops
Alaska Airlines Logo
7:52 pm - 6:23 pmSTS-BOS
19h 31m1 stop
$478Alaska Airlines
Find Deal
Thu, Jan 1 - Mon, Jan 5
Alaska Airlines Logo
6:06 pm - 10:17 pmBOS-STS
31h 11m1 stop
Alaska Airlines Logo
7:52 pm - 6:23 pmSTS-BOS
19h 31m1 stop
$517Alaska Airlines
Find Deal
Wed, Dec 31 - Mon, Jan 5
American Airlines Logo
6:40 am - 12:29 pmBOS-STS
8h 49m1 stop
American Airlines Logo
4:21 pm - 5:37 amSTS-BOS
10h 16m1 stop
$721American Airlines
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Wed, Dec 31 - Sun, Jan 4
American Airlines Logo
9:10 am - 3:51 pmBOS-STS
9h 41m1 stop
American Airlines Logo
4:21 pm - 5:37 amSTS-BOS
10h 16m1 stop
$729American Airlines
Find Deal
Mon, Dec 29 - Sun, Jan 4

Alaska Airlines flights from Boston to Santa Rosa

Our best Alaska Airlines deals on Boston to Santa Rosa flight tickets
Alaska Airlines
Feb 24
BOS4:20 pmBoston Logan Intl
9h 26m
1 stop
STS10:46 pmSanta Rosa Sonoma County
Feb 25
STS11:18 amSanta Rosa Sonoma County
9h 41m
1 stop
BOS11:59 pmBoston Logan Intl
$338
Find similar
Alaska Airlines
Feb 24
BOS4:20 pmBoston Logan Intl
9h 26m
1 stop
STS10:46 pmSanta Rosa Sonoma County
Feb 25
STS6:15 pmSanta Rosa Sonoma County
26h 44m
2 stops
BOS11:59 pmBoston Logan Intl
$366
Find similar
Alaska Airlines
Jan 1
BOS6:30 amBoston Logan Intl
31h 53m
1 stop
STS11:23 amSanta Rosa Sonoma County
Jan 6
STS6:45 amSanta Rosa Sonoma County
8h 38m
1 stop
BOS6:23 pmBoston Logan Intl
$410
Find similar

American Airlines flights from Boston to Santa Rosa

Our best American Airlines deals on Boston to Santa Rosa flight tickets
American Airlines
Dec 31
BOS6:40 amBoston Logan Intl
8h 49m
1 stop
STS12:29 pmSanta Rosa Sonoma County
Jan 4
STS4:21 pmSanta Rosa Sonoma County
10h 16m
1 stop
BOS5:37 amBoston Logan Intl
$721
Find similar
American Airlines
Dec 29
BOS9:10 amBoston Logan Intl
9h 41m
1 stop
STS3:51 pmSanta Rosa Sonoma County
Jan 4
STS4:21 pmSanta Rosa Sonoma County
10h 16m
1 stop
BOS5:37 amBoston Logan Intl
$729
Find similar
American Airlines
Dec 29
BOS9:10 amBoston Logan Intl
9h 41m
1 stop
STS3:51 pmSanta Rosa Sonoma County
Jan 5
STS4:21 pmSanta Rosa Sonoma County
15h 09m
2 stops
BOS10:30 amBoston Logan Intl
$734
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Santa Rosa 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, momondo users made 832,500 searches. Data last updated November 2, 2025.
Use the filters below to find and compare flights from Boston to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Tue 2/24

4:20 pm-10:46 pm

1 stop9h 26m

Santa Rosa Sonoma County

Wed 2/25

11:18 am-11:59 pm

1 stop9h 41m

$338

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Tue 2/24

4:20 pm-10:46 pm

1 stop9h 26m

Santa Rosa Sonoma County

Wed 2/25

6:15 pm-11:59 pm

2 stops26h 44m

$366

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Thu 1/1

6:30 am-11:23 am

1 stop31h 53m

Santa Rosa Sonoma County

Tue 1/6

6:45 am-6:23 pm

1 stop8h 38m

$410

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Tue 2/24

10:00 am-12:56 pm

2 stops29h 56m

Santa Rosa Sonoma County

Wed 2/25

6:15 pm-11:59 pm

2 stops26h 44m

$413

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Thu 1/1

6:30 am-11:23 am

1 stop31h 53m

Santa Rosa Sonoma County

Mon 1/5

7:52 pm-6:23 pm

1 stop19h 31m

$442

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Thu 1/1

7:30 am-12:18 am

2 stops19h 48m

Santa Rosa Sonoma County

Tue 1/6

6:45 am-6:23 pm

1 stop8h 38m

$446

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Thu 1/1

7:30 am-12:18 am

2 stops19h 48m

Santa Rosa Sonoma County

Mon 1/5

7:52 pm-6:23 pm

1 stop19h 31m

$478

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Wed 12/31

6:06 pm-10:17 pm

1 stop31h 11m

Santa Rosa Sonoma County

Mon 1/5

7:52 pm-6:23 pm

1 stop19h 31m

$517

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Wed 12/31

6:40 am-12:29 pm

1 stop8h 49m

Santa Rosa Sonoma County

Sun 1/4

4:21 pm-5:37 am

1 stop10h 16m

$721

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Mon 12/29

9:10 am-3:51 pm

1 stop9h 41m

Santa Rosa Sonoma County

Sun 1/4

4:21 pm-5:37 am

1 stop10h 16m

$729

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Boston to Santa Rosa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Santa Rosa?

If you are unable to visit Santa Rosa during the month of January, then departing from Boston during the month February is also very affordable. Most momondo users find prices during this month for around $484.

What is the cheapest day to depart on your flight to Santa Rosa?

Our data shows that Tuesday is the least expensive day to fly to Santa Rosa. Tickets to fly out on this day can be as low as $542. On the other hand, Saturday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $816.

What is the cheapest time of day to depart on your flight to Santa Rosa?

Our data shows that the cheapest Boston to Santa Rosa flights are usually those with departure times in the evening. Our users have found flights to Santa Rosa in the evening for as low as $427. Flights in the afternoon are often more expensive with an average ticket price of $564.

Can stopping save me money on Boston to Santa Rosa flights?

You could potentially save up to 68% on your flight if you consider stops on a Boston to Santa Rosa flight.

How have Boston to Santa Rosa flight prices changed over time?

As of November 2025, prices for Boston to Santa Rosa flights are approximately 22% more expensive when compared to flights at the same time last year.

When to book flights from Boston to Santa Rosa

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Santa Rosa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Santa Rosa (BOS to STS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Santa Rosa

Direct flights

None
There are no direct flights from Boston to Santa Rosa. There are no popular flight routes from Boston to Santa Rosa.
Search flight deals

  • How far is Boston Logan Intl to Santa Rosa Sonoma County by plane?

    The straight-line distance from Boston Logan Intl to Santa Rosa Sonoma County is 2687.7 mi. In terms of flight time, this usually takes a little over 8h 49m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Santa Rosa Sonoma County Airport?

    Prices for flights from Boston Logan Intl Airport to Santa Rosa Sonoma County Airport were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Santa Rosa Sonoma County Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Santa Rosa Sonoma County Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Santa Rosa Sonoma County Airport.

  • What documentation or ID do you need to fly to Santa Rosa Sonoma County Airport?

    The travel and health documents you'll need for your trip to Santa Rosa Sonoma County Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Santa Rosa Sonoma County Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Boston to Santa Rosa?

Best airlines flying from Boston to Santa Rosa

Compare and see reviews for airlines that fly from Boston to Santa Rosa with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $364Free CancellationRating
8.0
11,231 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $451Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Fort Bragg
Mendocino
Ukiah
Little River
Point Arena

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Santa Rosa?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Santa Rosa. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to Santa Rosa with flexible booking policies on momondo?

Yes. All flights to Santa Rosa from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Boston to Santa Rosa?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to Santa Rosa.

I’m not ready to book a flight from Boston to Santa Rosa right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Santa Rosa now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Santa Rosa and let you know when they change.

An easier way to manage your Santa Rosa trip

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