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Cheap flights from Boston to San Francisco from $186

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Francisco departing on 1/8. 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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Find the cheapest flights from Boston to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
4:20 pm - 11:11 pm
BOS
-
STS
9h 51m1 stop
Alaska Airlines Logo
4:09 pm - 11:54 pm
STS
-
BOS
28h 45m2 stops
$370Alaska Airlines
Thu, Jan 8 - Tue, Jan 20
Alaska Airlines Logo
6:30 am - 11:40 pm
BOS
-
STS
20h 10m2 stops
Alaska Airlines Logo
4:09 pm - 11:54 pm
STS
-
BOS
28h 45m2 stops
$375Alaska Airlines
Tue, Jan 6 - Tue, Jan 20
Alaska Airlines Logo
7:30 am - 10:35 am
BOS
-
STS
30h 05m1 stop
Alaska Airlines Logo
11:15 am - 11:54 pm
STS
-
BOS
9h 39m1 stop
$382Alaska Airlines
Tue, Jan 6 - Wed, Jan 14
Alaska Airlines Logo
6:30 am - 2:44 pm
BOS
-
STS
11h 14m1 stop
Alaska Airlines Logo
4:09 pm - 11:54 pm
STS
-
BOS
28h 45m2 stops
$388Alaska Airlines
Tue, Jan 6 - Tue, Jan 20
Alaska Airlines Logo
4:20 pm - 2:29 pm
BOS
-
STS
25h 09m1 stop
Alaska Airlines Logo
4:09 pm - 11:54 pm
STS
-
BOS
28h 45m2 stops
$390Alaska Airlines
Fri, Jan 9 - Tue, Jan 20
Alaska Airlines Logo
4:20 pm - 11:11 pm
BOS
-
STS
9h 51m1 stop
Alaska Airlines Logo
2:30 pm - 5:39 pm
STS
-
BOS
24h 09m1 stop
$397Alaska Airlines
Thu, Jan 8 - Tue, Jan 20
Alaska Airlines Logo
6:44 pm - 11:59 pm
BOS
-
STS
32h 15m1 stop
Alaska Airlines Logo
7:00 am - 11:54 pm
STS
-
BOS
13h 54m2 stops
$403Alaska Airlines
Sat, Jan 17 - Thu, Jan 22
Alaska Airlines Logo
7:00 am - 7:24 pm
BOS
-
STS
15h 24m2 stops
Alaska Airlines Logo
7:00 am - 11:54 pm
STS
-
BOS
13h 54m2 stops
$408Alaska Airlines
Sat, Jan 17 - Thu, Jan 22
Alaska Airlines Logo
6:44 pm - 11:59 pm
BOS
-
STS
32h 15m1 stop
Alaska Airlines Logo
9:33 pm - 4:20 pm
STS
-
BOS
15h 47m1 stop
$412Alaska Airlines
Sat, Jan 17 - Thu, Jan 22
Alaska Airlines Logo
5:20 pm - 8:58 am
BOS
-
STS
18h 38m1 stop
Alaska Airlines Logo
7:00 am - 11:54 pm
STS
-
BOS
13h 54m2 stops
$423Alaska Airlines
Fri, Jan 16 - Thu, Jan 22

Alaska Airlines flights from Boston to Santa Rosa

Our best Alaska Airlines deals on Boston to Santa Rosa flight tickets
Alaska Airlines
Jan 8
BOS4:20 pmBoston Logan Intl
9h 51m
1 stop
STS11:11 pmSanta Rosa Sonoma County
Jan 20
STS4:09 pmSanta Rosa Sonoma County
28h 45m
2 stops
BOS11:54 pmBoston Logan Intl
$370
Find similar
Alaska Airlines
Jan 6
BOS6:30 amBoston Logan Intl
20h 10m
2 stops
STS11:40 pmSanta Rosa Sonoma County
Jan 20
STS4:09 pmSanta Rosa Sonoma County
28h 45m
2 stops
BOS11:54 pmBoston Logan Intl
$375
Find similar
Alaska Airlines
Jan 6
BOS7:30 amBoston Logan Intl
30h 05m
1 stop
STS10:35 amSanta Rosa Sonoma County
Jan 14
STS11:15 amSanta Rosa Sonoma County
9h 39m
1 stop
BOS11:54 pmBoston Logan Intl
$382
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 30
BOS5:59 amBoston Logan Intl
12h 52m
2 stops
STS3:51 pmSanta Rosa Sonoma County
Jan 4
STS4:21 pmSanta Rosa Sonoma County
10h 16m
1 stop
BOS5:37 amBoston Logan Intl
$944
Find similar
American Airlines
Dec 30
BOS5:59 amBoston Logan Intl
12h 52m
2 stops
STS3:51 pmSanta Rosa Sonoma County
Jan 4
STS12:59 pmSanta Rosa Sonoma County
11h 40m
2 stops
BOS3:39 amBoston Logan Intl
$1,058
Find similar
American Airlines
Dec 30
BOS6:40 amBoston Logan Intl
12h 11m
1 stop
STS3:51 pmSanta Rosa Sonoma County
Jan 3
STS4:21 pmSanta Rosa Sonoma County
10h 16m
1 stop
BOS5:37 amBoston Logan Intl
$1,081
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 December 18, 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

Thu 1/8

4:20 pm-11:11 pm

1 stop9h 51m

Santa Rosa Sonoma County

Tue 1/20

4:09 pm-11:54 pm

2 stops28h 45m

$370

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Tue 1/6

6:30 am-11:40 pm

2 stops20h 10m

Santa Rosa Sonoma County

Tue 1/20

4:09 pm-11:54 pm

2 stops28h 45m

$375

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Tue 1/6

7:30 am-10:35 am

1 stop30h 05m

Santa Rosa Sonoma County

Wed 1/14

11:15 am-11:54 pm

1 stop9h 39m

$382

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Tue 1/6

6:30 am-2:44 pm

1 stop11h 14m

Santa Rosa Sonoma County

Tue 1/20

4:09 pm-11:54 pm

2 stops28h 45m

$388

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Fri 1/9

4:20 pm-2:29 pm

1 stop25h 09m

Santa Rosa Sonoma County

Tue 1/20

4:09 pm-11:54 pm

2 stops28h 45m

$390

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Thu 1/8

4:20 pm-11:11 pm

1 stop9h 51m

Santa Rosa Sonoma County

Tue 1/20

2:30 pm-5:39 pm

1 stop24h 09m

$397

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Sat 1/17

6:44 pm-11:59 pm

1 stop32h 15m

Santa Rosa Sonoma County

Thu 1/22

7:00 am-11:54 pm

2 stops13h 54m

$403

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Sat 1/17

7:00 am-7:24 pm

2 stops15h 24m

Santa Rosa Sonoma County

Thu 1/22

7:00 am-11:54 pm

2 stops13h 54m

$408

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Sat 1/17

6:44 pm-11:59 pm

1 stop32h 15m

Santa Rosa Sonoma County

Thu 1/22

9:33 pm-4:20 pm

1 stop15h 47m

$412

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Fri 1/16

5:20 pm-8:58 am

1 stop18h 38m

Santa Rosa Sonoma County

Thu 1/22

7:00 am-11:54 pm

2 stops13h 54m

$423

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 December 2025, prices for Boston to Santa Rosa flights are approximately 91% 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

Fastest flight time

10h 14m

Direct flights

None
The fastest flight from Boston to Santa Rosa takes 10h 14m
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 10h 14m.

  • 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
11,474 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $432Free CancellationRating
7.2
11,053 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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