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Cheap flights from Boston to San Francisco Bay Area from $108

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 Bay Area departing on 1/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Alaska Airlines Logo
4:20 pm - 10:35 pm
BOS
-
SJC
9h 15m1 stop
Alaska Airlines Logo
7:00 am - 5:39 pm
SJC
-
BOS
7h 39m1 stop
$215Alaska Airlines
Wed, Jan 21 - Tue, Jan 27
Delta Logo
7:15 am - 1:34 pm
BOS
-
SJC
9h 19m1 stop
Delta Logo
6:25 pm - 6:50 am
SJC
-
BOS
9h 25m1 stop
$217Delta
Wed, Jan 14 - Wed, Jan 21
American Airlines Logo
6:00 am - 12:10 pm
BOS
-
SJC
9h 10m1 stop
American Airlines Logo
6:00 am - 7:02 pm
SJC
-
BOS
10h 02m2 stops
$222American Airlines
Wed, Jan 14 - Wed, Jan 21
Frontier Logo
6:00 am - 1:24 pm
BOS
-
SFO
10h 24m1 stop
Frontier Logo
7:00 am - 1:03 am
SFO
-
BOS
39h 03m2 stops
$223Frontier
Wed, Jan 14 - Tue, Jan 20
United Airlines Logo
10:56 am - 2:51 pm
BOS
-
SFO
6h 55mnonstop
United Airlines Logo
11:15 pm - 10:52 am
SFO
-
BOS
8h 37m1 stop
$227United Airlines
Tue, Jan 20 - Thu, Jan 22
American Airlines Logo
9:51 am - 6:34 pm
BOS
-
SJC
11h 43m2 stops
American Airlines Logo
6:00 am - 6:19 pm
SJC
-
BOS
9h 19m2 stops
$227American Airlines
Wed, Jan 21 - Tue, Jan 27
JetBlue Logo
7:09 pm - 10:59 pm
BOS
-
SFO
6h 50mnonstop
JetBlue Logo
8:41 pm - 5:12 am
SFO
-
BOS
5h 31mnonstop
$228JetBlue
Wed, Feb 11 - Sat, Feb 14
JetBlue Logo
5:07 pm - 12:22 am
BOS
-
SFO
10h 15m1 stop
JetBlue Logo
8:29 pm - 5:00 am
SFO
-
BOS
5h 31mnonstop
$229JetBlue
Mon, Jan 12 - Tue, Jan 20
Southwest Logo
7:00 am - 2:50 pm
BOS
-
SJC
10h 50m2 stops
Southwest Logo
6:30 am - 4:50 pm
SJC
-
BOS
7h 20m1 stop
$242Southwest
Sun, Jan 25 - Fri, Jan 30
Southwest Logo
5:30 am - 2:05 pm
BOS
-
OAK
11h 35m1 stop
Southwest Logo
8:40 am - 10:30 pm
OAK
-
BOS
10h 50m2 stops
$285Southwest
Tue, Jan 20 - Tue, Jan 27

Frontier flights from Boston to San Francisco Bay Area

Our best Frontier deals on Boston to San Francisco Bay Area flight tickets
Frontier
Jan 13
BOS6:00 amBoston Logan Intl
10h 24m
1 stop
SFO1:24 pmSan Francisco
Jan 27
SFO7:00 amSan Francisco
39h 03m
2 stops
BOS1:03 amBoston Logan Intl
$223
Find similar
Frontier
Feb 17
BOS6:00 amBoston Logan Intl
18h 39m
1 stop
SFO9:39 pmSan Francisco
Feb 23
SFO10:58 pmSan Francisco
23h 15m
1 stop
BOS1:13 amBoston Logan Intl
$230
Find similar
Frontier
Jan 12
BOS6:00 amBoston Logan Intl
10h 18m
1 stop
SFO1:18 pmSan Francisco
Jan 20
SFO7:00 amSan Francisco
39h 03m
2 stops
BOS1:03 amBoston Logan Intl
$243
Find similar

United Airlines flights from Boston to San Francisco Bay Area

Our best United Airlines deals on Boston to San Francisco Bay Area flight tickets
United Airlines
Jan 20
BOS10:56 amBoston Logan Intl
6h 55m
SFO2:51 pmSan Francisco
Jan 22
SFO11:15 pmSan Francisco
8h 37m
1 stop
BOS10:52 amBoston Logan Intl
$227
Find similar
United Airlines
Jan 12
BOS10:56 amBoston Logan Intl
6h 55m
SFO2:51 pmSan Francisco
Jan 16
SFO9:30 pmSan Francisco
8h 44m
1 stop
BOS9:14 amBoston Logan Intl
$247
Find similar
United Airlines
Jan 22
BOS10:30 amBoston Logan Intl
13h 26m
2 stops
SJC8:56 pmSan Jose
Jan 24
SJC8:40 amSan Jose
12h 09m
2 stops
BOS11:49 pmBoston Logan Intl
$264
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to San Francisco Bay Area 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 22, 2025.
Use the filters below to find and compare flights from Boston to San Francisco Bay Area that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Wed 1/21

4:20 pm-10:35 pm

1 stop9h 15m

San Jose

Tue 1/27

7:00 am-5:39 pm

1 stop7h 39m

$215

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Wed 1/14

7:15 am-1:34 pm

1 stop9h 19m

San Jose

Wed 1/21

6:25 pm-6:50 am

1 stop9h 25m

$217

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Wed 1/14

6:00 am-12:10 pm

1 stop9h 10m

San Jose

Wed 1/21

6:00 am-7:02 pm

2 stops10h 02m

$222

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 1/14

6:00 am-1:24 pm

1 stop10h 24m

San Francisco

Tue 1/20

7:00 am-1:03 am

2 stops39h 03m

$223

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 1/20

10:56 am-2:51 pm

Nonstop6h 55m

San Francisco

Thu 1/22

11:15 pm-10:52 am

1 stop8h 37m

$227

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Wed 1/21

9:51 am-6:34 pm

2 stops11h 43m

San Jose

Tue 1/27

6:00 am-6:19 pm

2 stops9h 19m

$227

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 2/11

7:09 pm-10:59 pm

Nonstop6h 50m

San Francisco

Sat 2/14

8:41 pm-5:12 am

Nonstop5h 31m

$228

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 1/12

5:07 pm-12:22 am

1 stop10h 15m

San Francisco

Tue 1/20

8:29 pm-5:00 am

Nonstop5h 31m

$229

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Sun 1/25

7:00 am-2:50 pm

2 stops10h 50m

San Jose

Fri 1/30

6:30 am-4:50 pm

1 stop7h 20m

$242

BostonOakland

BOS - OAK

BOSOAK

Boston Logan Intl

Tue 1/20

5:30 am-2:05 pm

1 stop11h 35m

Oakland

Tue 1/27

8:40 am-10:30 pm

2 stops10h 50m

$285

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 Bay Area from

How to get the cheapest flight ticket from Boston to San Francisco Bay Area

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 San Francisco Bay Area?

In general, March is the cheapest month to fly from Boston to San Francisco Bay Area. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $332. If you aren’t able to travel to San Francisco Bay Area during the month of March, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $333.

What is the cheapest day to depart on your flight to San Francisco Bay Area?

On average, the least expensive day to fly to San Francisco Bay Area from Boston is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $382. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $544.

What is the cheapest time of day to depart on your flight to San Francisco Bay Area?

Our most recent data shows that the best time of day to fly to San Francisco Bay Area is in the evening. Flights from Boston to San Francisco Bay Area during this time can be as low as $336. In contrast, the most expensive time of day to depart to San Francisco Bay Area is at noon when prices are around $525.

What is the cheapest Boston Logan Intl to San Francisco Bay Area flight route?

Fly from Boston Logan Intl to San Francisco for the best Boston Logan Intl - San Francisco Bay Area flight prices

How far in advance should I book a flight to San Francisco Bay Area?

You are more likely to see cheaper flights to San Francisco Bay Area from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco Bay Area for around $367 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco Bay Area from Boston for as low as $327 on momondo.

What cabin class options are available on Boston Logan Intl to San Francisco Bay Area flights?

There are 4 cabin classes available to choose from on Boston Logan Intl to San Francisco Bay Area flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to San Francisco Bay Area flights?

No. A direct flight is the cheapest option for a flight between Boston to San Francisco Bay Area.

Cheap Boston to San Francisco Bay Area flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to San Francisco Bay Area

Fastest flight time

6h 27m

Direct flights

Every day

Airports in San Francisco Bay Area

6 airports
The fastest flight from Boston to San Francisco Bay Area takes 6h 27m
Direct flights go from Boston to San Francisco Bay Area every day.
There are 6 airports in San Francisco Bay Area. From Boston there are direct flights to San Francisco (SFO).
Search flight deals

  • When did momondo last update prices for flights from Boston Logan Intl Airport to San Francisco Bay Area?

    Prices for flights from Boston Logan Intl Airport to San Francisco Bay Area are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to San Francisco Bay Area?

  • How old do you have to be to fly from Boston Logan Intl Airport to San Francisco Bay Area?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to San Francisco Bay Area.

  • What documentation or ID do you need to fly to San Francisco Bay Area?

    The required travel and health documents for your San Francisco Bay Area trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Bay Area. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Boston to San Francisco Bay Area?

Best airlines flying from Boston to San Francisco Bay Area

Compare and see reviews for airlines that fly from Boston to San Francisco Bay Area with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $92Free CancellationRating
5.8
3,077 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $129Free CancellationRating
7.8
2,821 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $153Free CancellationRating
8.0
4,252 reviews
Search Southwest flights
DeltaPriceFrom $171Free CancellationRating
7.9
8,014 reviews
Search Delta flights
Alaska AirlinesPriceFrom $197Free CancellationRating
8.0
11,500 reviews
Search Alaska Airlines flights
JetBluePriceFrom $198Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
Sun Country AirPriceFrom $202Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
American AirlinesPriceFrom $217Free CancellationRating
7.2
11,052 reviews
Search American Airlines flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
9,102 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to San Francisco Bay Area?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to San Francisco Bay Area. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boston to San Francisco Bay Area with flexible booking policies on momondo?

Yes. All flights to San Francisco Bay Area 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 San Francisco Bay Area?

Once you have performed a search for Boston to San Francisco Bay Area flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Boston to San Francisco Bay Area right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to San Francisco Bay Area flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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