What is the cheapest airline that flies from Boston Logan Intl to San Francisco Bay Area?

Delta, United Airlines, and Southwest are the most popular carriers operating from Boston Logan Intl to San Francisco Bay Area

What airlines fly to San Francisco Bay Area?

JetBlue, United Airlines and Delta are the top three most popular airlines that fly to San Francisco Bay Area from Boston according to our data. JetBlue is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San Francisco Bay Area. Keep in mind that there are 9 different airlines that fly to San Francisco Bay Area on a routine basis, so you have a few additional options to choose from.

How many flights depart from Boston to San Francisco Bay Area on average per day?

As of April 2026, there are 28 flights per day flying from Boston to San Francisco Bay Area. The most common time of day flights depart is 7:00AM, with 39% of flights taking off at noon.

How many flights depart from Boston to San Francisco Bay Area on average per week?

197 flights are operational weekly from Boston to San Francisco Bay Area as of April 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

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?

As of April 2026, there are 9 operators available to choose from 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.

$133 Cheap Flights from Boston to San Francisco Bay Area in 2026

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Find the cheapest flights from Boston to San Francisco Bay Area

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:10 am - 12:48 pm

BOS

SJC

9h 38m

1 stop

5:55 pm - 6:20 am

SJC

BOS

9h 25m

1 stop

$265Delta

Sat, May 9 - Sat, May 23

10:20 am - 4:08 pm

BOS

SJC

8h 48m

1 stop

11:45 am - 12:40 am

SJC

BOS

9h 55m

1 stop

$266Delta

Fri, May 1 - Thu, May 7

11:11 am - 6:36 pm

BOS

SJC

10h 25m

2 stops

12:46 pm - 12:24 am

SJC

BOS

8h 38m

1 stop

$270American Airlines

Tue, May 12 - Tue, May 19

3:05 pm - 10:59 pm

BOS

SJC

10h 54m

2 stops

7:24 pm - 8:41 am

SJC

BOS

10h 17m

2 stops

$275American Airlines

Wed, May 6 - Fri, May 29

6:00 am - 5:34 pm

BOS

SFO

14h 34m

1 stop

10:38 pm - 11:25 am

SFO

BOS

9h 47m

1 stop

$276Frontier

Fri, May 1 - Sun, May 3

8:05 am - 5:01 pm

BOS

SFO

11h 56m

1 stop

7:55 am - 5:40 am

SFO

BOS

18h 45m

1 stop

$277Alaska Airlines

Tue, Jun 9 - Tue, Jun 16

6:00 am - 5:34 pm

BOS

SFO

14h 34m

1 stop

10:38 pm - 11:57 am

SFO

BOS

10h 19m

1 stop

$280Frontier

Fri, Apr 24 - Mon, Apr 27

8:05 am - 2:13 pm

BOS

SJC

9h 08m

1 stop

5:09 pm - 5:44 am

SJC

BOS

9h 35m

1 stop

$285Alaska Airlines

Thu, May 28 - Mon, Jun 1

3:45 pm - 12:25 am

BOS

OAK

11h 40m

1 stop

9:50 am - 11:50 pm

OAK

BOS

11h 00m

2 stops

$333Southwest

Mon, May 4 - Sat, May 9

7:10 am - 4:00 pm

BOS

STS

11h 50m

2 stops

4:35 pm - 9:45 am

STS

BOS

14h 10m

2 stops

$473Southwest

Thu, May 28 - Tue, Jun 2

Alaska Airlines flights from Boston to San Francisco Bay Area

Our best Alaska Airlines deals on Boston to San Francisco Bay Area flight tickets

Alaska Airlines

Jun 9

BOS8:05 amBoston Logan Intl

11h 56m

1 stop

SFO5:01 pmSan Francisco

Jun 16

SFO7:55 amSan Francisco

18h 45m

1 stop

BOS5:40 amBoston Logan Intl

$277

Alaska Airlines

May 28

BOS8:05 amBoston Logan Intl

9h 08m

1 stop

SJC2:13 pmSan Jose

Jun 1

SJC5:09 pmSan Jose

9h 35m

1 stop

BOS5:44 amBoston Logan Intl

$285

Alaska Airlines

May 23

BOS5:32 pmBoston Logan Intl

18h 57m

1 stop

SJC9:29 amSan Jose

May 30

SJC7:06 amSan Jose

19h 38m

1 stop

BOS5:44 amBoston Logan Intl

$295

Frontier flights from Boston to San Francisco Bay Area

Our best Frontier deals on Boston to San Francisco Bay Area flight tickets

Frontier

Apr 22

BOS6:00 amBoston Logan Intl

14h 34m

1 stop

SFO5:34 pmSan Francisco

Apr 27

SFO10:38 pmSan Francisco

10h 19m

1 stop

BOS11:57 amBoston Logan Intl

$271

Frontier

May 1

BOS6:00 amBoston Logan Intl

14h 34m

1 stop

SFO5:34 pmSan Francisco

May 3

SFO10:38 pmSan Francisco

9h 47m

1 stop

BOS11:25 amBoston Logan Intl

$276

Frontier

Apr 24

BOS6:00 amBoston Logan Intl

14h 34m

1 stop

SFO5:34 pmSan Francisco

Apr 27

SFO10:38 pmSan Francisco

10h 19m

1 stop

BOS11:57 amBoston Logan Intl

$280

momondo Fare Finder

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

Cheapest round-trip

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Sat 5/9

6:10 am-12:48 pm

1 stop9h 38m

San Jose

Sat 5/23

5:55 pm-6:20 am

1 stop9h 25m

$265

Quickest round-trip

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Fri 5/1

10:20 am-4:08 pm

1 stop8h 48m

San Jose

Thu 5/7

11:45 am-12:40 am

1 stop9h 55m

$266

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Tue 5/12

11:11 am-6:36 pm

2 stops10h 25m

San Jose

Tue 5/19

12:46 pm-12:24 am

1 stop8h 38m

$270

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Wed 5/6

3:05 pm-10:59 pm

2 stops10h 54m

San Jose

Fri 5/29

7:24 pm-8:41 am

2 stops10h 17m

$275

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 5/1

6:00 am-5:34 pm

1 stop14h 34m

San Francisco

Sun 5/3

10:38 pm-11:25 am

1 stop9h 47m

$276

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 6/9

8:05 am-5:01 pm

1 stop11h 56m

San Francisco

Tue 6/16

7:55 am-5:40 am

1 stop18h 45m

$277

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 4/24

6:00 am-5:34 pm

1 stop14h 34m

San Francisco

Mon 4/27

10:38 pm-11:57 am

1 stop10h 19m

$280

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Thu 5/28

8:05 am-2:13 pm

1 stop9h 08m

San Jose

Mon 6/1

5:09 pm-5:44 am

1 stop9h 35m

$285

BostonOakland

BOS - OAK

BOSOAK

Boston Logan Intl

Mon 5/4

3:45 pm-12:25 am

1 stop11h 40m

Oakland

Sat 5/9

9:50 am-11:50 pm

2 stops11h 00m

$333

BostonSanta Rosa

BOS - STS

BOSSTS

Boston Logan Intl

Thu 5/28

7:10 am-4:00 pm

2 stops11h 50m

Santa Rosa Sonoma County

Tue 6/2

4:35 pm-9:45 am

2 stops14h 10m

$473

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to San Francisco Bay Area?

In general, September 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 $338. If you aren’t able to travel to San Francisco Bay Area during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $339.

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 $393. 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 $559.

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 $346. In contrast, the most expensive time of day to depart to San Francisco Bay Area is at noon when prices are around $502.

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 $386 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 $276 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

Frequently asked questions about flying from Boston to San Francisco Bay Area

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?
As of April 2026, there are 9 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Boston to San Francisco Bay Area is Airbus A220-300 (11.54% of total bookings). The next most popular plane models are Airbus A321neo (11.40%), Airbus A321-100/200 (11.04%), and Airbus A320-100/200 (10.10%).

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
Hawaiian Airlines	PriceFrom $118	Free Cancellation	Rating 7.8 2,838 reviews	Search Hawaiian Airlines flights
Frontier	PriceFrom $119	Free Cancellation	Rating 5.7 2,991 reviews	Search Frontier flights
Southwest	PriceFrom $153	Free Cancellation	Rating 8.0 4,331 reviews	Search Southwest flights
Delta	PriceFrom $157	Free Cancellation	Rating 7.9 8,404 reviews	Search Delta flights
JetBlue	PriceFrom $174	Free Cancellation	Rating 7.2 2,936 reviews	Search JetBlue flights
Alaska Airlines	PriceFrom $177	Free Cancellation	Rating 7.9 12,235 reviews	Search Alaska Airlines flights
Sun Country Air	PriceFrom $207	Free Cancellation	Rating 6.8 337 reviews	Search Sun Country Air flights
United Airlines	PriceFrom $224	Free Cancellation	Rating 7.4 9,587 reviews	Search United Airlines flights
American Airlines	PriceFrom $246	Free Cancellation	Rating 7.1 11,580 reviews	Search American 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.