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Cheap flights from Boston to San Francisco Bay Area from $86

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 9/23. 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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Find the cheapest flights from Boston to San Francisco Bay Area

Cheap round-trip flights

Southwest Logo
7:50 am - 1:30 pmBOS-SFO
8h 40m1 stop
Southwest Logo
6:00 am - 4:55 pmSFO-BOS
7h 55m1 stop
$174Southwest
Find Deal
qua, out 15 - sáb, out 25
Southwest Logo
7:05 am - 5:55 pmBOS-SFO
13h 50m1 stop
Southwest Logo
9:05 pm - 8:10 amSFO-BOS
8h 05m1 stop
$180Southwest
Find Deal
ter, set 16 - sáb, set 27
Alaska Airlines Logo
8:23 pm - 11:52 pmBOS-SFO
6h 29mnonstop
Alaska Airlines Logo
6:10 am - 3:00 pmSFO-BOS
5h 50mnonstop
$214Alaska Airlines
Find Deal
sáb, ago 30 - sáb, set 6
JetBlue Logo
6:15 am - 9:47 amBOS-SFO
6h 32mnonstop
JetBlue Logo
10:00 pm - 6:39 amSFO-BOS
5h 39mnonstop
$224JetBlue
Find Deal
ter, set 16 - sáb, set 20
JetBlue Logo
6:05 am - 9:43 amBOS-SFO
6h 38mnonstop
JetBlue Logo
10:00 pm - 6:39 amSFO-BOS
5h 39mnonstop
$226JetBlue
Find Deal
sáb, ago 30 - sáb, set 6
Alaska Airlines Logo
8:25 pm - 12:05 amBOS-SFO
6h 40mnonstop
Alaska Airlines Logo
7:11 am - 4:00 pmSFO-BOS
5h 49mnonstop
$237Alaska Airlines
Find Deal
qua, out 15 - ter, out 21
United Airlines Logo
2:40 pm - 10:40 pmBOS-SJC
11h 00m2 stops
United Airlines Logo
6:20 pm - 8:09 amSJC-BOS
10h 49m2 stops
$241United Airlines
Find Deal
ter, set 16 - dom, set 21
Delta Logo
7:55 pm - 11:41 pmBOS-SFO
6h 46mnonstop
Delta Logo
12:35 pm - 9:15 pmSFO-BOS
5h 40mnonstop
$248Delta
Find Deal
sex, out 17 - sáb, out 25
United Airlines Logo
9:15 am - 6:48 pmBOS-SJC
12h 33m2 stops
United Airlines Logo
8:45 am - 9:49 pmSJC-BOS
10h 04m2 stops
$261United Airlines
Find Deal
ter, out 28 - sáb, nov 1
Delta Logo
7:10 am - 12:21 pmBOS-SJC
8h 11m1 stop
Delta Logo
12:30 pm - 1:24 amSJC-BOS
9h 54m1 stop
$277Delta
Find Deal
seg, ago 25 - qua, set 3

Southwest flights from Boston to San Francisco Bay Area

Our best Southwest deals on Boston to San Francisco Bay Area flight tickets
Southwest
Oct 15
BOS7:50 amBoston Logan Intl
8h 40m
1 stop
SFO1:30 pmSan Francisco
Oct 25
SFO6:00 amSan Francisco
7h 55m
1 stop
BOS4:55 pmBoston Logan Intl
$174
Find similar
Southwest
Sep 16
BOS7:05 amBoston Logan Intl
13h 50m
1 stop
SFO5:55 pmSan Francisco
Sep 27
SFO9:05 pmSan Francisco
8h 05m
1 stop
BOS8:10 amBoston Logan Intl
$180
Find similar
Southwest
Aug 26
BOS7:05 amBoston Logan Intl
10h 35m
1 stop
SFO2:40 pmSan Francisco
Sep 3
SFO11:25 amSan Francisco
8h 05m
1 stop
BOS10:30 pmBoston Logan Intl
$181
Find similar

American Airlines flights from Boston to San Francisco Bay Area

Our best American Airlines deals on Boston to San Francisco Bay Area flight tickets
American Airlines
Aug 30
BOS8:08 amBoston Logan Intl
11h 28m
1 stop
SJC4:36 pmSan Jose
Sep 6
SJC6:00 amSan Jose
11h 04m
1 stop
BOS8:04 pmBoston Logan Intl
$185
Find similar
American Airlines
Sep 4
BOS10:41 amBoston Logan Intl
9h 00m
1 stop
SJC4:41 pmSan Jose
Sep 9
SJC6:00 amSan Jose
9h 45m
2 stops
BOS6:45 pmBoston Logan Intl
$190
Find similar
American Airlines
Sep 11
BOS5:00 pmBoston Logan Intl
8h 47m
1 stop
SJC10:47 pmSan Jose
Sep 14
SJC7:10 pmSan Jose
7h 51m
1 stop
BOS6:01 amBoston Logan Intl
$208
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 agosto 6, 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 Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

qua 10/15

7:50 am-1:30 pm

1 stop8h 40m

San Francisco

sáb 10/25

6:00 am-4:55 pm

1 stop7h 55m

$174

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

ter 9/16

7:05 am-5:55 pm

1 stop13h 50m

San Francisco

sáb 9/27

9:05 pm-8:10 am

1 stop8h 05m

$180

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

sáb 8/30

8:23 pm-11:52 pm

Nonstop6h 29m

San Francisco

sáb 9/6

6:10 am-3:00 pm

Nonstop5h 50m

$214

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

ter 9/16

6:15 am-9:47 am

Nonstop6h 32m

San Francisco

sáb 9/20

10:00 pm-6:39 am

Nonstop5h 39m

$224

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

sáb 8/30

6:05 am-9:43 am

Nonstop6h 38m

San Francisco

sáb 9/6

10:00 pm-6:39 am

Nonstop5h 39m

$226

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

qua 10/15

8:25 pm-12:05 am

Nonstop6h 40m

San Francisco

ter 10/21

7:11 am-4:00 pm

Nonstop5h 49m

$237

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

ter 9/16

2:40 pm-10:40 pm

2 stops11h 00m

San Jose

dom 9/21

6:20 pm-8:09 am

2 stops10h 49m

$241

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

sex 10/17

7:55 pm-11:41 pm

Nonstop6h 46m

San Francisco

sáb 10/25

12:35 pm-9:15 pm

Nonstop5h 40m

$248

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

ter 10/28

9:15 am-6:48 pm

2 stops12h 33m

San Jose

sáb 11/1

8:45 am-9:49 pm

2 stops10h 04m

$261

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

seg 8/25

7:10 am-12:21 pm

1 stop8h 11m

San Jose

qua 9/3

12:30 pm-1:24 am

1 stop9h 54m

$277

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, 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 $311. 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 $331.

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 $374. 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 $537.

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 $322. In contrast, the most expensive time of day to depart to San Francisco Bay Area is at noon when prices are around $544.

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 $357 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 $325 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

Best Price Found

$86

Fastest flight time

6h 29m

Direct flights

Every day

Airports in San Francisco Bay Area

4 airports
The best one-way flight to San Francisco Bay Area from Boston in the past 72 hours is $86. The best round-trip flight deal from Boston to San Francisco Bay Area found on momondo in the last 72 hours is $174.
The fastest flight from Boston to San Francisco Bay Area takes 6h 29m
Direct flights go from Boston to San Francisco Bay Area every day.
There are 4 airports near San Francisco Bay Area: Santa Rosa Sonoma County (STS), Oakland (OAK), San Jose (SJC), 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 $84Free CancellationRating
5.8
3,231 reviews
Search Frontier flights
JetBluePriceFrom $127Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights
Hawaiian AirlinesPriceFrom $129Free CancellationRating
7.8
2,628 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $150Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
SouthwestPriceFrom $153Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
Spirit AirlinesPriceFrom $164Free CancellationRating
6.3
8,055 reviews
Search Spirit Airlines flights
DeltaPriceFrom $174Free CancellationRating
8.0
7,985 reviews
Search Delta flights
American AirlinesPriceFrom $178Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $216Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $227Free CancellationRating
7.4
8,917 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.

An easier way to manage your San Francisco Bay Area trip

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