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Cheap flights from Boston to San Francisco Bay Area from $109

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 10/21. 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

Frontier Logo
9:50 am - 9:23 pmBOS-SFO
14h 33m1 stop
Frontier Logo
10:23 pm - 8:55 amSFO-BOS
31h 32m1 stop
$222Frontier
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Thu, Oct 23 - Fri, Oct 24
JetBlue Logo
8:15 pm - 12:15 amBOS-SFO
7h 00mnonstop
JetBlue Logo
9:00 am - 5:58 pmSFO-BOS
5h 58mnonstop
$225JetBlue
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
4:14 pm - 11:35 pmBOS-SFO
10h 21m1 stop
American Airlines Logo
7:04 am - 6:10 pmSFO-BOS
8h 06m1 stop
$232American Airlines
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Wed, Oct 15 - Tue, Oct 21
American Airlines Logo
4:14 pm - 11:35 pmBOS-SFO
10h 21m1 stop
American Airlines Logo
10:55 am - 10:50 pmSFO-BOS
8h 55m1 stop
$233American Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Alaska Airlines Logo
7:00 am - 6:03 pmBOS-SFO
14h 03m1 stop
Alaska Airlines Logo
7:00 am - 3:41 pmSFO-BOS
5h 41mnonstop
$234Alaska Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Alaska Airlines Logo
7:00 am - 6:03 pmBOS-SFO
14h 03m1 stop
Alaska Airlines Logo
7:00 am - 3:41 pmSFO-BOS
5h 41mnonstop
$235Alaska Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Delta Logo
7:15 am - 11:02 amBOS-SFO
6h 47mnonstop
Delta Logo
12:30 pm - 9:10 pmSFO-BOS
5h 40mnonstop
$237Delta
Find Deal
Sat, Nov 1 - Sat, Nov 8
Delta Logo
7:15 am - 11:02 amBOS-SFO
6h 47mnonstop
Delta Logo
7:00 am - 3:42 pmSFO-BOS
5h 42mnonstop
$239Delta
Find Deal
Sat, Nov 1 - Sat, Nov 8
United Airlines Logo
6:00 am - 9:28 amBOS-SFO
6h 28mnonstop
United Airlines Logo
11:30 pm - 8:17 amSFO-BOS
5h 47mnonstop
$244United Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 21
United Airlines Logo
2:36 pm - 8:08 pmBOS-SFO
8h 32m1 stop
United Airlines Logo
11:30 pm - 8:17 amSFO-BOS
5h 47mnonstop
$247United Airlines
Find Deal
Wed, Oct 22 - Sat, Oct 25

Delta flights from Boston to San Francisco Bay Area

Our best Delta deals on Boston to San Francisco Bay Area flight tickets
Delta
Nov 1
BOS7:15 amBoston Logan Intl
6h 47m
SFO11:02 amSan Francisco
Nov 8
SFO12:30 pmSan Francisco
5h 40m
BOS9:10 pmBoston Logan Intl
$237
Find similar
Delta
Nov 1
BOS7:15 amBoston Logan Intl
6h 47m
SFO11:02 amSan Francisco
Nov 8
SFO7:00 amSan Francisco
5h 42m
BOS3:42 pmBoston Logan Intl
$239
Find similar
Delta
Oct 25
BOS7:15 amBoston Logan Intl
6h 47m
SFO11:02 amSan Francisco
Oct 27
SFO7:00 amSan Francisco
5h 42m
BOS3:42 pmBoston Logan Intl
$243
Find similar

Hawaiian Airlines flights from Boston to San Francisco Bay Area

Our best Hawaiian Airlines deals on Boston to San Francisco Bay Area flight tickets
Hawaiian Airlines
Nov 1
BOS7:00 amBoston Logan Intl
14h 03m
1 stop
SFO6:03 pmSan Francisco
Nov 8
SFO7:00 amSan Francisco
5h 41m
BOS3:41 pmBoston Logan Intl
$226
Find similar
Hawaiian Airlines
Nov 1
BOS7:00 amBoston Logan Intl
14h 03m
1 stop
SFO6:03 pmSan Francisco
Nov 8
SFO7:00 amSan Francisco
5h 41m
BOS3:41 pmBoston Logan Intl
$227
Find similar
Hawaiian Airlines
Nov 1
BOS6:59 pmBoston Logan Intl
6h 51m
SFO10:50 pmSan Francisco
Nov 8
SFO7:37 pmSan Francisco
25h 43m
1 stop
BOS12:20 amBoston Logan Intl
$231
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 September 25, 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

Thu 10/23

9:50 am-9:23 pm

1 stop14h 33m

San Francisco

Fri 10/24

10:23 pm-8:55 am

1 stop31h 32m

$222

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 10/15

8:15 pm-12:15 am

Nonstop7h 00m

San Francisco

Wed 10/22

9:00 am-5:58 pm

Nonstop5h 58m

$225

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 10/15

4:14 pm-11:35 pm

1 stop10h 21m

San Francisco

Tue 10/21

7:04 am-6:10 pm

1 stop8h 06m

$232

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 10/15

4:14 pm-11:35 pm

1 stop10h 21m

San Francisco

Wed 10/22

10:55 am-10:50 pm

1 stop8h 55m

$233

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 11/1

7:00 am-6:03 pm

1 stop14h 03m

San Francisco

Sat 11/8

7:00 am-3:41 pm

Nonstop5h 41m

$234

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 11/1

7:00 am-6:03 pm

1 stop14h 03m

San Francisco

Sat 11/8

7:00 am-3:41 pm

Nonstop5h 41m

$235

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 11/1

7:15 am-11:02 am

Nonstop6h 47m

San Francisco

Sat 11/8

12:30 pm-9:10 pm

Nonstop5h 40m

$237

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 11/1

7:15 am-11:02 am

Nonstop6h 47m

San Francisco

Sat 11/8

7:00 am-3:42 pm

Nonstop5h 42m

$239

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 10/18

6:00 am-9:28 am

Nonstop6h 28m

San Francisco

Tue 10/21

11:30 pm-8:17 am

Nonstop5h 47m

$244

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 10/22

2:36 pm-8:08 pm

1 stop8h 32m

San Francisco

Sat 10/25

11:30 pm-8:17 am

Nonstop5h 47m

$247

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, January 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 $331. If you aren’t able to travel to San Francisco Bay Area during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $336.

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 $376. 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 $547.

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 $338. In contrast, the most expensive time of day to depart to San Francisco Bay Area is at noon when prices are around $541.

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 $361 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 28m

Direct flights

Every day

Airports in San Francisco Bay Area

1 airport
The fastest flight from Boston to San Francisco Bay Area takes 6h 28m
Direct flights go from Boston to San Francisco Bay Area every day.
There is 1 airport near San Francisco Bay Area: 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
3,162 reviews
Search Frontier flights
JetBluePriceFrom $127Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
Hawaiian AirlinesPriceFrom $129Free CancellationRating
7.8
2,751 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $141Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
SouthwestPriceFrom $153Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
DeltaPriceFrom $180Free CancellationRating
7.9
7,973 reviews
Search Delta flights
American AirlinesPriceFrom $223Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $224Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Spirit AirlinesPriceFrom $227Free CancellationRating
6.3
8,045 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $227Free CancellationRating
7.4
8,926 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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