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

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

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

As of September 2025, 323 flights take off from Boston and land in San Francisco each week. The most common flight departure day for this route is Sun, with 17% of weekly flights taking off on this day.

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

As of September 2025, 46 flights take off from Boston and land in San Francisco each day. The most common flight departure time for this route is 8:00p.m., with 37% of daily flights taking off at noon.

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

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

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

There are 2 operators available for flights from Boston Logan Intl Airport to San Francisco Airport as of September 2025.

How old do you have to be to fly from Boston Logan Intl Airport to San Francisco 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 San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents you'll need for your trip to San Francisco 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 San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 163 Cheap Flights from Boston to San Francisco in 2025/26

Q: What is the typical price of a round-trip flight between Boston and San Francisco?

Prices are currently low for flights on this route. Typical prices usually range from C$ 358 to C$ 648. The lowest price recently found on this route was C$ 307.

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Find the cheapest flights from Boston to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

5:00 p.m. - 10:30 p.m.BOS-SFO

8h 30m1 stop

12:15 p.m. - 10:45 p.m.SFO-BOS

7h 30m1 stop

C$ 307Southwest

Find Deal

Wed, 3 Dec - Tue, 9 Dec

6:45 a.m. - 2:40 p.m.BOS-SFO

10h 55m1 stop

5:50 a.m. - 7:10 p.m.SFO-BOS

10h 20m2 stops

C$ 314Southwest

Find Deal

Wed, 3 Dec - Tue, 9 Dec

8:25 p.m. - 12:05 a.m.BOS-SFO

6h 40mdirect

7:11 a.m. - 4:00 p.m.SFO-BOS

5h 49mdirect

C$ 367Hawaiian Airlines

Find Deal

Fri, 17 Oct - Mon, 20 Oct

8:25 p.m. - 12:05 a.m.BOS-SFO

6h 40mdirect

9:34 a.m. - 11:59 p.m.SFO-BOS

11h 25m1 stop

C$ 379Alaska Airlines

Find Deal

Thu, 16 Oct - Wed, 22 Oct

8:25 p.m. - 12:05 a.m.BOS-SFO

6h 40mdirect

7:11 a.m. - 4:00 p.m.SFO-BOS

5h 49mdirect

C$ 386Alaska Airlines

Find Deal

Thu, 16 Oct - Sun, 19 Oct

4:24 p.m. - 11:48 p.m.BOS-SFO

10h 24m1 stop

7:00 a.m. - 3:37 p.m.SFO-BOS

5h 37mdirect

C$ 389Hawaiian Airlines

Find Deal

Wed, 10 Dec - Fri, 12 Dec

8:15 p.m. - 12:15 a.m.BOS-SFO

7h 00mdirect

10:11 p.m. - 6:50 a.m.SFO-BOS

5h 39mdirect

C$ 406JetBlue

Find Deal

Sat, 18 Oct - Sat, 25 Oct

7:55 p.m. - 11:41 p.m.BOS-SFO

6h 46mdirect

8:20 a.m. - 11:44 p.m.SFO-BOS

12h 24m1 stop

C$ 411Delta

Find Deal

Thu, 16 Oct - Wed, 22 Oct

7:55 p.m. - 11:53 p.m.BOS-SFO

6h 58mdirect

8:25 a.m. - 5:30 a.m.SFO-BOS

18h 05m1 stop

C$ 417Delta

Find Deal

Mon, 24 Nov - Thu, 27 Nov

2:45 p.m. - 11:44 p.m.BOS-SFO

11h 59m1 stop

7:10 a.m. - 3:57 p.m.SFO-BOS

5h 47mdirect

C$ 419JetBlue

Find Deal

Tue, 7 Oct - Sun, 19 Oct

Delta flights from Boston to San Francisco

Our best Delta deals on Boston to San Francisco flight tickets

Delta

16 Oct

BOS7:55 p.m.Boston Logan Intl

6h 46m

SFO11:41 p.m.San Francisco

22 Oct

SFO8:20 a.m.San Francisco

12h 24m

1 stop

BOS11:44 p.m.Boston Logan Intl

C$ 411

Find similar

Delta

24 Nov

BOS7:55 p.m.Boston Logan Intl

6h 58m

SFO11:53 p.m.San Francisco

27 Nov

SFO8:25 a.m.San Francisco

18h 05m

1 stop

BOS5:30 a.m.Boston Logan Intl

C$ 417

Find similar

Delta

26 Nov

BOS7:55 p.m.Boston Logan Intl

6h 58m

SFO11:53 p.m.San Francisco

3 Dec

SFO12:25 p.m.San Francisco

14h 04m

1 stop

BOS5:29 a.m.Boston Logan Intl

C$ 429

Find similar

Hawaiian Airlines flights from Boston to San Francisco

Our best Hawaiian Airlines deals on Boston to San Francisco flight tickets

Hawaiian Airlines

17 Oct

BOS8:25 p.m.Boston Logan Intl

6h 40m

SFO12:05 a.m.San Francisco

20 Oct

SFO7:11 a.m.San Francisco

5h 49m

BOS4:00 p.m.Boston Logan Intl

C$ 367

Find similar

Hawaiian Airlines

10 Dec

BOS4:24 p.m.Boston Logan Intl

10h 24m

1 stop

SFO11:48 p.m.San Francisco

12 Dec

SFO7:00 a.m.San Francisco

5h 37m

BOS3:37 p.m.Boston Logan Intl

C$ 389

Find similar

Hawaiian Airlines

26 Sep

BOS6:00 a.m.Boston Logan Intl

9h 30m

1 stop

SFO12:30 p.m.San Francisco

29 Sep

SFO6:10 a.m.San Francisco

5h 50m

BOS3:00 p.m.Boston Logan Intl

C$ 591

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 3/12

5:00 p.m.-10:30 p.m.

1 stop8h 30m

San Francisco

Tue 9/12

12:15 p.m.-10:45 p.m.

1 stop7h 30m

C$ 307

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 3/12

6:45 a.m.-2:40 p.m.

1 stop10h 55m

San Francisco

Tue 9/12

5:50 a.m.-7:10 p.m.

2 stops10h 20m

C$ 314

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 17/10

8:25 p.m.-12:05 a.m.

Nonstop6h 40m

San Francisco

Mon 20/10

7:11 a.m.-4:00 p.m.

Nonstop5h 49m

C$ 367

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 16/10

8:25 p.m.-12:05 a.m.

Nonstop6h 40m

San Francisco

Wed 22/10

9:34 a.m.-11:59 p.m.

1 stop11h 25m

C$ 379

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 16/10

8:25 p.m.-12:05 a.m.

Nonstop6h 40m

San Francisco

Sun 19/10

7:11 a.m.-4:00 p.m.

Nonstop5h 49m

C$ 386

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 10/12

4:24 p.m.-11:48 p.m.

1 stop10h 24m

San Francisco

Fri 12/12

7:00 a.m.-3:37 p.m.

Nonstop5h 37m

C$ 389

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 18/10

8:15 p.m.-12:15 a.m.

Nonstop7h 00m

San Francisco

Sat 25/10

10:11 p.m.-6:50 a.m.

Nonstop5h 39m

C$ 406

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 16/10

7:55 p.m.-11:41 p.m.

Nonstop6h 46m

San Francisco

Wed 22/10

8:20 a.m.-11:44 p.m.

1 stop12h 24m

C$ 411

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 24/11

7:55 p.m.-11:53 p.m.

Nonstop6h 58m

San Francisco

Thu 27/11

8:25 a.m.-5:30 a.m.

1 stop18h 05m

C$ 417

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 7/10

2:45 p.m.-11:44 p.m.

1 stop11h 59m

San Francisco

Sun 19/10

7:10 a.m.-3:57 p.m.

Nonstop5h 47m

C$ 419

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

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 typical price of a round-trip flight between Boston and San Francisco?

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from Boston is in January. Flight prices, which tend to average around C$ 458, are often lower during this time because this is during the off-season. The month of March is another great option to travel to San Francisco, with average flight prices from Boston averaging around C$ 465.

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

The cheapest day to depart from Boston to San Francisco is on a Friday. Travellers who choose to depart for San Francisco on a Friday will often find tickets for as low as C$ 353. On the other hand, Tuesday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 751.

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

Flying to San Francisco from Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as C$ 394 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 751.

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

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

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

You are more likely to see cheaper flights to San Francisco from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 498 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Boston for as low as C$ 453 on momondo.

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

There are 3 cabin classes available to choose from on Boston Logan Intl to San Francisco 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 flights?

You could potentially save up to 61% on your flight if you consider stops on a Boston to San Francisco flight.

How have Boston to San Francisco flight prices changed over time?

As of September 2025, prices for Boston to San Francisco flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from Boston to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Boston to San Francisco (BOS to SFO) flight deals and tips

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

Fastest flight time	6h 28m
Direct flights	Every day
Airports in San Francisco	1 airport

The fastest flight from Boston to San Francisco takes 6h 28m

Direct flights go from Boston to San Francisco every day.

There is 1 airport near San Francisco: San Francisco (SFO)

Search flight deals

How far is Boston Logan Intl to San Francisco by plane?
The distance between Boston Logan Intl and San Francisco is about 4329.4 km. A reasonable flight in good conditions will take 6h 28m.
When did momondo last update prices for flights from Boston Logan Intl Airport to San Francisco Airport?
Prices for flights from Boston Logan Intl Airport to San Francisco Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Boston Logan Intl Airport to San Francisco Airport?
There are 2 operators available for flights from Boston Logan Intl Airport to San Francisco Airport as of September 2025.
How old do you have to be to fly from Boston Logan Intl Airport to San Francisco 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 San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco 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 San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Boston to San Francisco?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Boston to San Francisco is Airbus A321neo (28.67% of total bookings). The next most popular plane models are Boeing 737 MAX 9 (26.40%), Airbus A318/A319/A320/A321 (16.60%), and Boeing 737 (13.12%).
What is the most popular airline from Boston to San Francisco?
momondo data reveals that the most frequently booked airline on the route from Boston to San Francisco is JetBlue, representing 54% of all bookings. The subsequent popular airline is Delta at 46%.

Best airlines flying from Boston to San Francisco

Compare and see reviews for airlines that fly from Boston to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom C$ 206	Free Cancellation	Rating 7.9 7,954 reviews		Search Delta flights
JetBlue	PriceFrom C$ 312	Free Cancellation	Rating 7.2 2,912 reviews		Search JetBlue flights

Delta Flights From Boston to San Francisco
The lowest priced Delta flight from Boston to San Francisco from the last 72 hours was C$ 148. Generally, Delta has 14 flights on this route every week with an average price of C$ 255. Delta is rated 7.9/10 by our users.
JetBlue Flights From Boston to San Francisco
Across 2,912 JetBlue reviews on momondo, the average score is 7.2/10. JetBlue flies from Boston to San Francisco about 27 times each week, with ticket deals ranging from C$ 226 to C$ 453. Price data is based on momondo searches in the last 72 hours.

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Fremont

Turlock

South San Francisco

Mountain View

Sunnyvale

Half Moon Bay

Cupertino

Carmel-by-the-Sea

Mill Valley

Los Banos

Palo Alto

Pacifica

Roseville

Woodland

Why use momondo?

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

It is quick and easy to find Boston to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

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

Yes. All flights to San Francisco 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?

momondo provides multiple filters to help you find the best flight to San Francisco from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Boston and alert you when they change.

An easier way to manage your San Francisco 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.

Start using Trips

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Wed 22/10

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Cheap flights from Boston to San Francisco from C$ 176

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 1/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Boston to San Francisco

Cheap round-trip flights

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Cheap last-minute flights

Cheap direct flights

Delta flights from Boston to San Francisco

Our best Delta deals on Boston to San Francisco flight tickets

Hawaiian Airlines flights from Boston to San Francisco

Our best Hawaiian Airlines deals on Boston to San Francisco flight tickets

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Use the filters below to find and compare flights from Boston to San Francisco that are best for you.

See travel insights to San Francisco from

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

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 typical price of a round-trip flight between Boston and San Francisco?

What is the cheapest month to fly to San Francisco?

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

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

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

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

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

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

There are 3 cabin classes available to choose from on Boston Logan Intl to San Francisco 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 flights?

You could potentially save up to 61% on your flight if you consider stops on a Boston to San Francisco flight.

How have Boston to San Francisco flight prices changed over time?

As of September 2025, prices for Boston to San Francisco flights are approximately 5% more expensive when compared to flights at the same time last year.

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

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

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

As of September 2025, 46 flights take off from Boston and land in San Francisco each day. The most common flight departure time for this route is 8:00p.m., with 37% of daily flights taking off at noon.

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

As of September 2025, 323 flights take off from Boston and land in San Francisco each week. The most common flight departure day for this route is Sun, with 17% of weekly flights taking off on this day.

When to book flights from Boston to San Francisco

Cheap Boston to San Francisco (BOS to SFO) flight deals and tips

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

Fastest flight time

Direct flights

Airports in San Francisco

How far is Boston Logan Intl to San Francisco by plane?

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

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

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

What documentation or ID do you need to fly to San Francisco Airport?

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

What is the most popular airline from Boston to San Francisco?

Best airlines flying from Boston to San Francisco

Compare and see reviews for airlines that fly from Boston to San Francisco with momondo

Delta Flights From Boston to San Francisco

JetBlue Flights From Boston to San Francisco

Travelling to a place near San Francisco?

Why use momondo?

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

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

How can momondo help me find flights from Boston to San Francisco?

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

An easier way to manage your San Francisco 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California