How often are flights from Boston to San Francisco delayed?

Historically, on average around 16% of flights between Boston and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 170 minutes.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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

As of December 2025, 159 flights take off from Boston and land in San Francisco each week. The most common flight departure day for this route is Thu, with 27% of weekly flights taking off on this day.

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

As of December 2025, 22 flights take off from Boston and land in San Francisco each day. The most common flight departure time for this route is 6:00a.m., with 40% of daily flights taking off at noon.

What is the most punctual flight time for Boston to San Francisco flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

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

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

Which airline has the best punctuality record on Boston to San Francisco flights?

According to our data, United Airlines has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

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 is 1 operator available for flights from Boston Logan Intl Airport to San Francisco Airport as of December 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

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7:55 a.m. - 11:48 a.m.

BOS

SFO

6h 53mdirect

1:08 p.m. - 9:47 p.m.

SFO

BOS

5h 39mdirect

C$ 310United Airlines

Wed, 11 Feb - Sat, 14 Feb

7:55 a.m. - 11:48 a.m.

BOS

SFO

6h 53mdirect

11:56 p.m. - 10:53 a.m.

SFO

BOS

7h 57m1 stop

C$ 313United Airlines

Wed, 21 Jan - Mon, 26 Jan

7:50 a.m. - 11:50 a.m.

BOS

SFO

7h 00mdirect

4:03 p.m. - 6:14 a.m.

SFO

BOS

11h 11m1 stop

C$ 317Delta

Tue, 13 Jan - Tue, 27 Jan

5:30 p.m. - 7:30 a.m.

BOS

SFO

17h 00m1 stop

7:10 a.m. - 3:51 p.m.

SFO

BOS

5h 41mdirect

C$ 318Delta

Fri, 6 Feb - Tue, 10 Feb

10:56 a.m. - 2:51 p.m.

BOS

SFO

6h 55mdirect

7:06 p.m. - 5:52 a.m.

SFO

BOS

7h 46m1 stop

C$ 322United Airlines

Wed, 11 Feb - Sat, 14 Feb

4:20 p.m. - 10:47 p.m.

BOS

SFO

9h 27m1 stop

12:00 p.m. - 11:54 p.m.

SFO

BOS

8h 54m1 stop

C$ 325Alaska Airlines

Wed, 21 Jan - Mon, 26 Jan

7:50 a.m. - 11:50 a.m.

BOS

SFO

7h 00mdirect

7:10 a.m. - 3:51 p.m.

SFO

BOS

5h 41mdirect

C$ 327Delta

Fri, 9 Jan - Sun, 11 Jan

5:40 p.m. - 9:42 p.m.

BOS

SFO

7h 02mdirect

4:03 p.m. - 6:14 a.m.

SFO

BOS

11h 11m1 stop

C$ 331Delta

Wed, 7 Jan - Wed, 14 Jan

6:50 a.m. - 2:20 p.m.

BOS

SFO

10h 30m2 stops

9:50 a.m. - 10:30 p.m.

SFO

BOS

9h 40m1 stop

C$ 333Southwest

Wed, 7 Jan - Wed, 14 Jan

7:11 a.m. - 11:10 a.m.

BOS

SFO

6h 59mdirect

7:00 a.m. - 7:51 p.m.

SFO

BOS

9h 51m1 stop

C$ 338JetBlue

Wed, 7 Jan - Sat, 10 Jan

JetBlue flights from Boston to San Francisco

Our best JetBlue deals on Boston to San Francisco flight tickets

JetBlue

7 Jan

BOS7:11 a.m.Boston Logan Intl

6h 59m

SFO11:10 a.m.San Francisco

10 Jan

SFO7:00 a.m.San Francisco

9h 51m

1 stop

BOS7:51 p.m.Boston Logan Intl

C$ 338

Find similar

JetBlue

16 Feb

BOS8:33 p.m.Boston Logan Intl

6h 52m

SFO12:25 a.m.San Francisco

22 Feb

SFO12:59 p.m.San Francisco

5h 38m

BOS9:37 p.m.Boston Logan Intl

C$ 354

Find similar

JetBlue

9 Jan

BOS6:40 p.m.Boston Logan Intl

6h 52m

SFO10:32 p.m.San Francisco

24 Jan

SFO7:00 a.m.San Francisco

8h 48m

1 stop

BOS6:48 p.m.Boston Logan Intl

C$ 365

Find similar

Southwest flights from Boston to San Francisco

Our best Southwest deals on Boston to San Francisco flight tickets

Southwest

7 Jan

BOS6:50 a.m.Boston Logan Intl

10h 30m

2 stops

SFO2:20 p.m.San Francisco

14 Jan

SFO9:50 a.m.San Francisco

9h 40m

1 stop

BOS10:30 p.m.Boston Logan Intl

C$ 333

Find similar

Southwest

14 Jan

BOS6:50 a.m.Boston Logan Intl

10h 30m

2 stops

SFO2:20 p.m.San Francisco

17 Jan

SFO10:25 a.m.San Francisco

7h 30m

1 stop

BOS8:55 p.m.Boston Logan Intl

C$ 361

Find similar

Southwest

7 Jan

BOS6:50 a.m.Boston Logan Intl

10h 30m

2 stops

SFO2:20 p.m.San Francisco

12 Jan

SFO9:50 a.m.San Francisco

9h 40m

1 stop

BOS10:30 p.m.Boston Logan Intl

C$ 386

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 11/2

7:55 a.m.-11:48 a.m.

Nonstop6h 53m

San Francisco

Sat 14/2

1:08 p.m.-9:47 p.m.

Nonstop5h 39m

C$ 310

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 21/1

7:55 a.m.-11:48 a.m.

Nonstop6h 53m

San Francisco

Mon 26/1

11:56 p.m.-10:53 a.m.

1 stop7h 57m

C$ 313

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 13/1

7:50 a.m.-11:50 a.m.

Nonstop7h 00m

San Francisco

Tue 27/1

4:03 p.m.-6:14 a.m.

1 stop11h 11m

C$ 317

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 6/2

5:30 p.m.-7:30 a.m.

1 stop17h 00m

San Francisco

Tue 10/2

7:10 a.m.-3:51 p.m.

Nonstop5h 41m

C$ 318

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 11/2

10:56 a.m.-2:51 p.m.

Nonstop6h 55m

San Francisco

Sat 14/2

7:06 p.m.-5:52 a.m.

1 stop7h 46m

C$ 322

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 21/1

4:20 p.m.-10:47 p.m.

1 stop9h 27m

San Francisco

Mon 26/1

12:00 p.m.-11:54 p.m.

1 stop8h 54m

C$ 325

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 9/1

7:50 a.m.-11:50 a.m.

Nonstop7h 00m

San Francisco

Sun 11/1

7:10 a.m.-3:51 p.m.

Nonstop5h 41m

C$ 327

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 7/1

5:40 p.m.-9:42 p.m.

Nonstop7h 02m

San Francisco

Wed 14/1

4:03 p.m.-6:14 a.m.

1 stop11h 11m

C$ 331

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 7/1

6:50 a.m.-2:20 p.m.

2 stops10h 30m

San Francisco

Wed 14/1

9:50 a.m.-10:30 p.m.

1 stop9h 40m

C$ 333

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 7/1

7:11 a.m.-11:10 a.m.

Nonstop6h 59m

San Francisco

Sat 10/1

7:00 a.m.-7:51 p.m.

1 stop9h 51m

C$ 338

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

Delays

Other information

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$ 457, 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$ 457.

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 Sunday. Travellers who choose to depart for San Francisco on a Sunday will often find tickets for as low as C$ 393. On the other hand, Saturday 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$ 1,340.

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

Flying to San Francisco from Boston in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as C$ 492 when looking at flights departing in the afternoon. In contrast, the most expensive time of day to depart to San Francisco is in the evening when prices are around C$ 567.

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$ 505 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$ 451 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 75% 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 December 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

Best price found	C$ 376
Fastest flight time	6h 52m
Direct flights	Every day
Airports in San Francisco	1 airport

The best flight deal from Boston to San Francisco found on momondo in the last 72 hours is C$ 376

The fastest flight from Boston to San Francisco takes 6h 52m

Direct flights go from Boston to San Francisco every day.

There is 1 airport in San Francisco. From Boston there are direct flights to 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 52m.
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 is 1 operator available for flights from Boston Logan Intl Airport to San Francisco Airport as of December 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 (25.37% of total bookings). The next most popular plane models are Airbus A318/A319/A320/A321 (22.57%), Boeing 737 MAX 9 (19.89%), and Boeing 757-200 (15.98%).
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 100% of all bookings.

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
JetBlue	PriceFrom C$ 376	Free Cancellation	Rating 7.2 2,894 reviews		Search JetBlue flights

JetBlue Flights From Boston to San Francisco
The lowest priced JetBlue flight from Boston to San Francisco from the last 72 hours was C$ 376. Generally, JetBlue has 14 flights on this route every week with an average price of C$ 394. JetBlue is rated 7.2/10 by our users.

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Milpitas

Carmel-by-the-Sea

Turlock

South San Francisco

Palo Alto

Burlingame

Cupertino

Mill Valley

Morgan Hill

Los Banos

Mountain View

Pacifica

Woodland

Roseville

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.

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Cheap flights from Boston to San Francisco from C$ 164

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 16/1. 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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Big names, great deals

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Filter for what you want

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JetBlue flights from Boston to San Francisco

Our best JetBlue deals on Boston to San Francisco flight tickets

Southwest flights from Boston to San Francisco

Our best Southwest 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

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 75% 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 December 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?

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

How often are flights from Boston to San Francisco delayed?

Historically, on average around 16% of flights between Boston and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 170 minutes.

What is the most punctual flight time for Boston to San Francisco flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Boston to San Francisco flights?

According to our data, United Airlines has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

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

As of December 2025, 22 flights take off from Boston and land in San Francisco each day. The most common flight departure time for this route is 6:00a.m., with 40% of daily flights taking off at noon.

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

As of December 2025, 159 flights take off from Boston and land in San Francisco each week. The most common flight departure day for this route is Thu, with 27% 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

Best price found

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

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