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 14% of their flights experiencing any sort of delay.

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

As of January 2026, 20 flights take off from Boston and land in San Francisco each day. The most common flight departure time for this route is 7:00a.m., with 44% 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.

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 171 minutes.

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

As of January 2026, 145 flights take off from Boston and land in San Francisco each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.

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

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

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.

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 January 2026.

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$ 160 Cheap Flights from Boston to San Francisco in 2026

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Boston to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:36 p.m. - 11:44 p.m.

BOS

SFO

10h 08m

1 stop

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

SFO

BOS

9h 25m

1 stop

C$ 295Alaska Airlines

Wed, 25 Feb - Tue, 3 Mar

4:36 p.m. - 11:44 p.m.

BOS

SFO

10h 08m

1 stop

6:40 a.m. - 5:24 p.m.

SFO

BOS

7h 44m

1 stop

C$ 296Alaska Airlines

Thu, 19 Feb - Wed, 25 Feb

4:36 p.m. - 11:44 p.m.

BOS

SFO

10h 08m

1 stop

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

SFO

BOS

9h 25m

1 stop

C$ 308Alaska Airlines

Thu, 5 Mar - Tue, 10 Mar

7:45 a.m. - 11:47 a.m.

BOS

SFO

7h 02mdirect

1:00 p.m. - 9:35 p.m.

SFO

BOS

5h 35mdirect

C$ 322Delta

Thu, 19 Feb - Wed, 25 Feb

7:45 a.m. - 11:47 a.m.

BOS

SFO

7h 02mdirect

7:10 a.m. - 3:49 p.m.

SFO

BOS

5h 39mdirect

C$ 323Delta

Thu, 19 Feb - Wed, 25 Feb

7:45 a.m. - 11:47 a.m.

BOS

SFO

7h 02mdirect

7:10 a.m. - 3:49 p.m.

SFO

BOS

5h 39mdirect

C$ 324Delta

Thu, 19 Feb - Wed, 25 Feb

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

BOS

SFO

9h 27m

1 stop

6:40 a.m. - 5:24 p.m.

SFO

BOS

7h 44m

1 stop

C$ 329Alaska Airlines

Mon, 9 Feb - Wed, 25 Feb

6:00 a.m. - 9:58 a.m.

BOS

SFO

6h 58mdirect

4:10 p.m. - 12:49 a.m.

SFO

BOS

5h 39mdirect

C$ 333United Airlines

Fri, 20 Feb - Thu, 26 Feb

4:40 p.m. - 8:29 p.m.

BOS

SFO

6h 49mdirect

3:25 p.m. - 11:58 p.m.

SFO

BOS

5h 33mdirect

C$ 335JetBlue

Wed, 25 Feb - Mon, 2 Mar

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

BOS

SFO

7h 00mdirect

3:25 p.m. - 11:58 p.m.

SFO

BOS

5h 33mdirect

C$ 338JetBlue

Wed, 18 Mar - Mon, 30 Mar

Alaska Airlines flights from Boston to San Francisco

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

Alaska Airlines

25 Feb

BOS4:36 p.m.Boston Logan Intl

10h 08m

1 stop

SFO11:44 p.m.San Francisco

3 Mar

SFO11:34 a.m.San Francisco

9h 25m

1 stop

BOS11:59 p.m.Boston Logan Intl

C$ 295

Alaska Airlines

19 Feb

BOS4:36 p.m.Boston Logan Intl

10h 08m

1 stop

SFO11:44 p.m.San Francisco

25 Feb

SFO6:40 a.m.San Francisco

7h 44m

1 stop

BOS5:24 p.m.Boston Logan Intl

C$ 296

Alaska Airlines

5 Mar

BOS4:36 p.m.Boston Logan Intl

10h 08m

1 stop

SFO11:44 p.m.San Francisco

10 Mar

SFO11:34 a.m.San Francisco

9h 25m

1 stop

BOS11:59 p.m.Boston Logan Intl

C$ 308

Delta flights from Boston to San Francisco

Our best Delta deals on Boston to San Francisco flight tickets

Delta

19 Feb

BOS7:45 a.m.Boston Logan Intl

7h 02m

SFO11:47 a.m.San Francisco

25 Feb

SFO1:00 p.m.San Francisco

5h 35m

BOS9:35 p.m.Boston Logan Intl

C$ 322

Delta

19 Feb

BOS7:45 a.m.Boston Logan Intl

7h 02m

SFO11:47 a.m.San Francisco

25 Feb

SFO7:10 a.m.San Francisco

5h 39m

BOS3:49 p.m.Boston Logan Intl

C$ 323

Delta

19 Feb

BOS7:45 a.m.Boston Logan Intl

7h 02m

SFO11:47 a.m.San Francisco

25 Feb

SFO7:10 a.m.San Francisco

5h 39m

BOS3:49 p.m.Boston Logan Intl

C$ 324

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 25/2

4:36 p.m.-11:44 p.m.

1 stop10h 08m

San Francisco

Tue 3/3

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

1 stop9h 25m

C$ 295

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 19/2

4:36 p.m.-11:44 p.m.

1 stop10h 08m

San Francisco

Wed 25/2

6:40 a.m.-5:24 p.m.

1 stop7h 44m

C$ 296

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 5/3

4:36 p.m.-11:44 p.m.

1 stop10h 08m

San Francisco

Tue 10/3

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

1 stop9h 25m

C$ 308

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 19/2

7:45 a.m.-11:47 a.m.

Nonstop7h 02m

San Francisco

Wed 25/2

1:00 p.m.-9:35 p.m.

Nonstop5h 35m

C$ 322

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 19/2

7:45 a.m.-11:47 a.m.

Nonstop7h 02m

San Francisco

Wed 25/2

7:10 a.m.-3:49 p.m.

Nonstop5h 39m

C$ 323

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 19/2

7:45 a.m.-11:47 a.m.

Nonstop7h 02m

San Francisco

Wed 25/2

7:10 a.m.-3:49 p.m.

Nonstop5h 39m

C$ 324

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 9/2

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

1 stop9h 27m

San Francisco

Wed 25/2

6:40 a.m.-5:24 p.m.

1 stop7h 44m

C$ 329

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 20/2

6:00 a.m.-9:58 a.m.

Nonstop6h 58m

San Francisco

Thu 26/2

4:10 p.m.-12:49 a.m.

Nonstop5h 39m

C$ 333

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 25/2

4:40 p.m.-8:29 p.m.

Nonstop6h 49m

San Francisco

Mon 2/3

3:25 p.m.-11:58 p.m.

Nonstop5h 33m

C$ 335

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 18/3

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

Nonstop7h 00m

San Francisco

Mon 30/3

3:25 p.m.-11:58 p.m.

Nonstop5h 33m

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 March. Flight prices, which tend to average around C$ 447, are often lower during this time because this is during the off-season. The month of September is another great option to travel to San Francisco, with average flight prices from Boston averaging around C$ 458.

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$ 387. 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$ 1,320.

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

Flying to San Francisco from Boston in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 497 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 737.

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$ 497 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$ 437 on momondo.

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

There are 2 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 5% 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 January 2026, prices for Boston to San Francisco flights are approximately 13% cheaper 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 42m
Direct flights	Every day
Airports in San Francisco	1 airport

The fastest flight from Boston to San Francisco takes 6h 42m

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 42m.
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 January 2026.
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 A318/A319/A320/A321 (26.15% of total bookings). The next most popular plane models are Airbus A321neo (25.56%), Boeing 757-200 (20.79%), and Boeing 737 MAX 9 (16.74%).
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$ 160	Free Cancellation	Rating 7.2 2,891 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$ 160. Generally, JetBlue has 17 flights on this route every week with an average price of C$ 387. 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

Fremont

Santa Clara

Cupertino

Mill Valley

Pacifica

Morgan Hill

Woodland

Los Banos

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

Find my bookings

Get notified when prices go down

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

1 adult

Sat 28/2

Sat 7/3

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing California

Popular Cities in the United States

Flights to Fort Lauderdalefrom C$ 155

Flights to Orlandofrom C$ 175

Flights to New Yorkfrom C$ 242

Flights to Las Vegasfrom C$ 128

Flights to Los Angelesfrom C$ 144

Flights to Miamifrom C$ 312

Flights to Honolulufrom C$ 362

Flights to Phoenixfrom C$ 172

Flights to Tampafrom C$ 198

Flights to Houstonfrom C$ 262

Flights to Chicagofrom C$ 208

Flights to Seattlefrom C$ 198

Cheap flights from Boston to San Francisco from C$ 162

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 19/2. 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

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Alaska Airlines flights from Boston to San Francisco

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

Delta flights from Boston to San Francisco

Our best Delta deals on Boston to San Francisco flight tickets

momondo Fare Finder

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 2 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 5% 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 January 2026, prices for Boston to San Francisco flights are approximately 13% cheaper 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, Frontier, and JetBlue 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 171 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 14% of their flights experiencing any sort of delay.

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

As of January 2026, 20 flights take off from Boston and land in San Francisco each day. The most common flight departure time for this route is 7:00a.m., with 44% of daily flights taking off at noon.

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

As of January 2026, 145 flights take off from Boston and land in San Francisco each week. The most common flight departure day for this route is Mon, with 19% 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

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