How often are flights from San Francisco to Boston delayed?

Historically, on average around 13% of flights between San Francisco and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 162 minutes.

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

38 flights are operational daily from San Francisco to Boston as of October 2025. The most popular departure time for this route is 07:00, with 55% of flights per day taking off at midday.

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. Thursday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Scandinavian Airlines have had the fewest delays on this route over the last 12 months, with about 5% of their flights experiencing any sort of delay.

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

266 flights are operational weekly from San Francisco to Boston as of October 2025. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.

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

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

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

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

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

Prices for flights from San Francisco Airport to Boston Logan Intl Airport were last updated today.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Boston Logan Intl Airport.

What documentation or ID do you need to fly to Boston Logan Intl Airport?

The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$206 Cheap Flights from San Francisco to Boston in 2025/26

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10:50 - 21:40SFO-BOS

7h 50m1 stop

06:45 - 14:40BOS-SFO

10h 55m1 stop

$343Southwest

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Thu, 4 Dec - Mon, 8 Dec

10:50 - 21:40SFO-BOS

7h 50m1 stop

06:10 - 14:05BOS-SFO

10h 55m1 stop

$349Southwest

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Wed, 10 Dec - Thu, 18 Dec

07:00 - 15:37SFO-BOS

5h 37mdirect

18:52 - 22:48BOS-SFO

6h 56mdirect

$351Alaska Airlines

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Fri, 5 Dec - Fri, 12 Dec

07:00 - 15:41SFO-BOS

5h 41mdirect

18:59 - 22:50BOS-SFO

6h 51mdirect

$356Alaska Airlines

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Tue, 4 Nov - Tue, 4 Nov

23:25 - 08:06SFO-BOS

5h 41mdirect

08:00 - 11:54BOS-SFO

6h 54mdirect

$360United Airlines

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Mon, 17 Nov - Mon, 24 Nov

05:50 - 16:30SFO-BOS

7h 40m1 stop

16:50 - 22:20BOS-SFO

8h 30m1 stop

$362Southwest

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Fri, 6 Feb - Tue, 10 Feb

07:00 - 15:42SFO-BOS

5h 42mdirect

07:25 - 11:23BOS-SFO

6h 58mdirect

$365Delta

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Wed, 5 Nov - Thu, 13 Nov

07:00 - 15:35SFO-BOS

5h 35mdirect

20:05 - 23:59BOS-SFO

6h 54mdirect

$370Delta

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Sat, 15 Nov - Thu, 20 Nov

18:45 - 05:56SFO-BOS

8h 11m1 stop

08:00 - 11:54BOS-SFO

6h 54mdirect

$373United Airlines

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Fri, 7 Nov - Sat, 8 Nov

12:22 - 23:59SFO-BOS

8h 37m1 stop

18:52 - 22:48BOS-SFO

6h 56mdirect

$374Hawaiian Airlines

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Fri, 5 Dec - Fri, 12 Dec

Alaska Airlines flights from San Francisco to Boston

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

Alaska Airlines

5 Dec

SFO07:00San Francisco

5h 37m

BOS15:37Boston Logan Intl

12 Dec

BOS18:52Boston Logan Intl

6h 56m

SFO22:48San Francisco

$351

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Alaska Airlines

4 Nov

SFO07:00San Francisco

5h 41m

BOS15:41Boston Logan Intl

4 Nov

BOS18:59Boston Logan Intl

6h 51m

SFO22:50San Francisco

$356

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Alaska Airlines

4 Nov

SFO07:00San Francisco

5h 41m

BOS15:41Boston Logan Intl

12 Nov

BOS18:59Boston Logan Intl

6h 51m

SFO22:50San Francisco

$365

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United Airlines flights from San Francisco to Boston

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

United Airlines

17 Nov

SFO23:25San Francisco

5h 41m

BOS08:06Boston Logan Intl

24 Nov

BOS08:00Boston Logan Intl

6h 54m

SFO11:54San Francisco

$360

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United Airlines

7 Nov

SFO18:45San Francisco

8h 11m

1 stop

BOS05:56Boston Logan Intl

8 Nov

BOS08:00Boston Logan Intl

6h 54m

SFO11:54San Francisco

$373

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United Airlines

17 Nov

SFO23:44San Francisco

7h 50m

1 stop

BOS10:34Boston Logan Intl

24 Nov

BOS08:00Boston Logan Intl

6h 54m

SFO11:54San Francisco

$376

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Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 4/12

10:50-21:40

1 stop7h 50m

Boston Logan Intl

Mon 8/12

06:45-14:40

1 stop10h 55m

$343

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 10/12

10:50-21:40

1 stop7h 50m

Boston Logan Intl

Thu 18/12

06:10-14:05

1 stop10h 55m

$349

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 5/12

07:00-15:37

Nonstop5h 37m

Boston Logan Intl

Fri 12/12

18:52-22:48

Nonstop6h 56m

$351

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 4/11

07:00-15:41

Nonstop5h 41m

Boston Logan Intl

Tue 4/11

18:59-22:50

Nonstop6h 51m

$356

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 17/11

23:25-08:06

Nonstop5h 41m

Boston Logan Intl

Mon 24/11

08:00-11:54

Nonstop6h 54m

$360

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 6/2

05:50-16:30

1 stop7h 40m

Boston Logan Intl

Tue 10/2

16:50-22:20

1 stop8h 30m

$362

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 5/11

07:00-15:42

Nonstop5h 42m

Boston Logan Intl

Thu 13/11

07:25-11:23

Nonstop6h 58m

$365

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 15/11

07:00-15:35

Nonstop5h 35m

Boston Logan Intl

Thu 20/11

20:05-23:59

Nonstop6h 54m

$370

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 7/11

18:45-05:56

1 stop8h 11m

Boston Logan Intl

Sat 8/11

08:00-11:54

Nonstop6h 54m

$373

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 5/12

12:22-23:59

1 stop8h 37m

Boston Logan Intl

Fri 12/12

18:52-22:48

Nonstop6h 56m

$374

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

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 Boston?

In general, January is the cheapest month to fly from San Francisco to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $486. The month of February is another great option to travel to Boston, with average flight prices from San Francisco averaging around $488.

What is the cheapest day to depart on your flight to Boston?

On average, the least expensive day to fly to Boston from San Francisco is on a Monday. momondo users have found tickets for Monday departures for as low as $407. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $627. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boston.

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

According to our data, the cheapest time of day to fly to Boston is in the morning. momondo users have found flights departing from San Francisco to Boston in the morning for as low as $407. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to Boston, so prices are often more expensive at around $583 per ticket.

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

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

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $583 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from San Francisco for as low as $534 on momondo.

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

There are 2 cabin classes available to choose from on San Francisco to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

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

When to book flights from San Francisco to Boston

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

Estimated return price

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

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

Fastest flight time	5h 27m
Direct flights	Every day
Airports in Boston	1 airport

The fastest flight from San Francisco to Boston takes 5h 27m

Direct flights go from San Francisco to Boston every day.

There is 1 airport near Boston: Boston Logan Intl (BOS)

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How far is San Francisco to Boston Logan Intl by plane?
Boston Logan Intl is 4329.4 km away from San Francisco. Typically, this will take 5h 31m by plane in normal conditions.
When did momondo last update prices for flights from San Francisco Airport to Boston Logan Intl Airport?
Prices for flights from San Francisco Airport to Boston Logan Intl Airport were last updated today.
How old do you have to be to fly from San Francisco Airport to Boston Logan Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Boston Logan Intl Airport.
What documentation or ID do you need to fly to Boston Logan Intl Airport?
The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco to Boston?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Francisco to Boston is Boeing 737 MAX 9 (29.30% of total bookings). The next most popular plane models are Airbus A321neo (26.60%), Airbus A318/A319/A320/A321 (17.61%), and Boeing 737 (11.73%).

Cambridge

Westford

Old Orchard Beach

Salem

Chelsea

Seekonk

Sturbridge

Why use momondo?

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

It is quick and easy to find San Francisco to Boston 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 Boston that suits you.

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

Yes. All flights to Boston from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boston from San Francisco.

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

Price alerts on flights to Boston from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from San Francisco to Boston from $206

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Boston departing on 4/11. 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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How to get the cheapest flight ticket from San Francisco to Boston

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 Boston?

What is the cheapest day to depart on your flight to Boston?

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

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

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

How far in advance should I book a flight to Boston?

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

There are 2 cabin classes available to choose from on San Francisco to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

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

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

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

How often are flights from San Francisco to Boston delayed?

Historically, on average around 13% of flights between San Francisco and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 162 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night 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. Thursday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Scandinavian Airlines have had the fewest delays on this route over the last 12 months, with about 5% of their flights experiencing any sort of delay.

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

38 flights are operational daily from San Francisco to Boston as of October 2025. The most popular departure time for this route is 07:00, with 55% of flights per day taking off at midday.

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

266 flights are operational weekly from San Francisco to Boston as of October 2025. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.

When to book flights from San Francisco to Boston

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

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

Fastest flight time

Direct flights

Airports in Boston

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

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

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

What documentation or ID do you need to fly to Boston Logan Intl Airport?

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

Travelling to a place near Boston?

Why use momondo?

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

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

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

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

An easier way to manage your Boston trip

We make it super easy to schedule, organise 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 Massachusetts