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

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

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

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

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

According to our data, Alaska Airlines have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

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

227 flights are operational weekly from San Francisco to Boston as of December 2025. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.

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

Saturday 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.

How often are flights from San Francisco to Boston delayed?

Historically, on average around 15% 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 172 minutes.

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

32 flights are operational daily from San Francisco to Boston as of December 2025. The most popular departure time for this route is 08:00, with 45% of flights per day taking off at midday.

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.

$194 Cheap Flights from San Francisco to Boston in 2025/26

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09:50 - 22:30

SFO

BOS

9h 40m1 stop

05:20 - 11:15

BOS

SFO

8h 55m1 stop

$333Southwest

Mon, 12 Jan - Thu, 15 Jan

07:10 - 15:51

SFO

BOS

5h 41mdirect

17:40 - 21:42

BOS

SFO

7h 02mdirect

$336Delta

Sun, 11 Jan - Sat, 24 Jan

08:25 - 17:13

SFO

BOS

5h 48mdirect

06:00 - 12:10

BOS

SFO

9h 10m1 stop

$337United Airlines

Wed, 7 Jan - Fri, 9 Jan

13:00 - 21:42

SFO

BOS

5h 42mdirect

06:00 - 11:39

BOS

SFO

8h 39m1 stop

$340United Airlines

Tue, 20 Jan - Wed, 13 May

07:00 - 17:39

SFO

BOS

7h 39m1 stop

16:20 - 22:47

BOS

SFO

9h 27m1 stop

$342Alaska Airlines

Wed, 4 Feb - Tue, 10 Feb

07:10 - 15:51

SFO

BOS

5h 41mdirect

17:40 - 21:42

BOS

SFO

7h 02mdirect

$343Delta

Tue, 13 Jan - Thu, 15 Jan

07:10 - 15:51

SFO

BOS

5h 41mdirect

06:00 - 19:33

BOS

SFO

16h 33m1 stop

$348Delta

Mon, 12 Jan - Sat, 24 Jan

07:10 - 15:51

SFO

BOS

5h 41mdirect

07:30 - 21:55

BOS

SFO

17h 25m1 stop

$349Delta

Thu, 8 Jan - Wed, 14 Jan

13:00 - 21:42

SFO

BOS

5h 42mdirect

14:20 - 21:35

BOS

SFO

10h 15m1 stop

$351United Airlines

Tue, 20 Jan - Tue, 27 Jan

06:05 - 20:50

SFO

BOS

11h 45m2 stops

06:50 - 14:20

BOS

SFO

10h 30m2 stops

$354Southwest

Wed, 14 Jan - Thu, 22 Jan

Alaska Airlines flights from San Francisco to Boston

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

Alaska Airlines

4 Feb

SFO07:00San Francisco

7h 39m

1 stop

BOS17:39Boston Logan Intl

10 Feb

BOS16:20Boston Logan Intl

9h 27m

1 stop

SFO22:47San Francisco

$342

Find similar

Alaska Airlines

4 Feb

SFO07:00San Francisco

7h 39m

1 stop

BOS17:39Boston Logan Intl

9 Feb

BOS16:20Boston Logan Intl

9h 27m

1 stop

SFO22:47San Francisco

$372

Find similar

Alaska Airlines

2 Mar

SFO18:27San Francisco

9h 27m

1 stop

BOS06:54Boston Logan Intl

4 Mar

BOS17:44Boston Logan Intl

9h 15m

1 stop

SFO23:59San Francisco

$384

Find similar

Delta flights from San Francisco to Boston

Our best Delta deals on San Francisco to Boston flight tickets

Delta

11 Jan

SFO07:10San Francisco

5h 41m

BOS15:51Boston Logan Intl

22 Jan

BOS17:40Boston Logan Intl

7h 02m

SFO21:42San Francisco

$336

Find similar

Delta

13 Jan

SFO07:10San Francisco

5h 41m

BOS15:51Boston Logan Intl

15 Jan

BOS17:40Boston Logan Intl

7h 02m

SFO21:42San Francisco

$343

Find similar

Delta

12 Jan

SFO07:10San Francisco

5h 41m

BOS15:51Boston Logan Intl

24 Jan

BOS06:00Boston Logan Intl

16h 33m

1 stop

SFO19:33San Francisco

$348

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 12/1

09:50-22:30

1 stop9h 40m

Boston Logan Intl

Thu 15/1

05:20-11:15

1 stop8h 55m

$333

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 11/1

07:10-15:51

Nonstop5h 41m

Boston Logan Intl

Sat 24/1

17:40-21:42

Nonstop7h 02m

$336

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 7/1

08:25-17:13

Nonstop5h 48m

Boston Logan Intl

Fri 9/1

06:00-12:10

1 stop9h 10m

$337

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 20/1

13:00-21:42

Nonstop5h 42m

Boston Logan Intl

Wed 13/5

06:00-11:39

1 stop8h 39m

$340

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 4/2

07:00-17:39

1 stop7h 39m

Boston Logan Intl

Tue 10/2

16:20-22:47

1 stop9h 27m

$342

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 13/1

07:10-15:51

Nonstop5h 41m

Boston Logan Intl

Thu 15/1

17:40-21:42

Nonstop7h 02m

$343

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 12/1

07:10-15:51

Nonstop5h 41m

Boston Logan Intl

Sat 24/1

06:00-19:33

1 stop16h 33m

$348

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 8/1

07:10-15:51

Nonstop5h 41m

Boston Logan Intl

Wed 14/1

07:30-21:55

1 stop17h 25m

$349

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 20/1

13:00-21:42

Nonstop5h 42m

Boston Logan Intl

Tue 27/1

14:20-21:35

1 stop10h 15m

$351

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 14/1

06:05-20:50

2 stops11h 45m

Boston Logan Intl

Thu 22/1

06:50-14:20

2 stops10h 30m

$354

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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 $487. The month of February is another great option to travel to Boston, with average flight prices from San Francisco averaging around $487.

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 $400. 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 $615. 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 $400. 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 $573 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 $579 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 $522 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 December 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 43m
Direct flights	Every day
Airports in Boston	1 airport

The fastest flight from San Francisco to Boston takes 5h 43m

Direct flights go from San Francisco to Boston every day.

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

Search flight deals

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 Airbus A321neo (24.87% of total bookings). The next most popular plane models are Boeing 737 MAX 9 (23.71%), Airbus A318/A319/A320/A321 (19.92%), and Boeing 757-200 (11.64%).

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 $194

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 24/1. 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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Alaska Airlines flights from San Francisco to Boston

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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 December 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?

Alaska Airlines, JetBlue, and United Airlines 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 15% 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 172 minutes.

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

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

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

Saturday 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, Alaska Airlines have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

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

32 flights are operational daily from San Francisco to Boston as of December 2025. The most popular departure time for this route is 08:00, with 45% of flights per day taking off at midday.

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

227 flights are operational weekly from San Francisco to Boston as of December 2025. The most popular departure day for this route is Fri, with 18% 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