How often are flights from San Francisco to Boston delayed?

Historically, on average around 16% 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 173 minutes.

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

31 flights are operational daily from San Francisco to Boston as of January 2026. The most popular departure time for this route is 07:00, with 50% of flights per day taking off at midday.

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.

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

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

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.

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

220 flights are operational weekly from San Francisco to Boston as of January 2026. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.

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.

$199 Cheap Flights from San Francisco to Boston in 2026

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13:00 - 21:37

SFO

BOS

5h 37mdirect

17:40 - 21:42

BOS

SFO

7h 02mdirect

$309Delta

Fri, 6 Feb - Mon, 9 Feb

20:29 - 05:00

SFO

BOS

5h 31mdirect

15:05 - 18:55

BOS

SFO

6h 50mdirect

$311JetBlue

Sat, 31 Jan - Mon, 2 Feb

07:10 - 15:51

SFO

BOS

5h 41mdirect

17:35 - 21:35

BOS

SFO

7h 00mdirect

$317Delta

Thu, 5 Feb - Wed, 25 Feb

20:30 - 05:01

SFO

BOS

5h 31mdirect

20:40 - 00:31

BOS

SFO

6h 51mdirect

$318JetBlue

Tue, 3 Feb - Wed, 4 Mar

13:00 - 21:35

SFO

BOS

5h 35mdirect

17:35 - 21:35

BOS

SFO

7h 00mdirect

$324Delta

Tue, 24 Feb - Tue, 3 Mar

20:40 - 05:11

SFO

BOS

5h 31mdirect

17:50 - 21:40

BOS

SFO

6h 50mdirect

$326JetBlue

Fri, 13 Feb - Mon, 16 Feb

11:05 - 19:51

SFO

BOS

5h 46mdirect

06:00 - 12:05

BOS

SFO

9h 05m1 stop

$332United Airlines

Tue, 3 Feb - Wed, 18 Feb

23:25 - 08:10

SFO

BOS

5h 45mdirect

07:55 - 11:48

BOS

SFO

6h 53mdirect

$335United Airlines

Sun, 8 Feb - Wed, 11 Feb

07:00 - 17:39

SFO

BOS

7h 39m1 stop

16:20 - 22:47

BOS

SFO

9h 27m1 stop

$339Alaska Airlines

Tue, 3 Feb - Thu, 5 Feb

15:25 - 23:58

SFO

BOS

5h 33mdirect

07:00 - 11:00

BOS

SFO

7h 00mdirect

$341JetBlue

Wed, 25 Feb - Sun, 1 Mar

Delta flights from San Francisco to Boston

Our best Delta deals on San Francisco to Boston flight tickets

Delta

6 Feb

SFO13:00San Francisco

5h 37m

BOS21:37Boston Logan Intl

9 Feb

BOS17:40Boston Logan Intl

7h 02m

SFO21:42San Francisco

$309

Delta

5 Feb

SFO07:10San Francisco

5h 41m

BOS15:51Boston Logan Intl

25 Feb

BOS17:35Boston Logan Intl

7h 00m

SFO21:35San Francisco

$317

Delta

24 Feb

SFO13:00San Francisco

5h 35m

BOS21:35Boston Logan Intl

3 Mar

BOS17:35Boston Logan Intl

7h 00m

SFO21:35San Francisco

$324

United Airlines flights from San Francisco to Boston

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

United Airlines

3 Feb

SFO11:05San Francisco

5h 46m

BOS19:51Boston Logan Intl

18 Feb

BOS06:00Boston Logan Intl

9h 05m

1 stop

SFO12:05San Francisco

$332

United Airlines

8 Feb

SFO23:25San Francisco

5h 45m

BOS08:10Boston Logan Intl

11 Feb

BOS07:55Boston Logan Intl

6h 53m

SFO11:48San Francisco

$335

United Airlines

3 Feb

SFO08:25San Francisco

5h 48m

BOS17:13Boston Logan Intl

2 Mar

BOS16:47Boston Logan Intl

9h 30m

1 stop

SFO23:17San Francisco

$347

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 6/2

13:00-21:37

Nonstop5h 37m

Boston Logan Intl

Mon 9/2

17:40-21:42

Nonstop7h 02m

$309

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 31/1

20:29-05:00

Nonstop5h 31m

Boston Logan Intl

Mon 2/2

15:05-18:55

Nonstop6h 50m

$311

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 5/2

07:10-15:51

Nonstop5h 41m

Boston Logan Intl

Wed 25/2

17:35-21:35

Nonstop7h 00m

$317

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 3/2

20:30-05:01

Nonstop5h 31m

Boston Logan Intl

Wed 4/3

20:40-00:31

Nonstop6h 51m

$318

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 24/2

13:00-21:35

Nonstop5h 35m

Boston Logan Intl

Tue 3/3

17:35-21:35

Nonstop7h 00m

$324

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 13/2

20:40-05:11

Nonstop5h 31m

Boston Logan Intl

Mon 16/2

17:50-21:40

Nonstop6h 50m

$326

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 3/2

11:05-19:51

Nonstop5h 46m

Boston Logan Intl

Wed 18/2

06:00-12:05

1 stop9h 05m

$332

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 8/2

23:25-08:10

Nonstop5h 45m

Boston Logan Intl

Wed 11/2

07:55-11:48

Nonstop6h 53m

$335

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 3/2

07:00-17:39

1 stop7h 39m

Boston Logan Intl

Thu 5/2

16:20-22:47

1 stop9h 27m

$339

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 25/2

15:25-23:58

Nonstop5h 33m

Boston Logan Intl

Sun 1/3

07:00-11:00

Nonstop7h 00m

$341

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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

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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 $466. The month of February is another great option to travel to Boston, with average flight prices from San Francisco averaging around $489.

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 $395. 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 $566 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 $568 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 $510 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 January 2026, 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 47m
Direct flights	Every day
Airports in Boston	1 airport

The fastest flight from San Francisco to Boston takes 5h 47m

Direct flights go from San Francisco to Boston every day.

There is 1 airport in Boston. From San Francisco there are direct flights to 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 47m 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 A318/A319/A320/A321 (22.67% of total bookings). The next most popular plane models are Airbus A321neo (22.38%), Boeing 757-200 (17.48%), and Boeing 737 MAX 9 (16.87%).

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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.

An easier way to manage your Boston trip

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Cheap flights from San Francisco to Boston from $199

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 12/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

What is the cheapest month to fly 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 January 2026, 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?

United Airlines, JetBlue, and Southwest 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 16% 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 173 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?

31 flights are operational daily from San Francisco to Boston as of January 2026. The most popular departure time for this route is 07:00, with 50% of flights per day taking off at midday.

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

220 flights are operational weekly from San Francisco to Boston as of January 2026. 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