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Cheap flights from San Francisco to Boston from £98

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
18 ott — 25 ott1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or February, booked 64 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from San Francisco to Boston

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 settembre 2025.

Round-trip from

£200

One-way from

£98

Popular in

December

Cheapest in

January

Average price

£255

Good round-trip deal

£190 or less

Good one-way deal

£101 or less
Alaska Airlines
  • Alaska Airlines
  • 14/11-14/11
  • Nonstop
  • 12h 32m total
  • San Francisco to Boston
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Hawaiian Airlines
  • Hawaiian Airlines
  • 16/12
  • 1 total stop
  • 7h 52m total
  • San Francisco to Boston
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from San Francisco to Boston Logan Intl.
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Price to beat on a one-way flight from San Francisco to Boston Logan Intl.
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Find flight deals from San Francisco to Boston

Cheapest flights from San Francisco to Boston
Explore the most affordable flight options available from San Francisco to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 settembre 2025.

ven 14/1107:00SFO - BOS
Nonstop5h 41mAlaska Airlines
ven 14/1118:59BOS - SFO
Nonstop6h 51mAlaska Airlines
Deal found 15/9£200
sab 25/1008:41SFO - BOS
Nonstop5h 58mJetBlue
sab 25/1020:15BOS - SFO
Nonstop7h 00mJetBlue
Deal found 15/9£201
sab 1/1107:00SFO - BOS
Nonstop5h 41mMultiple Airlines
sab 8/1118:59BOS - SFO
Nonstop6h 51mMultiple Airlines
Deal found 17/9£202
mer 19/1107:00SFO - BOS
Nonstop5h 41mAlaska Airlines
lun 24/1119:33BOS - SFO
Nonstop6h 47mAlaska Airlines
Deal found 15/9£202
mar 4/1112:15SFO - BOS
1 stop7h 30mSouthwest
mar 11/1107:45BOS - SFO
1 stop8h 35mSouthwest
Deal found 15/9£203
sab 25/1007:11SFO - BOS
Nonstop5h 49mHawaiian Airlines
mer 5/1118:59BOS - SFO
Nonstop6h 51mHawaiian Airlines
Deal found 15/9£204
mer 19/1115:20SFO - BOS
Nonstop5h 31mJetBlue
lun 24/1121:25BOS - SFO
Nonstop6h 44mJetBlue
Deal found 17/9£205
mar 9/1221:57SFO - BOS
1 stop16h 55mAlaska Airlines
ven 12/1218:52BOS - SFO
Nonstop6h 56mAlaska Airlines
Deal found 14/9£206
dom 12/1007:00SFO - BOS
Nonstop5h 42mDelta
mar 21/1019:55BOS - SFO
Nonstop6h 46mDelta
Deal found 17/9£207
sab 18/1007:11SFO - BOS
Nonstop5h 49mHawaiian Airlines
mar 21/1020:25BOS - SFO
Nonstop6h 40mHawaiian Airlines
Deal found 17/9£208
sab 1/1111:29SFO - BOS
1 stop9h 51mHawaiian Airlines
sab 8/1118:59BOS - SFO
Nonstop6h 51mHawaiian Airlines
Deal found 17/9£210
gio 30/1008:00SFO - BOS
1 stop12h 11mJetBlue
gio 6/1120:07BOS - SFO
Nonstop6h 47mJetBlue
Deal found 15/9£210

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 settembre 2025.
Use the filters below to find and compare flights from San Francisco to Boston that are best for you.

Fly from

San Francisco

Fly to

Boston

Route

Depart

Return

Price

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mer 19/11

08:15-16:47

Nonstop5h 32m

Boston Logan Intl

lun 24/11

21:25-01:09

Nonstop6h 44m

£204

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

lun 20/10

21:50-06:30

Nonstop5h 40m

Boston Logan Intl

gio 23/10

07:15-11:02

Nonstop6h 47m

£204

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

sab 25/10

07:11-16:00

Nonstop5h 49m

Boston Logan Intl

sab 1/11

18:59-22:50

Nonstop6h 51m

£204

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

sab 31/1

11:15-19:53

Nonstop5h 38m

Boston Logan Intl

dom 8/2

06:00-09:55

Nonstop6h 55m

£204

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

lun 6/10

21:50-06:30

Nonstop5h 40m

Boston Logan Intl

mar 21/10

19:55-23:41

Nonstop6h 46m

£204

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

ven 31/10

15:20-23:51

Nonstop5h 31m

Boston Logan Intl

mer 5/11

20:12-23:59

Nonstop6h 47m

£204

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

ven 31/10

12:10-20:43

Nonstop5h 33m

Boston Logan Intl

dom 9/11

07:00-10:50

Nonstop6h 50m

£204

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

ven 31/10

21:05-08:25

1 stop8h 20m

Boston Logan Intl

mer 5/11

07:20-13:55

1 stop9h 35m

£211

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

dom 23/11

18:45-05:56

1 stop8h 11m

Boston Logan Intl

mer 26/11

20:30-00:24

Nonstop6h 54m

£212

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mer 19/11

07:00-15:41

Nonstop5h 41m

Boston Logan Intl

lun 24/11

17:28-23:42

1 stop9h 14m

£212

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 22 results
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Best time to book a flight from San Francisco to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from San Francisco with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Boston

How far ahead should I book a flight from San Francisco to Boston?

Use this chart to determine the optimal time to book a return flight from San Francisco to Boston. Price data was last updated on 12 September 2025.

Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Francisco to Boston?

Currently, October is the cheapest month in which you can book a flight from San Francisco to Boston (average of £10). Flying from San Francisco to Boston in July is currently the most expensive (average of £724). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to BOS?

Find hourly flight availability from San Francisco to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 settembre 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 52% on flights from San Francisco to Boston by exploring options for tickets at midday.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this San Francisco to Boston flight route?

    This flight path from San Francisco to Boston Logan Intl was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from San Francisco to Boston?

    JetBlue, Delta, and Hawaiian Airlines can get you from San Francisco to Boston in just under 5h 32m. Your travel time will be generally consistent. There are 2696 mi between San Francisco and Boston. Generally, flights for this route are direct.

  • What are the cheapest airlines to fly from San Francisco to Boston one-way?

    One-way options have recently been found by users for as low as £102 on Southwest. Other airlines that offer cheap prices include JetBlue from £103 and Delta from £103 one-way.

  • What are the most reliable airlines from San Francisco to Boston?

    Before booking your flight to Boston from San Francisco, check out the most reliable airlines to get you to your destination on time: ITA Airways (100%), Etihad Airways (99%), Scandinavian Airlines( 93%).

  • What are the cheapest flights from San Francisco to Boston?

    The cheapest flight price from San Francisco to Boston is £87. On average you can expect to pay £453. The most popular route, (San Francisco - Boston Logan Intl), can usually be booked for £202.

  • Can I find deals for flights from San Francisco to Boston that include hotel bookings?

    Yes. In addition to deals on San Francisco to Boston flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Boston.

  • Can I find deals for business class flights from San Francisco to Boston?

    Yes. Cheapflights offers flight deals from San Francisco to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to Boston?

    Currently, October is the cheapest month in which you can book a flight from San Francisco to Boston (average of £10). Flying from San Francisco to Boston in July is currently the most expensive (average of £724). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Burlington
Peabody
Cambridge
Somerville
Quincy
Chelmsford

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Alternative routes for San Francisco to Boston

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Fly with Cheapflights

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How does Cheapflights help users find flights from San Francisco to Boston?

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Why should you use Cheapflights to find cheap flight tickets from San Francisco to Boston?

Cheapflights simply makes it quick and affordable to book flights from San Francisco to Boston by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from San Francisco to Boston with no change fees?

Need flexible booking options for your flight to Boston from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Francisco to Boston become cheaper?

Of course! You can now track prices for flights from San Francisco to Boston and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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