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Cheap flights from San Francisco to Boston from C$ 224

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
27 Aug — 3 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or February, booked 62 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from San Francisco to Boston

Enter your travel dates to find the best prices.

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 28 July 2026.

Sat 14/116:00 a.m.
SFO
-
BOS
1 stop7h 47m
JetBlue
Tue 17/114:00 p.m.
BOS
-
SFO
1 stop10h 58m
JetBlue
Deal found 26/7C$ 408
Sat 24/107:03 a.m.
SFO
-
BOS
1 stop19h 18m
Alaska Airlines
Wed 28/107:51 a.m.
BOS
-
SFO
1 stop10h 00m
Alaska Airlines
Deal found 27/7C$ 419
Sat 17/101:00 p.m.
SFO
-
BOS
Nonstop6h 15m
JetBlue
Wed 28/104:00 p.m.
BOS
-
SFO
1 stop10h 58m
JetBlue
Deal found 27/7C$ 434
Wed 14/103:00 p.m.
SFO
-
BOS
Nonstop5h 39m
Delta
Wed 28/1010:05 a.m.
BOS
-
SFO
Nonstop6h 38m
Delta
Deal found 23/7C$ 447
Tue 25/83:18 p.m.
SFO
-
BOS
Nonstop5h 41m
JetBlue
Wed 26/812:44 p.m.
BOS
-
SFO
1 stop9h 29m
JetBlue
Deal found 27/7C$ 448
Sun 6/911:40 a.m.
SFO
-
BOS
Nonstop6h 16m
JetBlue
Tue 22/95:15 a.m.
BOS
-
SFO
1 stop8h 23m
JetBlue
Deal found 28/7C$ 450
Wed 14/108:20 a.m.
SFO
-
BOS
1 stop18h 01m
Alaska Airlines
Wed 28/107:51 a.m.
BOS
-
SFO
1 stop10h 00m
Alaska Airlines
Deal found 23/7C$ 451
Tue 17/1110:10 p.m.
SFO
-
BOS
Nonstop5h 31m
JetBlue
Wed 18/119:30 a.m.
BOS
-
SFO
Nonstop6h 50m
JetBlue
Deal found 27/7C$ 454
Sat 5/93:03 p.m.
SFO
-
BOS
1 stop12h 06m
Alaska Airlines
Sat 12/98:00 a.m.
BOS
-
SFO
1 stop9h 45m
Alaska Airlines
Deal found 24/7C$ 457
Sat 12/97:50 a.m.
SFO
-
BOS
Nonstop5h 44m
JetBlue
Wed 23/96:09 p.m.
BOS
-
SFO
Nonstop6h 31m
JetBlue
Deal found 28/7C$ 461
Thu 27/812:30 p.m.
SFO
-
BOS
Nonstop5h 48m
JetBlue
Mon 31/84:39 p.m.
BOS
-
SFO
1 stop10h 59m
JetBlue
Deal found 24/7C$ 463
Sat 12/92:00 p.m.
SFO
-
BOS
Nonstop6h 19m
JetBlue
Sat 19/95:00 p.m.
BOS
-
SFO
Nonstop6h 31m
JetBlue
Deal found 28/7C$ 464

Find 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 28 July 2026.

Round-trip from

C$ 408

One-way from

C$ 224

Popular in

June

Cheapest in

January

Average price

C$ 688

Good round-trip deal

C$ 216 or less

Good one-way deal

C$ 216 or less
JetBlue
  • JetBlue
  • 14/11-17/11
  • 2 total stops
  • 18h 45m total
  • San Francisco to Boston
Search Deals
United Airlines
  • United Airlines
  • 15/9
  • Nonstop
  • 5h 52m total
  • San Francisco to Boston
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from San Francisco to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from San Francisco to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize 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 629,999 searches. Data last updated 28 July 2026.
Use the filters below to find and compare flights from San Francisco to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 12/9

12:20 p.m.-9:08 p.m.

Nonstop5h 48m

Boston Logan Intl

Sat 19/9

7:35 a.m.-11:04 a.m.

Nonstop6h 29m

C$ 461

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 10/9

12:20 p.m.-9:08 p.m.

Nonstop5h 48m

Boston Logan Intl

Tue 15/9

5:15 p.m.-8:45 p.m.

Nonstop6h 30m

C$ 477

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 11/9

9:10 p.m.-6:02 a.m.

Nonstop5h 52m

Boston Logan Intl

Mon 14/9

6:00 a.m.-9:30 a.m.

Nonstop6h 30m

C$ 492
Quickest round-trip

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 28/8

3:00 p.m.-11:41 p.m.

Nonstop5h 41m

Boston Logan Intl

Sun 30/8

7:35 a.m.-11:09 a.m.

Nonstop6h 34m

C$ 492

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 25/9

5:16 p.m.-5:47 a.m.

1 stop9h 31m

Boston Logan Intl

Mon 5/10

6:40 p.m.-8:49 a.m.

1 stop17h 09m

C$ 508

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 3/9

12:30 p.m.-12:30 a.m.

1 stop9h 00m

Boston Logan Intl

Wed 9/9

5:25 a.m.-1:15 p.m.

2 stops10h 50m

C$ 511

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 18/11

8:15 a.m.-9:55 p.m.

2 stops10h 40m

Boston Logan Intl

Wed 2/12

3:35 p.m.-11:55 p.m.

2 stops11h 20m

C$ 519

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 2/9

10:59 a.m.-12:32 a.m.

1 stop10h 33m

Boston Logan Intl

Sat 5/9

7:35 a.m.-11:07 a.m.

Nonstop6h 32m

C$ 527

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 11/8

12:30 p.m.-9:18 p.m.

Nonstop5h 48m

Boston Logan Intl

Fri 21/8

3:50 p.m.-7:22 p.m.

Nonstop6h 32m

C$ 532

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 9/9

11:40 p.m.-12:30 p.m.

2 stops9h 50m

Boston Logan Intl

Wed 16/9

5:25 a.m.-1:10 p.m.

2 stops10h 45m

C$ 539

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/7

Showing 1-10 of 24 resultsSorted by cheapest first
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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 round-trip 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?

Booking 61 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, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of C$ 471). Flying from San Francisco to Boston in June is currently the most expensive (average of C$ 707). 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 28 July 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 81% on flights from San Francisco to Boston by exploring options for tickets in the afternoon.

How much does it cost to fly round-trip from San Francisco to Boston?

Airfare is below average for this route at the moment.

San Francisco to Boston flights typically cost between C$ 471 and C$ 769 in November.
The cheapest round-trip price found within the last 5 days was C$ 408 on JetBlue (14 Nov-17 Nov).

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?

    Flights from San Francisco to Boston Logan Intl have been viewed 5 times in the past calendar month.

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

    A quick flight from San Francisco to Boston can take about 5h 41m. JetBlue provides one of the quickest options available for as low as C$ 492. The distance from San Francisco to Boston is about 4339 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Consider ITA Airways (100%), Scandinavian Airlines (87%) or Virgin Australia (83%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to Boston.

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

    On average you can expect to pay C$ 221 for a flight from San Francisco to Boston. The cheapest flight overall is C$ 216 while the most popular route, (San Francisco - Boston Logan Intl) is currently priced at C$ 924.

  • 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 vacation 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, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of C$ 471). Flying from San Francisco to Boston in June is currently the most expensive (average of C$ 707). 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
Old Orchard Beach
Hampton
Merrimack
Saugus
Braintree
Milford
Revere
Waltham
Watertown
Ogunquit
Warwick
Lawrence
Pawtucket
Seekonk
Foxborough
Nashua
Kittery

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