SFO

$120 Find Cheap Flights from Massachusetts to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 1/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$221
Overall average: $332
Multiple Airlines
Wed 1/7Fri 1/16
BOS - SFO • 2 stops
Cheapest non-stop
$222
Typical prices: $247-$493
JetBlue
Fri 1/9Tue 1/13
BOS - SFO • Non-stop
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We hope you love your trip to San Francisco!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Massachusetts to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Massachusetts to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Massachusetts to San Francisco

Wed, Jan 7 - Fri, Jan 16
Multiple Airlines Logo
12:29 pm - 8:03 am
BOS
-
SFO
22h 34m2 stops
Multiple Airlines Logo
11:20 pm - 1:13 am
SFO
-
BOS
22h 53m1 stop
$221Multiple Airlines
Fri, Jan 9 - Tue, Jan 13
JetBlue Logo
3:05 pm - 6:55 pm
BOS
-
SFO
6h 50mnonstop
JetBlue Logo
3:25 pm - 11:58 pm
SFO
-
BOS
5h 33mnonstop
$222JetBlue
Wed, Jan 7 - Tue, Jan 13
Frontier Logo
6:00 am - 7:53 am
BOS
-
SFO
28h 53m2 stops
Frontier Logo
11:20 pm - 1:13 am
SFO
-
BOS
22h 53m1 stop
$223Frontier
Mon, Jan 12 - Thu, Jan 15
Frontier Logo
11:41 am - 1:24 pm
BOS
-
SFO
28h 43m2 stops
Frontier Logo
11:20 pm - 1:13 am
SFO
-
BOS
22h 53m1 stop
$224Frontier
Tue, Feb 3 - Tue, Feb 10
Alaska Airlines Logo
4:20 pm - 10:47 pm
BOS
-
SFO
9h 27m1 stop
Alaska Airlines Logo
7:00 am - 5:39 pm
SFO
-
BOS
7h 39m1 stop
$225Alaska Airlines
Wed, Jan 14 - Tue, Jan 20
Alaska Airlines Logo
4:20 pm - 10:47 pm
BOS
-
SFO
9h 27m1 stop
Alaska Airlines Logo
10:16 am - 5:39 pm
SFO
-
BOS
28h 23m1 stop
$226Alaska Airlines
Wed, Jan 7 - Sat, Jan 10
Delta Logo
7:50 am - 11:50 am
BOS
-
SFO
7h 00mnonstop
Delta Logo
7:10 am - 3:51 pm
SFO
-
BOS
5h 41mnonstop
$227Delta
Tue, Jan 13 - Tue, Jan 20
United Airlines Logo
10:05 am - 5:36 pm
ALB
-
SFO
10h 31m1 stop
United Airlines Logo
11:18 am - 11:41 pm
SFO
-
ALB
9h 23m1 stop
$251United Airlines
Tue, Jan 13 - Wed, Jan 21
Delta Logo
2:30 pm - 11:25 pm
ALB
-
SFO
11h 55m1 stop
Delta Logo
5:45 am - 4:19 pm
SFO
-
ALB
7h 34m1 stop
$257Delta
Thu, Jan 15 - Thu, Jan 22
United Airlines Logo
6:00 am - 11:23 am
BDL
-
SFO
8h 23m1 stop
United Airlines Logo
12:55 pm - 11:44 pm
SFO
-
BDL
7h 49m1 stop
$291United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$120
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Boston to San Francisco

Flights from Massachusetts to San Francisco: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Massachusetts to San Francisco 
Learn how KAYAK collects reviews and tips from users.
GeraldFlew with Delta
BOS
-
SFO
Mar 2025
Book a flight early in the morning. The plane & crew will have arrived the previous night
PaulaFlew with Alaska Airlines
BOS
-
SFO
Jul 2024
Get your boarding pass online and save it to your wallet App on the iPhone. Makes it so easy

FAQs for booking flights from Massachusetts to San Francisco

  • How does KAYAK find such low prices on flights from Massachusetts to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Massachusetts to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Massachusetts with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Calistoga
Marina
Rohnert Park
Capitola
Emeryville
Pacifica
Millbrae
Campbell
Mill Valley
Newark
Novato
Windsor
Union City
Belmont
Richmond
West Sacramento
Los Altos
Corte Madera
American Canyon
Jenner

Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco

San Francisco (SFO)