SFO

$139 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 4/2. 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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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

Thu, Apr 9 - Mon, Apr 13
Frontier Logo
5:30 am - 7:19 pm
BOS
-
SFO
16h 49m
1 stop
Frontier Logo
10:03 pm - 11:45 am
SFO
-
BOS
10h 42m
1 stop
$255Frontier
Thu, Apr 2 - Tue, Apr 7
Frontier Logo
5:30 am - 7:14 pm
BOS
-
SFO
16h 44m
1 stop
Frontier Logo
10:03 pm - 11:44 am
SFO
-
BOS
10h 41m
1 stop
$256Frontier
Wed, Apr 29 - Tue, May 5
Multiple Airlines Logo
6:00 am - 5:34 pm
BOS
-
SFO
14h 34m
1 stop
Multiple Airlines Logo
10:25 am - 11:59 pm
SFO
-
BOS
10h 34m
1 stop
$259Multiple Airlines
Fri, Apr 3 - Mon, Apr 13
Frontier Logo
5:30 am - 7:14 pm
BOS
-
SFO
16h 44m
1 stop
Frontier Logo
10:03 pm - 11:45 am
SFO
-
BOS
10h 42m
1 stop
$260Frontier
Wed, Apr 29 - Wed, May 6
Southwest Logo
2:25 pm - 11:15 pm
BOS
-
SFO
11h 50m
2 stops
Southwest Logo
7:15 pm - 8:05 am
SFO
-
BOS
9h 50m
2 stops
$261Southwest
Mon, Apr 13 - Sun, Apr 19
Multiple Airlines Logo
6:00 am - 12:47 pm
BOS
-
SFO
9h 47m
1 stop
Multiple Airlines Logo
10:38 pm - 11:25 am
SFO
-
BOS
9h 47m
1 stop
$262Multiple Airlines
Thu, Apr 9 - Wed, Apr 15
Hawaiian Airlines Logo
6:00 am - 12:47 pm
BOS
-
SFO
9h 47m
1 stop
Hawaiian Airlines Logo
6:40 pm - 5:53 am
SFO
-
BOS
8h 13m
1 stop
$268Hawaiian Airlines
Wed, Apr 15 - Mon, Apr 20
United Airlines Logo
5:10 pm - 12:39 am
BDL
-
SFO
10h 29m
1 stop
United Airlines Logo
9:30 pm - 9:37 am
SFO
-
BDL
9h 07m
1 stop
$301United Airlines
Wed, Apr 15 - Mon, Apr 20
Southwest Logo
12:50 pm - 10:05 pm
BDL
-
SFO
12h 15m
2 stops
Southwest Logo
9:15 pm - 8:10 am
SFO
-
BDL
7h 55m
1 stop
$306Southwest
Wed, May 6 - Sun, May 10
United Airlines Logo
6:05 am - 12:30 pm
BDL
-
SFO
9h 25m
1 stop
United Airlines Logo
10:55 pm - 9:55 am
SFO
-
BDL
8h 00m
1 stop
$321United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$139
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 7% lower on average.
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
Rohnert Park
Marina
Emeryville
Pacifica
Capitola
Millbrae
Campbell
Newark
Mill Valley
Novato
Windsor
Union City
Belmont
Richmond
West Sacramento
American Canyon
Corte Madera
Los Altos
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)