SFO

$114 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 2/25. 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
$217
Overall average: $342
Alaska Airlines
ד' 2/25ג' 3/3
BOS - SFO • 1 stop
Cheapest non-stop
$222
Typical prices: $255-$495
JetBlue
ה' 2/19ד' 2/25
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

ד', פב​​​​​​​' 25 - ג', מרץ 3
Alaska Airlines Logo
4:36 pm - 11:44 pm
BOS
-
SFO
10h 08m
1 stop
Alaska Airlines Logo
11:34 am - 11:59 pm
SFO
-
BOS
9h 25m
1 stop
$217Alaska Airlines
ה', פב​​​​​​​' 19 - ד', פב​​​​​​​' 25
Alaska Airlines Logo
4:36 pm - 11:44 pm
BOS
-
SFO
10h 08m
1 stop
Alaska Airlines Logo
6:40 am - 5:24 pm
SFO
-
BOS
7h 44m
1 stop
$218Alaska Airlines
ג', מרץ 31 - ג', אפר' 7
Multiple Airlines Logo
9:15 pm - 12:59 am
BOS
-
SFO
6h 44mnonstop
Multiple Airlines Logo
10:03 pm - 11:45 am
SFO
-
BOS
10h 42m
1 stop
$219Multiple Airlines
ש', פב​​​​​​​' 28 - ג', מרץ 3
Frontier Logo
12:35 pm - 8:03 am
BOS
-
SFO
22h 28m
2 stops
Frontier Logo
10:55 pm - 1:13 am
SFO
-
BOS
23h 18m
1 stop
$220Frontier
ש', מאי 9 - ד', מאי 13
Frontier Logo
6:00 am - 4:54 pm
BOS
-
SFO
13h 54m
1 stop
Frontier Logo
10:38 pm - 11:45 am
SFO
-
BOS
10h 07m
1 stop
$221Frontier
ה', פב​​​​​​​' 19 - ד', פב​​​​​​​' 25
JetBlue Logo
8:33 pm - 12:25 am
BOS
-
SFO
6h 52mnonstop
JetBlue Logo
8:44 pm - 5:15 am
SFO
-
BOS
5h 31mnonstop
$222JetBlue
ש', פב​​​​​​​' 28 - ה', מרץ 5
United Airlines Logo
5:50 pm - 9:50 pm
BOS
-
SFO
7h 00mnonstop
United Airlines Logo
9:30 pm - 6:08 am
SFO
-
BOS
5h 38mnonstop
$223United Airlines
ג', מרץ 3 - ד', מרץ 11
Multiple Airlines Logo
4:40 pm - 8:29 pm
BOS
-
SFO
6h 49mnonstop
Multiple Airlines Logo
10:38 pm - 11:41 am
SFO
-
BOS
10h 03m
1 stop
$224Multiple Airlines
ג', מאי 5 - ו', מאי 15
United Airlines Logo
6:05 am - 12:30 pm
BDL
-
SFO
9h 25m
1 stop
United Airlines Logo
11:56 pm - 10:54 am
SFO
-
BDL
7h 58m
1 stop
$287United Airlines
ה', פב​​​​​​​' 26 - ב', מרץ 2
JetBlue Logo
12:07 pm - 8:29 pm
HYA
-
SFO
11h 22m
1 stop
JetBlue Logo
8:44 pm - 11:02 am
SFO
-
HYA
11h 18m
1 stop
$605JetBlue
Useful Info

Good to know

Low seasonSeptember
Cheapest flight$114
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 1% 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
Capitola
Pacifica
Millbrae
Campbell
Mill Valley
Newark
Novato
Windsor
Union City
Richmond
Belmont
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)