Cheap flights from Boston, MA to San Francisco, CA

Flights starting at $87. Choose between United Airlines, JetBlue Airways, or Alaska Airlines to find the best price.

One search, all the flights

We find you the best flight deals and travel hacks so that you can choose how to book.

Rise above all travel anxieties

With the Kiwi.com Guarantee we have your back with whatever happens.

Trusted by millions

Join over 10 million yearly travellers booking with ease.

The distance between Boston and San Francisco is 4347 km. The most popular airlines for this route are United Airlines, JetBlue Airways, Alaska Airlines, Frontier Airlines, and Sun Country Airlines. Boston and San Francisco have 84 direct flights per week. When you arrive at San Francisco, consider visiting Alcatraz, Big Sur, and Golden Gate Bridge.

Weekly direct flights

Discover the top airlines offering direct flights from Boston to San Francisco in the next month. You’ll find the number of daily direct flights per airline in the table.

Weekly direct flights for Sun 17.11 - Sat 23.11

AirlineSun 17.11Mon 18.11Tue 19.11Wed 20.11Thu 21.11Fri 22.11Sat 23.11
4555334
4---44541
11111---1

Weekly direct flights for Sun 24.11 - Sat 30.11

AirlineSun 24.11Mon 25.11Tue 26.11Wed 27.11Thu 28.11Fri 29.11Sat 30.11
453441---
5---5532---
11---1---------

Weekly direct flights for Sun 01.12 - Sat 07.12

AirlineSun 01.12Mon 02.12Tue 03.12Wed 04.12Thu 05.12Fri 06.12Sat 07.12
------15555
---------2442
---------111---

Weekly direct flights for Sun 08.12 - Sat 14.12

AirlineSun 08.12Mon 09.12Tue 10.12Wed 11.12Thu 12.12Fri 13.12Sat 14.12
2555555
144444---
111111---

Check-in for a flight from Boston to San Francisco

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUAYes
JetBlue AirwaysJBUB6No
Alaska AirlinesASAASNo
Frontier AirlinesFFTF9No
Sun Country AirlinesSCXSYYes

Weather in San Francisco

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January14°C7°C
February15°C8°C
March15°C8°C
April17°C9°C
May19°C10°C
June21°C12°C
July22°C13°C
August22°C14°C
September23°C14°C
October21°C13°C
November17°C10°C
December13°C8°C
Hottest Month
23°C
September
Coldest month
7°C
January
Sunny days
333
days per year

14 day forecast

Wednesday
20 Nov
70%
13°C12°C
27 Nov
12°C9°C
Thursday
21 Nov
88%
14°C13°C
28 Nov
13°C9°C
Friday
22 Nov
76%
14°C13°C
29 Nov
11°C10°C
Saturday
23 Nov
86%
14°C11°C
30 Nov
85%
12°C10°C
Sunday
24 Nov
84%
10°C9°C
1 Dec
89%
11°C8°C
Monday
25 Nov
88%
13°C9°C
2 Dec
88%
11°C9°C
Tuesday
26 Nov
81%
13°C11°C
3 Dec
9°C7°C

Frequently asked questions

How long does it take to travel from Boston to San Francisco?
What is the flight distance between Boston and San Francisco?
What airlines offer nonstop (direct) flights between Boston and San Francisco?
What are the most popular routes to and from Boston?
What are the most popular routes to and from San Francisco?
What airports are near Boston?
What airports are near San Francisco?
Which airlines fly between Boston and San Francisco?
When's the best time to travel between Boston and San Francisco?
What flights operate between Boston and San Francisco?
How many airports are there near Boston?
How many airports are there near San Francisco?
What time do nonstop (direct) flights between Boston and San Francisco depart?
What time do nonstop (direct) flights between Boston and San Francisco arrive?
What time do flights between Boston and San Francisco depart?
What time do flights between Boston and San Francisco arrive?

Explore alternative trips

Flights from Boston

Flights to San Francisco

Popular routes

The nearest countries with flights to San Francisco

Here is a list of countries people are flying from

Other destination countries from Boston

Here is a list of countries people are flying to
Find the best connection from Boston to San Francisco
Search flights
We hack the system,
you fly for less