Cheap flights from Boston to San Francisco (BOS - SFO)

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The best prices from Boston Logan Intl to San Francisco are usually found in January or February, booked 34 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

How to find the cheapest flight from
Boston (BOS) to San Francisco (SFO)

All the information you need to plan the best BOS to SFO flight in 2021: compare Boston to San Francisco flight prices with the expected peak season, weather and rainfall in San Francisco.
BOS - SFO
Price
$267 - $403
SFO
Temperature
51.8 - 62.6 °F
SFO
Precipitation
0 - 4.4 inches

Popular in

December

High demand for flights, 25% potential price rise

Cheapest in

January

Best time to find cheap flights, 12% potential price drop

Round-trip from

$267

From Boston Logan Intl to San Francisco

One-way from

$96

One-way flight from Boston Logan Intl to San Francisco

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from Boston to San Francisco (BOS - SFO)?

It’s typically best to fly out from Boston to San Francisco at noon. Doing so could potentially save you 37% on the flight price compared to flying in the afternoon, which is usually more expensive.

How far in advance should I book a flight from Boston to San Francisco?

To save up to 105% on this flight, we recommend booking at least 32 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Boston to San Francisco from $412 1-2 weeks out and tickets from $615 for flights departing within the next 72 hours.

What is the cheapest day to fly round-trip from Boston to San Francisco?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Francisco. Check prices with Cheapflights to find a great deal for your trip.

Cheap flights from Boston to San Francisco in October, November 2021

The best prices found for BOS to SFO flights for October, November
16 Nov - 23 Nov
$146pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
16 Nov - 23 Nov
$163pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
     
3 STOPS
BOS
Boston Logan Intl
15 Nov - 22 Nov
$176pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
     
3 STOPS
BOS
Boston Logan Intl

Boston Logan Intl to San Francisco 2021 flight deals

Cheap flights to San Francisco from Boston found for this year
16 Nov - 23 Nov
$146pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
16 Nov - 23 Nov
$163pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
     
3 STOPS
BOS
Boston Logan Intl
15 Nov - 22 Nov
$176pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
     
3 STOPS
BOS
Boston Logan Intl

Non-stop flights to San Francisco from Boston

Save time with Boston to San Francisco direct flight deals
14 Jan - 18 Jan
$193pp
BOS
Boston Logan Intl
Alaska Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
Non-Stop
BOS
Boston Logan Intl
4 Dec - 8 Dec
$197pp
BOS
Boston Logan Intl
Alaska Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
Non-Stop
BOS
Boston Logan Intl
2 Dec - 8 Dec
$217pp
BOS
Boston Logan Intl
Alaska Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
Non-Stop
BOS
Boston Logan Intl

Last minute flights from Boston to San Francisco

Late deals on round-trip flights to San Francisco from Boston, departing today and this week
3 Nov - 16 Nov
$205pp
BOS
Boston Logan Intl
Multiple Airlines
     
3 STOPS
SFO
San Francisco
SFO
San Francisco
United Airlines
Non-Stop
BOS
Boston Logan Intl
3 Nov - 16 Nov
$206pp
BOS
Boston Logan Intl
Multiple Airlines
     
3 STOPS
SFO
San Francisco
SFO
San Francisco
JetBlue
 
1 STOP
BOS
Boston Logan Intl
3 Nov - 15 Nov
$214pp
BOS
Boston Logan Intl
Multiple Airlines
     
3 STOPS
SFO
San Francisco
SFO
San Francisco
United Airlines
 
1 STOP
BOS
Boston Logan Intl

One-way flights to San Francisco from Boston

The cheapest one-way flights from Boston to San Francisco
11:25 am - 5:59 pm
Major Airline
1 Stop
9h 34m
BOS - SFO
Major Airline
$96
StudentUniverse
11:45 am - 3:46 pm
Alaska Airlines
Nonstop
7h 01m
BOS - SFO
Alaska Airlines
$102
mytrip.com
1:00 am - 2:04 pm
American Airlines
2 Stops
16h 04m
BOS - SFO
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Boston</span> to <span class="emphasized">San Francisco</span> flights.

Flight FAQs

From Boston to San Francisco

What airports do I use to fly from Boston to San Francisco?

If you book a flight from Boston to San Francisco, you will be flying from Logan Intl to San Francisco. Flights to San Francisco (SFO) from Boston Logan Intl (BOS) take 6h 24m for a nonstop flight. There are 28 flights from Logan Intl to San Francisco per day from 9 airlines.

Which airlines flying from Boston Logan Intl to San Francisco have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, JetBlue, and Delta flying from Boston Logan Intl to San Francisco have implemented new flexible cancellation policies.

Can I find flights from Boston to San Francisco for under $200 on Cheapflights?

Yes, there are multiple flights from Boston to San Francisco for under $200. The cheapest flight booked recently is on Multiple Airlines for just $146, but on average you can expect to pay $190.

Are there nonstop flights from Boston to San Francisco for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to San Francisco under $200. A good price for a nonstop flight from Boston to San Francisco is less than $237.

Are there last-minute flights available from Boston to San Francisco for under $300?

There are currently 20+ open flights from Boston to San Francisco within the next 7 days for less than $300.

What days are nonstop flights available from Boston to San Francisco?

Days when nonstop flights are available for this flight are: Sunday, Wednesday, Thursday, Friday, Saturday.

How popular is this Boston to San Francisco flight route?

Flights from Boston Logan Intl to San Francisco have been viewed 318 times in the past calendar month.

How many flights depart from Boston to San Francisco on average per day?

On average 29 flights depart from Boston to San Francisco per day.
Early Morning (Midnight to 6am) - 7% of flight departures
Morning (6am - Noon) - 28% of flight departures
Evening (6pm - Midnight) - 66% of flight departures

How long is the flight from Boston to San Francisco?

For as low as $190, Major Airline can have you in San Francisco from Boston in 7h 01m. The distance between Boston and San Francisco is about 2712 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from Boston to San Francisco round-trip?

According to our current data, Major Airline ($190), Alaska Airlines ($197), and JetBlue ($198) offers the cheapest pricing from Boston to San Francisco. Major Airline is currently priced 37% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Boston to San Francisco one-way?

One-way options have recently been found by users for as low as $66 on Alaska Airlines. Other airlines that offer cheap prices include Major Airline from $96 and JetBlue from $100 one-way.

What are the cheapest flights from Boston to San Francisco?

On average you can expect to pay $693 for a flight from Boston to San Francisco. The cheapest flight overall is $118 while the most popular route, (Boston Logan Intl - San Francisco) is currently priced at $198.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to San Francisco on time: Qantas Airways (100%), Fiji Airways (94%), Alaska Airlines (94%).

What are the most popular airlines that fly from Boston to San Francisco?

Before booking your flight from Boston to San Francisco check out the most popular airlines for this route: Major Airline, American Airlines or Alaska Airlines.

COVID Restrictions

View COVID Travel Restrictions for San Francisco, CA

Do I need a COVID test to fly to San Francisco from Boston?

Information is based on travel restrictions for travel to San Francisco within the United States

Most visitors from Boston Logan Intl need to provide a negative COVID-19 test result and/or quarantine to enter San Francisco.

COVID-19 testing requirements
Visitors from Boston Logan Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Francisco.

Quarantine requirements
Visitors from Boston Logan Intl are not required to quarantine after entering San Francisco.

Do I need a test to fly back to Boston from San Francisco?

Returning to Boston Logan Intl from San Francisco

COVID-19 testing requirements
Visitors from San Francisco must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Boston Logan Intl.

Quarantine requirements
Visitors from San Francisco are not required to quarantine after entering Boston Logan Intl.

Hide COVID Travel Restrictions for San Francisco, CA

Alternative routes for Boston to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Francisco

Things to know before you go - useful duration and weather info for your trip from Boston to San Francisco.
Flight duration from BOS to SFO
6h 19m
Average temperature for October in San Francisco
71.6 °F
Avg rainfall for October in San Francisco
1.2 ″

Airports servicing Boston

Airports servicing San Francisco

Top 8 airlines flying from Boston Logan Intl to San Francisco

The chart below displays the airlines Cheapflights users traveling from Boston to San Francisco choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$107 $230 No cancel fee 65%
Alaska Airlines
$108 $286 No cancel fee 75%
Frontier
$114 $270 No cancel fee 62%
Delta
$118 $291 No cancel fee N/A
Sun Country Air
$118 $302 No cancel fee 83%
United Airlines
$118 $353 No cancel fee 69%
American Airlines
$126 $288 No cancel fee 71%
JetBlue
$128 $373 No cancel fee 62%

Hourly flight availability from Boston to San Francisco

See what time of day planes typically take off from Boston towards San Francisco.
Afternoon Noon to 6 PM 53% of BOS to SFO departures
Morning 6 AM to noon 25% of BOS to SFO departures
Early morning Midnight to 6 AM 13% of BOS to SFO departures
Evening 6 PM to midnight 9% of BOS to SFO departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Boston to San Francisco
See how many times per day planes take to the skies headed from Boston to San Francisco.
Sunday
34 daily flights
Monday
32 daily flights
Tuesday
27 daily flights
Wednesday
31 daily flights
Thursday
29 daily flights
Friday
31 daily flights
Saturday
16 daily flights
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