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 Tuesday

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 2022: 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
Rainfall
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

$184

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.
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.

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 in the evening. Doing so could potentially save you 15% on the flight price compared to flying at noon, which is usually more expensive.

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 May, June 2022

The best prices found for BOS to SFO flights for May, June
14 Jun - 21 Jun
$134pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
14 Jun - 21 Jun
$150pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
     
3 STOPS
BOS
Boston Logan Intl
14 Jun - 21 Jun
$161pp
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 2022 flight deals

Cheap flights to San Francisco from Boston found for this year
14 Jun - 21 Jun
$134pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
14 Jun - 21 Jun
$150pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
     
3 STOPS
BOS
Boston Logan Intl
14 Jun - 21 Jun
$161pp
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
15 Jun - 22 Jun
$237pp
BOS
Boston Logan Intl
JetBlue
Non-Stop
SFO
San Francisco
SFO
San Francisco
JetBlue
Non-Stop
BOS
Boston Logan Intl
14 Jun - 21 Jun
$259pp
BOS
Boston Logan Intl
Alaska Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
Non-Stop
BOS
Boston Logan Intl
15 Jun - 22 Jun
$261pp
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 Jun - 7 Jun
$464pp
BOS
Boston Logan Intl
Multiple Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
American Airlines
 
1 STOP
BOS
Boston Logan Intl
1 Jun - 1 Oct
$491pp
BOS
Boston Logan Intl
United Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
United Airlines
Non-Stop
BOS
Boston Logan Intl
1 Jun - 24 Aug
$493pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Sun Country Air
 
1 STOP
BOS
Boston Logan Intl

One-way flights to San Francisco from Boston

The cheapest one-way flights from Boston to San Francisco
2:40 am - 8:24 am
American Airlines
1 Stop
8h 44m
BOS - SFO
American Airlines
12:00 pm - 8:43 pm
JetBlue
1 Stop
11h 43m
BOS - SFO
JetBlue
2:15 am - 8:00 am
United Airlines
1 Stop
8h 45m
BOS - SFO
United Airlines
$198
United

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 23m for a nonstop flight. There are 44 flights from Logan Intl to San Francisco per day from 11 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 JetBlue, United Airlines, 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 $134, but on average you can expect to pay $190.

Are there nonstop flights from Boston to San Francisco for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to San Francisco under $300. A good price for a nonstop flight from Boston to San Francisco is less than $314.

Are there last-minute flights available from Boston to San Francisco for under $500?

There are currently 20+ open flights from Boston to San Francisco within the next 7 days for less than $500.

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

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

How popular is this Boston to San Francisco flight route?

Flights from Boston Logan Intl to San Francisco have been viewed 68 times in the past calendar month.

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

On average 20 flights depart from Boston to San Francisco per day.
Morning (6am - Noon) - 70% of flight departures
Afternoon (Noon - 6pm) - 10% of flight departures
Evening (6pm - Midnight) - 20% of flight departures

How long is the flight from Boston to San Francisco?

For as low as $230, Alaska Airlines can have you in San Francisco from Boston in 6h 30m. 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, Alaska Airlines ($230), JetBlue ($237), and American Airlines ($249) offers the cheapest pricing from Boston to San Francisco. Alaska Airlines is currently priced 24% 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 $138 on American Airlines. Other airlines that offer cheap prices include JetBlue from $139 and United Airlines from $145 one-way.

What are the cheapest flights from Boston to San Francisco?

On average you can expect to pay $1,146 for a flight from Boston to San Francisco. The cheapest flight overall is $180 while the most popular route, (Boston Logan Intl - San Francisco) is currently priced at $276.

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: ANA (100%), EL AL (93%), Asiana Airlines (92%).

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 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) 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 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) 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 03m
Average temperature for May in San Francisco
69.8 °F
Avg rainfall for May in San Francisco
0.6 ″

Airports servicing Boston

Airports servicing San Francisco

Top 9 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
Juneyao Airlines
$12 $18 No cancel fee 66%

We couldn't confirm the COVID-19 safety measures taken by Juneyao Airlines. Please check directly on their website for additional information.

Spirit Airlines
$84 $274 No cancel fee 65%
Alaska Airlines
$113 $307 No cancel fee 75%
Frontier
$114 $270 No cancel fee 62%
Delta
$124 $315 No cancel fee N/A
United Airlines
$138 $397 No cancel fee 69%
JetBlue
$144 $435 No cancel fee 62%
American Airlines
$163 $402 No cancel fee 71%
Sun Country Air
$194 $415 No cancel fee 83%

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 46% of BOS to SFO departures
Morning 6 AM to noon 22% of BOS to SFO departures
Early morning Midnight to 6 AM 19% of BOS to SFO departures
Evening 6 PM to midnight 13% 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
42 daily flights
Monday
42 daily flights
Tuesday
42 daily flights
Wednesday
49 daily flights
Thursday
51 daily flights
Friday
46 daily flights
Saturday
39 daily flights
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