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

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The best prices from Boston to San Francisco International are usually found in September or October, booked 53 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 International (SFO)

BOS - SFO
Price
$277 - $403
Popular in December High demand for flights, 20% potential price rise
Cheapest in September Best time to find cheap flights, 14% potential price drop
Round-trip from $277 From Boston to San Francisco International
One-way from $106 One-way flight from Boston to San Francisco International
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Boston to San Francisco International?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 37% on the overall cost on flights from Boston to San Francisco International.

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

Users have found that booking a flight from Boston to San Francisco International at least 44 days early can save you up to 20% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from Boston to San Francisco International for as little as $117 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $137 for flights departing within the next 3 days.

What is the cheapest month to fly from Boston to San Francisco International?

February can be a great time to fly to San Francisco International from Boston with a flight ticket averaging about $121. Cheapflights users have found deals in the month of February for as cheap as $61. The most expensive prices can be found in the month of April.

Cheap flights from Boston to San Francisco International in July, August 2020

The best prices found for BOS to SFO flights for July, August
28 Jul - 12 Aug
$205pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
29 Jul - 10 Aug
$206pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
30 Jul - 15 Aug
$212pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl

Boston to San Francisco International 2020 flight deals

Cheap flights to San Francisco International from Boston found for this year
12 Aug - 17 Aug
$192pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
28 Jul - 11 Aug
$205pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
29 Jul - 11 Aug
$206pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl

Non-stop flights to San Francisco International from Boston

Save time with Boston to San Francisco International direct flight deals
17 Aug - 17 Aug
$271pp
BOS
Boston Logan Intl
JetBlue
Non-Stop
SFO
San Francisco
SFO
San Francisco
JetBlue
Non-Stop
BOS
Boston Logan Intl
14 Jul - 28 Jul
$277pp
BOS
Boston Logan Intl
Multiple Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
Non-Stop
BOS
Boston Logan Intl
13 Jul - 22 Jul
$287pp
BOS
Boston Logan Intl
Multiple Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
JetBlue
Non-Stop
BOS
Boston Logan Intl

Last minute flights from Boston to San Francisco International

Late deals on round-trip flights to San Francisco International from Boston, departing today and this week
28 Jun - 9 Jul
$280pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
28 Jun - 7 Jul
$294pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
25 Jun - 7 Jul
$297pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
JetBlue
Non-Stop
BOS
Boston Logan Intl

One-way flights to San Francisco International from Boston

The cheapest one-way flights from Boston to San Francisco International
4:00 am - 7:39 am
JetBlue
Nonstop
6h 39m
BOS - SFO
JetBlue
1:30 pm - 5:43 am
Multiple Airlines
1 Stop
19h 13m
BOS - SFO
Multiple Airlines
$106
Kiwi.com
1:25 pm - 4:05 am
Multiple Airlines
1 Stop
17h 40m
BOS - SFO
Multiple Airlines
$109
Kiwi.com

Related info for your journey

Useful info, stats and facts about Boston to San Francisco International flights.

Flight FAQs

From Boston to San Francisco International

Are flight prices decreasing from Boston to San Francisco due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Boston and San Francisco for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

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

Yes, there are multiple flights from Boston to San Francisco International for under $200. The cheapest flight booked recently is on Multiple Airlines for just $192, but on average you can expect to pay $219.

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

Cheapflights has at least 20 direct flights from Boston to San Francisco International under $300. A good price for a nonstop flight from Boston to San Francisco International is less than $309.

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

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

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

Nonstop flights can be found on the following days: Sunday, Friday, Saturday.

How popular is this flight route?

Flights from Boston Logan Intl to San Francisco have been viewed 319 times in the past calendar month.

What is the cheapest airline for this route?

United Air Lines Inc. offers the cheapest flights from Boston to San Francisco. Per day you can find on average 140 flights for this route and airline.

How long does the flight from Boston to San Francisco International take?

A nonstop flight takes up to 7 hours, covering a distance of 1,685 miles.

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

On average, you can expect to see 5 flights from Boston Logan Intl to San Francisco a day.
Early Morning (Midnight to 6am) - 40% of flight departures
Afternoon (Noon - 6pm) - 40% of flight departures
Evening (6pm - Midnight) - 20% of flight departures

Does it rain more in Boston or San Francisco?

Expected rainfall in Boston is less than in San Francisco. You can expect this to be the case over the next 13 days.

Is Boston weather warmer or cooler than San Francisco?

Temperatures around the 84 °F's can be experienced in July. The weather in San Francisco is colder than in Boston. Plan for potential changes in flight availability as peak weather approaches in this location.

Alternative routes for Boston to San Francisco International

Destination information for San Francisco International

Things to know before you go. Useful info for your trip from Boston to San Francisco International

Airports servicing Boston

Airports servicing San Francisco

Hourly flight availability from Boston to San Francisco International

Afternoon Noon to 6 PM 60% of BOS to SFO departures
Morning 6 AM to noon 26% of BOS to SFO departures
Evening 6 PM to midnight 13% of BOS to SFO departures
Early morning Midnight to 6 AM 1% of BOS to SFO departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Boston to San Francisco International
Sunday
9 daily flights
Monday
11 daily flights
Tuesday
9 daily flights
Wednesday
12 daily flights
Thursday
10 daily flights
Friday
13 daily flights
Saturday
7 daily flights