Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Boston to San Francisco
The cheapest flights right now
Boston – San Francisco
Outbound – Nov 5, 2026
direct
6h 46m Return – Nov 11, 2026
direct
5h 35m $339
3 days ago
Boston – San Francisco
Outbound – Nov 3, 2026
direct
6h 45m Return – Nov 10, 2026
direct
5h 34m $341
3 days ago
Boston – San Francisco
Outbound – Nov 5, 2026
direct
6h 40m Return – Nov 12, 2026
direct
5h 34m $340
3 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$280
Average price of a round trip
$347
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
6h32
A flight from Boston to San Francisco takes on average 6h32.
Best time
July
According to user searches, the ideal month to go to San Francisco is July.
The best flight deals for a week
Boston – San Francisco
Outbound – Nov 3, 2026
direct
6h 45m Return – Nov 10, 2026
direct
5h 34m $341
3 days ago
Boston – San Francisco
Outbound – Nov 3, 2026
direct
6h 45m Return – Nov 9, 2026
direct
5h 41m $360
3 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Tips for finding a cheap flight from Boston to San Francisco
Check out our tips for booking your flight to San Francisco (USA) from Boston (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is September, with an average flight ticket price of $288 (calculation over the last two years). The most touristic season corresponds to the months of October, September and November.
For the cheapest flights, it is advisable to buy your ticket at least 23 days before the departure date.
The airline offering the cheapest flight tickets is JetBlue. A ticket from the airline JetBlue to San Francisco costs on average $337.
The airlines that offer the most flights are JetBlue, United Airlines and JetBlue.
Price of flight tickets from Boston to San Francisco
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $280 to $713
- The average price of a flight ticket is about $347
- Prices are lowest for stays in the month of September
- The month in which booking a ticket is cheaper is: October
info departure city :
Boston, USA
airport :
Boston-Logan International Airport (BOS)
local time :
Boston is a city in the country USA, the time zone is [[timezone]]. In Boston, it is currently {fromLocalTime}, the temperature is on average 14°C, with a minimum of 10°C and a maximum of 17°C.
The city of Boston has 1 airport(s): Boston-Logan
destination info :
San Francisco, USA
airport :
San Francisco International Airport (SFO)
local time :
San Francisco is in the country USA, the time zone is [[timezone]]. In San Francisco, it is currently {toLocalTime}, the temperature is on average 18°C, with a minimum of 16°C and a maximum of 24°C.
The city of San Francisco has 1 airport(s): San Francisco
Useful info about San Francisco
What is the least touristic period to go to San Francisco?
If you want to visit San Francisco during the least touristic period, choose the month of July.
What is the most popular time to travel to San Francisco?
In San Francisco, the most popular month is October. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Boston to San Francisco?
According to our data, it is recommended to book your flight 23 days before your departure. If you book your flight ticket 4 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Boston to San Francisco is Saturday.
What are the arrival and destination airports when traveling between Boston and San Francisco?
When you leave, you can leave from Boston-Logan, and you will arrive at Oakland, San Francisco or San Jose-Norman Y. Mineta.
How to reach Boston airport from the city centre?
This information is not available at this time.
Are there other means of transportation to go from Boston to San Francisco?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Boston and San Francisco?
In summer, the average temperature is 17°C in San Francisco and 22°C in Boston. The average rainfall in summer is 2 mm in San Francisco and 106 mm in Boston. In summer, it is warmer in Boston and it rains less in San Francisco. In winter, it is colder in San Francisco and it rains more in Boston.
