Flights Boston-San Francisco

Find cheap Boston - San Francisco flights with our free flight search engine. Compare all available fares for direct flights to San Francisco. Search and find the best fares and deals for flights from Boston to San Francisco. Find cheap flights to San Francisco (BOS - SFO) among many online travel agencies, traditional airlines as well as low cost carriers.

Jetcost is a price comparison service for flights to San Francisco airport. You can also compare hotels in San Francisco and San Francisco car rentals.

Lowest round trip fares found for Boston to San Francisco flights

Flight

Airline name

Price

Type

Trip dates

Search date

Boston - San Francisco United Airlines $249 Round-trip 20 September 27 September
Boston - San Francisco United Airlines $249 Round-trip 28 April 09 May
Boston - San Francisco Sun Country Airlines $291 Round-trip 28 April 02 May

Recent flight searches Boston - San Francisco

Flight

Airline name

Price

Type

Trip dates

Search date

Provider

Boston - San Francisco United Airlines $338 Round-trip 14 to 18 July Today 14:19
Boston - San Francisco United Airlines $434 Round-trip 08 to 15 April Today 07:56
Boston - San Francisco Spirit Airlines $209 One-way 04 April Today 05:10
Boston - San Francisco Alaska Airlines $413 Round-trip 04 April to 23 August Today 05:09
Boston - San Francisco United Airlines $639 Round-trip 15 to 22 April Today 04:45
Compare flights from Boston to San Francisco on regular or low cost flights and find the best BOS - SFO flight prices on Jetcost.
Weather forecast for San Francisco
  • Thursday 23
    Min 50 °F
    Max 53 °F
  • Friday 24
    Min 50 °F
    Max 59 °F
  • Saturday 25
    Min 48 °F
    Max 60 °F
  • Sunday 26
    Min 51 °F
    Max 57 °F
  • Monday 27
    Min 50 °F
    Max 57 °F
Climate in San Francisco
  • Cold
     
     
     
     
    Hot
  •  
    Rain (mm)
    Days of rain
  • January
    48 °F
    76.00
    14
  • February
    51 °F
    93.00
    13
  • March
    55 °F
    48.00
    10
  • April
    57 °F
    32.00
    8
  • May
    66 °F
    24.00
    4
  • June
    69 °F
    2.00
    2
  • July
    73 °F
    2.00
    2
  • August
    73 °F
    14.00
    2
  • September
    69 °F
    1.00
    1
  • October
    64 °F
    24.00
    5
  • November
    55 °F
    42.00
    8
  • December
    48 °F
    105.00
    14