BOS - SFO Price
|
$267 - $403
|
SFO Temperature
|
59 - 77 °F
|
SFO Rainfall
|
0 - 4.7 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 to San Francisco |
One-way from $71 One-way flight from Boston to San Francisco |
Saturday flights are found to be more expensive to fly from Boston to San Francisco. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Francisco.
To save on the cost of your flight from Boston to San Francisco, book at least 35 days before your planned departure. Booking around this time can save you about 7% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $99 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $105.
The best pricing can be found in the month of August. Prices to San Francisco from Boston average $108. You can even find prices in August for less than $108, as users have found deals to San Francisco from as low as $48. The month of June appears to be one of the more expensive times to travel to San Francisco from Boston. Flying in the targeted month can save you up to 17%.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 33% on flights from Boston to San Francisco by exploring options for tickets at noon.
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 | |
---|---|---|---|---|---|---|
![]() |
$107 | $230 | No cancel fee | 65% | ||
![]() |
$114 | $270 | No cancel fee | 62% | ||
![]() |
$108 | $286 | No cancel fee | 75% | ||
![]() |
$126 | $288 | No cancel fee | 71% | ||
![]() |
$118 | $291 | No cancel fee | N/A | ||
![]() |
$118 | $302 | No cancel fee | 83% | ||
![]() |
$118 | $353 | No cancel fee | 69% | ||
![]() |
$128 | $373 | No cancel fee | 62% |
Morning 6 AM to noon | 70% of BOS to SFO departures |
Afternoon Noon to 6 PM | 30% of BOS to SFO departures |
Early morning Midnight to 6 AM | 0% of BOS to SFO departures |
Evening 6 PM to midnight | 0% of BOS to SFO departures |