Route Price Intelligence
Cheap Flights From Boston to San Francisco
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$363
Great Deal
Under $346
Typical Range
$346 – $374
Lowest We've Seen
$160
Based on 543 price pointshigh confidence
Monthly Price Guide
Jan
$292
Feb
$363
Mar
$363
Apr
$356
May
$332
Jun
$306
Jul
$317
Aug
$329
Sep
$374
Oct
$374
Nov
$374
Dec
$386
Cheapest Average Expensive
Best Time to Fly from Boston to San Francisco
The cheapest time to fly from Boston to San Francisco is typically January, when fares average around $292. The most expensive month tends to be December at around $386. For the best deals, consider flying in January, June, July.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: January10,960 fares analyzedTypical low: $327
Planning San Francisco?
Best months to go, what a day on the ground costs, and the tours worth booking.
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