Route Price Intelligence
Cheap Flights From Boston to San Francisco
Live pricing benchmarks, monthly patterns, and historical lows for this route.
San Francisco usually runs about $507 round trip from Providence, and this United fare brings it down to $257, a 49.3% discount close to the $211 record low we've tracked. Wine country day trips, the Golden Gate Bridge, and California's mild winter weather make this an easy sell anytime between now and spring. It's one of the strongest price-to-destination combinations in today's batch.
✓ 10 date combinations found at this price
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Best Time to Fly from Boston to San Francisco
The cheapest time to fly from Boston to San Francisco is typically June, when fares average around $306. The most expensive month tends to be December at around $399. For the best deals, consider flying in June, July, August.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Planning San Francisco?
Best months to go, what a day on the ground costs, and the tours worth booking.
Read the San Francisco guide →