Cheap flights from Boston to San Francisco
Fares from $100 in December 2026. Compare every month below, then book with the site you like.
Search Boston → San Francisco flightsCheapest Boston to San Francisco fares by month
Lowest price per person found in recent searches. Prices change often and are checked when you book.
- October 2026Oct 31 · one way · JetBlue · 1 stop$259See deal
- November 2026Nov 20 · one way · JetBlue · 1 stop$151See deal
- December 2026Dec 16 · one way · JetBlue · 1 stop$100See deal
- February 2027Feb 2 · one way · JetBlue · 1 stop$102See deal
- June 2027Jun 19 · one way · Alaska Airlines · 1 stop$226See deal
Boston to San Francisco at a glance
- Distance2,698 miles
- Nonstop flight timeabout 6h 15m
- Cheapest monthDecember 2026
- Airport codesBOS → SFO
Plan your San Francisco trip
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Travel guides
Frequently asked questions
- How much is a flight from Boston to San Francisco?
- The cheapest fare we found recently is $100 per person, departing Dec 16 on JetBlue. Prices change daily, so search your dates to see today's fares.
- What is the cheapest month to fly from Boston to San Francisco?
- December 2026 is currently the cheapest month, from $100. October 2026 is the most expensive, from $259.
- Are there direct flights from Boston to San Francisco?
- The cheapest fares we found recently have at least one stop. Nonstop flights may still exist at a higher price; tick "Direct only" in the search to check.
- Which airlines fly from Boston to San Francisco?
- The cheapest recent fares on this route were on JetBlue, Alaska Airlines.
- How long is the flight from Boston to San Francisco?
- Boston and San Francisco are about 2,698 miles apart, so a nonstop flight takes roughly 6h 15m. Flights with a stop take longer, depending on the connection.
- How do I find the cheapest flight from Boston to San Francisco?
- Search your dates on Gotoesy. We list fares from several booking sites sorted cheapest first, show nearby dates when your day has no saved fare, and send you straight to the seller to book.
More flights from Boston
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- Boston to Houston
- Boston to Seattle
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More flights to San Francisco
- New York to San Francisco
- Los Angeles to San Francisco
- Chicago to San Francisco
- Miami to San Francisco
- Orlando to San Francisco
- Las Vegas to San Francisco
- Washington, D.C. to San Francisco
- Atlanta to San Francisco
- Dallas to San Francisco
- Houston to San Francisco
- Seattle to San Francisco
- Denver to San Francisco