BOS to SFO Flights: Best Deals from Boston to San Francisco
Cheapest flight found
$155
Last updated Mar 13, 2026
Prices by Month
Price History
Tracking the May 7, 2026 departure — the cheapest date we found.
Price Behavior: BOS → SFO
Based on 6 months of fare data collected by Trip Manta.
Lowest Fare
$155
Highest Fare
$242
Median Fare
$209
Price Spread
$87
Prices fluctuate moderately — tracking can help you catch dips.
Cheapest month to fly: May 2026 (from $155)
Most expensive month: August 2026 (from $242)
Biggest price drop caught: $16 between consecutive checks
Most frequent cheapest airline: JetBlue
What This Means for You
Flights from Boston to San Francisco range from $155 to $242, a $87 spread across the months we track. If your dates are flexible, May 2026 tends to have the lowest fares. Prices move enough that tracking can save you money — drops often last only a few hours before the algorithm adjusts back up.
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From
Boston (BOS)
To
San Francisco (SFO)
Airport Information
Boston (BOS)
Boston Logan International Airport (BOS) serves as the primary gateway for New England and is conveniently located just minutes from downtown Boston. As a major hub for JetBlue and a primary focus city for Delta and American Airlines, Logan offers multiple nonstop options to SFO daily. Passengers can enjoy premium lounges, local seafood dining options like Legal Sea Foods, and efficient public transit via the Silver Line or the Blue Line, making it one of the most accessible major airports in the United States.
San Francisco (SFO)
San Francisco International Airport (SFO) is a world-class facility located 13 miles south of downtown San Francisco, acting as a major international gateway and a primary hub for United Airlines. Known for its impressive art installations and the unique Wag Brigade of therapy animals, SFO provides a welcoming atmosphere for weary transcontinental travelers. Getting to the city is seamless via the BART (Bay Area Rapid Transit) system, which connects the terminals directly to the Mission District and Union Square, ensuring a smooth transition into the city.
Frequently Asked Questions
How long is the average flight from Boston to San Francisco?
The average flight time for a direct journey from BOS to SFO is approximately 6 hours and 30 minutes, though eastbound return flights are usually shorter due to tailwinds.
Which airlines offer nonstop flights on this route?
Major carriers including United Airlines, JetBlue, Delta Air Lines, and Alaska Airlines provide daily nonstop service between Boston Logan and San Francisco International.
What is the time difference between Boston and San Francisco?
San Francisco is in the Pacific Time Zone, which is 3 hours behind Boston's Eastern Time Zone.
Is there a public transit connection from SFO to downtown San Francisco?
Yes, the BART (Bay Area Rapid Transit) train departs directly from the International Terminal and reaches downtown San Francisco in about 30 minutes.
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