BOS to SFO Flights: Best Deals from Boston to San Francisco

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$173.2

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May 2026AlaskaBOSSFO

Last updated Feb 16, 2026

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Tracking the May 7, 2026 departure — the cheapest date we found.

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Boston (BOS)

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San Francisco (SFO)

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Traveling from the historic cobblestone streets of Boston to the tech-driven, foggy hills of San Francisco represents a cross-country journey of approximately 2,700 miles, bridging the Atlantic and Pacific coasts. This popular transcontinental route connects two of America's most intellectual and innovative hubs, offering travelers a chance to experience the distinct cultural flavors of New England before touching down in the heart of Northern California's Bay Area. Whether you are flying for a high-stakes meeting in Silicon Valley or a leisurely tour of the Golden Gate Bridge, this long-haul flight is a staple for business and leisure travelers alike, often taking between six and seven hours to traverse the breadth of the continental United States.

Travel Tips

To maximize comfort on this roughly six-hour flight, consider booking a Red-Eye if you want to save on a night’s accommodation, though daylight flights offer stunning aerial views of the Rockies and the Great Salt Lake. Given the significant three-hour time difference between the East and West Coasts, it is advisable to stay hydrated and adjust your sleep schedule a day early to mitigate the effects of jet lag upon arrival. Additionally, since both Boston and San Francisco are known for unpredictable, micro-climate weather, dressing in layers is the most practical strategy for navigating terminal transitions and the varying temperatures found at both ends of your journey. Finally, consider downloading your airline's app ahead of time to track gate changes at Logan and terminal maps at 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.

Seasonal Pricing Patterns

Flight prices for the BOS to SFO route typically peak during the summer months of June through August and around major holidays like Thanksgiving and Christmas due to high vacation demand. Conversely, the most budget-friendly fares are usually found during the late winter months of January and February, excluding holiday weekends. Mid-week departures, specifically on Tuesdays and Wednesdays, often yield lower prices than weekend flights, as business travel demand tends to fluctuate during these times, allowing flexible travelers to secure significant savings by avoiding the Sunday afternoon rush.

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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