Flights from Boston to San Francisco
Compare live flights from Boston to San Francisco (BOS–SFO) across multiple airlines, with nonstop options, durations and seasonal price trends below.
Boston to San Francisco flights overview
Covering around 4,341 km between BOS and SFO, the quickest nonstop flight takes about 5.4 hours. Both full-service and low-cost carriers serve this corridor; BookingTrolley compares their published fares so you can weigh price against flight time and baggage.
Ticket prices from Boston to San Francisco change frequently; BookingTrolley aggregates current fares across airlines so you can spot the lowest one. Based on this route's seasonal pattern, fares average roughly $ 527.00 over the year. Nov tends to be the cheapest month to fly (around $ 439.00), while Jun is usually the most expensive at about $ 654.00 — a swing of roughly 49%.
Frequently asked questions about flying from Boston to San Francisco
Tuesday and Wednesday are typically the cheapest days on Boston to San Francisco for United States travellers, with Friday and Sunday often higher. BookingTrolley compares mid-week and weekend fares on BOS–SFO.
Full-service and low-cost carriers compete from Boston (BOS) to San Francisco (SFO). BookingTrolley compares published fares so United States travellers can see which carrier is cheapest.
Economy round-trip flights on Boston to San Francisco vary by season. BookingTrolley tracks live fares on BOS–SFO so United States travellers can compare current prices.
The flying time from Boston to San Francisco is about 5.4 hours nonstop, covering roughly 4,341 km between BOS and SFO. BookingTrolley schedules show connecting itineraries take longer depending on layover length.
Shoulder months often pair good weather with lower airfare into San Francisco. BookingTrolley price trends on Boston to San Francisco show steeper rises around major United States holiday periods.
Use BookingTrolley's flexible-date comparison for Boston (BOS) to San Francisco (SFO) to see which days cost least. Avoiding Friday–Sunday peaks is one of the fastest ways for United States travellers to cut the ticket price.
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Explore fares from Boston, into San Francisco, and on related corridors with BookingTrolley.
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