How long does the flight from Boston to San Francisco take?

Flight time from Boston (BOS) to San Francisco (SFO) depends on routing, aircraft type, and whether the flight is direct or connecting. A direct flight typically reflects great-circle distance plus winds, while one-stop options can add several hours depending on the layover airport. Check the exact duration in the search results above, where we show block time per itinerary along with stop count.

Which airlines fly from Boston to San Francisco?

Airline availability for BOS to SFO changes by season and sometimes week to week as carriers adjust capacity. Our search above pulls live schedules and returns the airlines currently selling this route, both direct and connecting. Codeshare and interline itineraries are included, so you may see results operated by one carrier but sold by another.

Are there direct flights from Boston to San Francisco?

Direct (nonstop) availability on BOS to SFO varies by date, day of week, and season. Busy city pairs usually have multiple daily nonstops, while thinner routes may only have direct service a few days per week or only during peak seasons. Use our search above with flexible dates to see which days actually have nonstop options.

What is the cheapest month to fly from Boston to San Francisco?

Prices on BOS to SFO shift with seasonality, school holidays, and major events at both ends. Our 12-month price calendar below the search results shows the lowest fare found per departure date, which makes it easy to spot the cheapest weeks at a glance. Flexibility of a few days around your target date often unlocks significantly lower fares.

Boston to San Francisco flights

Direct and connecting flights from Boston (BOS) to San Francisco (SFO). Compare airlines, aircraft, and fares.

Distance: 4,341 km (2,697 mi)
Flight time: ~5h 26m
Airlines: 3
Aircraft types: 10

Airlines flying BOS → SFO

Airline	Aircraft types	Observations
United Airlines	6	6
JetBlue Airways	3	3
Delta Air Lines	1	1

Aircraft on this route

Airbus A321 — 1 operator
Airbus A321 — 1 operator
Boeing 737 — 1 operator
Boeing 737 — 1 operator
Boeing 737 — 1 operator

Airport details

Departure: General Edward Lawrence Logan International Airport (BOS)

City: Boston
Country: United States
IATA / ICAO: BOS / KBOS

Arrival: San Francisco International Airport (SFO)

City: San Francisco
Country: United States
IATA / ICAO: SFO / KSFO

Operating airlines

JetBlue Airways (B6)
Delta Air Lines (DL)
United Airlines (UA)

Distance: 4351 km. Duration: 403 minutes.

Other routes from Boston

Other routes to San Francisco

Frequently asked questions

How many airlines fly BOS to SFO?

3 airlines operate the BOS to SFO route in our 90-day observed dataset.

What aircraft fly the BOS-SFO route?

The most commonly observed aircraft on BOS to SFO include: Airbus A321, Airbus A321, Boeing 737.

How long is the Boston to San Francisco flight?

The estimated flight time from Boston (BOS) to San Francisco (SFO) is approximately 5h 26m, based on a cruise speed of 850 km/h.

What's the distance from Boston to San Francisco?

The great-circle distance from Boston (BOS) to San Francisco (SFO) is approximately 4,341 km (2,697 miles).

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