Cheap flights from Boston to San Francisco

Logan
BOS
San Francisco
SFO

Flight deals from Boston to San Francisco

Below you can see the best deals on flights Boston — San Francisco for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 22 September, from $94.

Top 10 cheap flights from Boston to San Francisco

F9
F9
$ 118

Boston — San Francisco

12:45—19:03
29 Aug 2026
9 h 18 m
1 stop
F9
F9
$ 120

Boston — San Francisco

12:45—19:03
5 Sep 2026
9 h 18 m
1 stop
F9
F9
$ 120

Boston — San Francisco

12:45—19:03
1 Sep 2026
9 h 18 m
1 stop
DL
DL
$ 121

Boston — San Jose

06:20—14:14
12 Sep 2026
10 h 54 m
1 stop
DL
DL
$ 121

Boston — San Jose

11:29—20:13
31 Aug 2026
11 h 44 m
1 stop
DL
DL
$ 121

Boston — San Jose

16:30—22:13
5 Sep 2026
8 h 43 m
1 stop
DL
DL
$ 121

Boston — San Jose

07:10—12:27
2 Sep 2026
8 h 17 m
1 stop
DL
DL
$ 121

Boston — San Jose

16:30—22:13
2 Sep 2026
8 h 43 m
1 stop
DL
DL
$ 121

Boston — San Jose

10:50—17:12
2 Sep 2026
9 h 22 m
1 stop
DL
DL
$ 121

Boston — San Jose

07:45—17:02
2 Sep 2026
12 h 17 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Boston — San Francisco flight

Looking for cheap flights from Boston to San Francisco? Compare fares from different airlines, check the flight schedule and travel time — and book your Boston — San Francisco ticket online at the best price.

The route has direct flights — around 245 flights per week, flights are operated by JetBlue, United Airlines, Delta, Hawaiian Airlines and 2 more airlines, a nonstop flight takes about 6 h 27 min, the distance between the cities is around 4,345 km.

Planning your trip? You may find our San Francisco travel guide, how to get from the airport into town and San Francisco weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $94Min. price
SeptemberCheapest
MayPeak season
YesDirect flights
4,345 kmDistance
6 h 27 minTravel time
6Airlines
245 / wkFlights

Flight schedule from Boston to San Francisco

The table shows direct flights from Boston to San Francisco on the selected date. The flight takes approximately 6 h 27 min. Regular flights are operated by JetBlue, United Airlines, Delta and Hawaiian Airlines. Departures from Logan International Airport airports, arrivals at San Francisco International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 14 Aug 2026

Flight ticket prices by day: Boston — San Francisco

Below is a calendar of the lowest flight ticket prices for Boston — San Francisco by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $94 in September, and the most expensive are around $146 in May. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Boston to San Francisco by month. Tickets are usually cheapest in February (around $278) and priciest in July (about $389) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$289mediumMay$322mediumSep$300low
Feb$278lowJun$378highOct$289low
Mar$289lowJul$389highNov$345high
Apr$334highAug$356mediumDec$378high

Some values are estimated based on seasonality.

When to fly

Weather in San Francisco: it is warmest in September (up to 24 °C on average) and coolest in January (around 14 °C). The driest month is June.

Tickets are usually cheapest in September and most expensive in May. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · San Francisco

Dry and wet days · San Francisco

Wind speed and direction · San Francisco

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How to get the best deal on a Boston — San Francisco ticket

  • Book ahead: fares for Boston — San Francisco are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to San Francisco is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Boston — San Francisco route are operated by 6 airlines; JetBlue runs the most flights (around 39% of all flights). Compare carriers, flight shares and schedules below.

  • JetBlueB6
    32x/week
    WebsiteFleet: 30742.5M pax/year
    • Direct flight BOS → SFO32x/week
      Duration
      6h 35m
      Days
      MTWTFSS
    38.8%Open →
  • United AirlinesUA
    26x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight BOS → SFO26x/week
      Duration
      6h 22m
      Days
      MTWTFSS
    31.8%Open →
  • DeltaDL
    12x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight BOS → SFO12x/week
      Duration
      6h 38m
      Days
      MTWTFSS
    14.3%Open →
  • Hawaiian AirlinesHA
    7x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight BOS → SFO7x/week
    8.6%
  • Alaska AirlinesAS
    5x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight BOS → SFO5x/week
    5.7%Open →
  • American AirlinesAA
    1x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight BOS → SFO1x/week
    0.8%Open →

Cities and airports on the Boston — San Francisco route

Flights Boston — San Francisco depart from Logan International Airport and arrive at San Francisco International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Boston

BOS
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

San Francisco

SFO
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Boston — San Francisco flight

How long is the flight from Boston to San Francisco?

A nonstop Boston — San Francisco flight takes about 6 h 27 min — the distance between the cities is around 4,345 km.

How far is it from Boston to San Francisco?

The distance from Boston to San Francisco is about 4,345 km, which a nonstop flight covers in around 6 h 27 min.

Are there direct flights from Boston to San Francisco?

Yes, there are nonstop flights Boston — San Francisco — around 245 flights per week.

Which airlines fly from Boston to San Francisco?

Airlines operating Boston — San Francisco include JetBlue, United Airlines, Delta, Hawaiian Airlines, Alaska Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Boston — San Francisco flights use?

Flights from Boston depart from Logan International Airport, and arrive at San Francisco International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Boston to San Francisco?

The price of a Boston — San Francisco ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in May. Tickets typically cost between $94 and $146. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Boston — San Francisco?

Flights Boston — San Francisco are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Boston to San Francisco?

To catch a low fare Boston — San Francisco, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Boston

See all
New York CityWashington, D.C.ChicagoTorontoAtlantaSeattleLos AngelesPhiladelphiaNantucketLondonDallasOrlandoDenverFort LauderdaleDetroitCharlotteRaleighMontrealNashvilleMarthas VineyardMiamiMinneapolisBuffaloSan DiegoPhoenixMadridTampaPittsburghClevelandBarcelonaIndianapolisSan JuanDublinHoustonParisLas VegasAustinRichmondCincinnatiAmsterdam

Where else you can fly from San Francisco

See all
Los AngelesNew York CitySeattleSan DiegoSanta AnaLas VegasBurbankVancouverPhoenixPortlandLondonDenverPalm SpringsHonoluluDallasChicagoSalt Lake CityAustinAtlantaWashington, D.C.HoustonKahuluiTaipeiMinneapolisTorontoDetroitOrlandoSpokaneTokyoParisBoiseKapaaSan Jose del CaboPuerto VallartaRedmondSeoulFrankfurt am MainCalgaryMexico CityKailua-Kona

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