Cheap Flights from San Francisco, CA to Boston, MA from $171

On Cheapflightsplus.com you will find 1 direct and 16 connecting flights from San Francisco to Boston. You can compare airfare deals from 2 airlines and multiple travel sites from $171, book and save on cheap plane tickets and last minute offers. Also check out SFO-BOS flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from San Francisco to Boston depends on and how to choose the most interesting flight option for you.

Distance between San Francisco and Boston is 4341 miles. Time difference between the cities is 3h. Airplanes depart 16:35 to 23:59 from 3 San Francisco airports and arrive 16:35 to 23:59 to 4 Boston airports. Average flight time is 5h 41m.

  • The fastest flight 5h 41m
  • Average flight time 5h 41m
  • The earliest flight 16:35
  • The latest flight 23:59
  • Distance 2698 ml

The cheapest months to travel to Boston are october (from 171 $), december (from 171 $), september (from 171 $).

What is the lowest airfare San Francisco to Boston?

The cheapest plane ticket found by our users is $171. This airfare is for economy class on one-way UA1665 flight by United Airlines for December 30, 2025 which leaves San Francisco in San Francisco at 22:55 am and arrives at Boston Logan at 07:36.

Economy class
$171
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Business class
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First class
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Flight Schedule San Francisco (California) to Boston (Massachusetts)

17:50 — 07:26+1day
10h 36m flight time
Find flight
from$339
17:50 — 19:21 San Francisco — Los Angeles
UA2860 United Airlines
3h 34m stop
22:55 — 07:26 Los Angeles — Boston
UA2210 United Airlines
18:50 — 07:26+1day
9h 36m flight time
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from$339
18:50 — 20:21 San Francisco — Los Angeles
UA1800 United Airlines
2h 35m stop
23:20 — 07:59 Los Angeles — Boston
UA2210 United Airlines
21:35 — 09:14+1day
8h 39m flight time
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from$339
21:35 — 06:00 San Francisco — Newark
UA698 United Airlines
1h 55m stop
07:55 — 09:14 Newark — Boston
UA672 United Airlines
21:35 — 10:58+1day
10h 23m flight time
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from$339
21:35 — 06:00 San Francisco — Newark
UA698 United Airlines
3h 39m stop
09:39 — 10:58 Newark — Boston
UA1074 United Airlines
22:40 — 10:49+1day
9h 9m flight time
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from$339
22:40 — 05:00 San Francisco — Chicago
UA1184 United Airlines
2h 30m stop
07:30 — 10:49 Chicago — Boston
UA2067 United Airlines
22:45 — 10:38+1day
8h 53m flight time
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from$339
22:45 — 06:55 San Francisco — Washington D.C.
UA1870 United Airlines
2h 5m stop
09:00 — 10:38 Washington D.C. — Boston
UA641 United Airlines
22:50 — 10:58+1day
9h 8m flight time
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from$339
22:50 — 07:14 San Francisco — Newark
UA285 United Airlines
2h 25m stop
09:39 — 10:58 Newark — Boston
UA1074 United Airlines
22:55 — 07:36+1day
5h 41m flight time
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from$171
San Francisco — Boston
UA1665 United Airlines
22:59 — 16:54+1day
14h 55m flight time
Find flight
from$497
22:53 — 00:25 San Francisco — Los Angeles
UA2179 United Airlines
7h 55m stop
08:30 — 17:13 Los Angeles — Boston
UA1783 United Airlines
23:20 — 10:38+1day
8h 18m flight time
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from$339
23:20 — 07:30 San Francisco — Washington D.C.
UA1299 United Airlines
1h 30m stop
09:00 — 10:38 Washington D.C. — Boston
UA641 United Airlines
23:44 — 10:49+1day
8h 5m flight time
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from$339
23:00 — 05:25 San Francisco — Chicago
UA2097 United Airlines
1h 28m stop
07:30 — 11:02 Chicago — Boston
UA2067 United Airlines
23:44 — 12:43+1day
9h 59m flight time
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from$339
23:44 — 06:02 San Francisco — Chicago
UA2097 United Airlines
3h 17m stop
09:19 — 12:43 Chicago — Boston
UA1269 United Airlines
23:44 — 14:20+1day
11h 36m flight time
Find flight
from$702
23:44 — 06:02 San Francisco — Chicago
UA2097 United Airlines
4h 58m stop
11:00 — 14:20 Chicago — Boston
UA399 United Airlines
23:55 — 10:58+1day
8h 3m flight time
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from$339
23:55 — 08:25 San Francisco — Newark
UA2416 United Airlines
1h 14m stop
09:39 — 10:58 Newark — Boston
UA1074 United Airlines
23:59 — 12:21+1day
9h 22m flight time
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from$339
23:59 — 05:46 San Francisco — Houston
UA505 United Airlines
1h 48m stop
07:30 — 12:25 Houston — Boston
UA1977 United Airlines
Full flight schedule will help you in detecting at what time planes fly from San Francisco to Boston. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on December 25, 2025.

Popular Airlines on the Route

The flight San Francisco — Boston is served by 2 regular airlines . Most of the flights on this route are operated by TAP Portugal - 1 departures per week at the price of from $ 1731 . And the most expensive tickets are offered by TAP Portugal airline - from $ 1731.

Direct flights

There are 1 nonstop flights on the route. The fastest direct flight is UA1665 by United Airlines takes 5h 41m and the cheapest is UA1665 by United Airlines for $171.

  • UA - United Airlines
    from $171
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Connecting Flights

There are 16 flights with layovers on the route. The fastest connecting flight is UA2416 by United Airlines takes 8h 3m and the cheapest is UA1665 by United Airlines for $339.

  • UA - United Airlines
    from $339
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  • TP - TAP Portugal
    from $1731
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See more connecting flights

Airports

You can fly from San Francisco to Boston from 3 airports (San Francisco, Embarkadero, China Basin Heliport).

San Francisco airports

  • San Francisco-SFO
    from $171
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  • Embarkadero-EMB
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  • China Basin Heliport-JCC
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Boston airports

  • Boston City Heliport-JBC
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  • Boston RT128 Rail-ZRU
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  • Boston South Rail-ZTO
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  • Logan-BOS
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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