Cheap Flights from San Francisco, CA to Boston, MA from $168

On Cheapflightsplus.com you will find 9 direct and 41 connecting flights from San Francisco to Boston. You can compare airfare deals from 5 airlines and multiple travel sites from $168, 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 00:43 to 23:59 from 3 San Francisco airports and arrive 00:43 to 23:59 to 4 Boston airports. Average flight time is 5h 47m.

  • The fastest flight 5h 46m
  • Average flight time 5h 47m
  • The earliest flight 00:43
  • The latest flight 23:59
  • Distance 2698 ml

The cheapest months to travel to Boston are october (from 168 $), september (from 168 $), august (from 169 $).

The most expensive months are july (from 180 $), august (from 169 $), september (from 168 $).

What is the lowest airfare San Francisco to Boston?

The cheapest plane ticket found by our users is $168. This airfare is for economy class on one-way UA1665 flight by United Airlines for October 13, 2025 which leaves San Francisco in San Francisco at 23:30 am and arrives at Boston Logan at 08:17.

Economy class
$168
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Business class
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First class
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Flight Schedule San Francisco (California) to Boston (Massachusetts)

05:15 — 17:02
8h 47m flight time
Find flight
from$342
05:15 — 11:46 San Francisco — Chicago
UA1448 United Airlines
1h 44m stop
13:30 — 17:02 Chicago — Boston
UA1262 United Airlines
06:20 — 15:08
5h 48m flight time
Find flight
from$331
San Francisco — Boston
UA1152 United Airlines
07:11 — 16:00
5h 49m flight time
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from$326
San Francisco — Boston
HA6971 Hawaiian Airlines
07:11 — 16:00
5h 49m flight time
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from$331
San Francisco — Boston
AS249 Alaska Airlines
08:25 — 17:11
5h 46m flight time
Find flight
from$474
San Francisco — Boston
UA2647 United Airlines
10:35 — 23:59
10h 24m flight time
Find flight
from$337
San Francisco — Boston
UA2321 United Airlines
11:45 — 20:32
5h 47m flight time
Find flight
from$1042
San Francisco — Boston
UA2356 United Airlines
15:10 — 23:57
5h 47m flight time
Find flight
from$796
San Francisco — Boston
UA1372 United Airlines
18:34 — 06:41+1day
9h 7m flight time
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from$332
18:34 — 20:19 San Francisco — San Diego
HA7016 Hawaiian Airlines
1h 34m stop
21:53 — 06:41 San Diego — Boston
HA6497 Hawaiian Airlines
18:34 — 06:41+1day
9h 7m flight time
Find flight
from$341
18:34 — 20:19 San Francisco — San Diego
AS3376 Alaska Airlines
1h 34m stop
21:53 — 06:41 San Diego — Boston
AS259 Alaska Airlines
19:01 — 06:00+1day
7h 59m flight time
Find flight
from$332
19:01 — 20:50 San Francisco — Portland
HA6669 Hawaiian Airlines
43m stop
21:33 — 06:00 Portland — Boston
HA6331 Hawaiian Airlines
19:01 — 06:00+1day
7h 59m flight time
Find flight
from$341
19:01 — 20:50 San Francisco — Portland
AS524 Alaska Airlines
43m stop
21:33 — 06:00 Portland — Boston
AS436 Alaska Airlines
19:55 — 22:52+1day
23h 57m flight time
Find flight
from$325
19:55 — 21:26 San Francisco — Los Angeles
F92858 Frontier Airlines
8h 34m stop
06:00 — 13:26 Los Angeles — Detroit
NK2005 Spirit Airlines
7h 29m stop
20:55 — 22:52 Detroit — Boston
NK2152 Spirit Airlines
21:20 — 06:07+1day
5h 47m flight time
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from$331
San Francisco — Boston
UA796 United Airlines
23:30 — 08:17+1day
5h 47m flight time
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from$168
San Francisco — Boston
UA1665 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 October 26, 2025.

Popular Airlines on the Route

The flight San Francisco — Boston is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 7 departures per week at the price of from $ 331 . And the most expensive tickets are offered by United Airlines airline - from $ 1042.

Direct flights

There are 9 nonstop flights on the route. The fastest direct flight is UA2647 by United Airlines takes 5h 46m and the cheapest is UA1665 by United Airlines for $168.

  • AS - Alaska Airlines
    from $331
    Find
  • HA - Hawaiian Airlines
    from $326
    Find
  • UA - United Airlines
    from $168
    Find
See more direct flights

Connecting Flights

There are 41 flights with layovers on the route. The fastest connecting flight is UA1849 by United Airlines takes 7h 31m and the cheapest is UA1665 by United Airlines for $325.

  • AS - Alaska Airlines
    from $341
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  • F9 - Frontier Airlines
    from $325
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  • SY - Sun Country Airlines
    from $496
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  • HA - Hawaiian Airlines
    from $332
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  • UA - United Airlines
    from $342
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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 $168
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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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