Cheap flights from San Francisco to Boston from $257
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
29 Nov — 6 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or February, booked 71 days in advance, depart on a Monday or Tuesday and return on a Monday
Cheap flight deals from San Francisco to Boston
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from San Francisco to Boston
Explore the most affordable flight options available from San Francisco to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.
Mon 23/1115:07 -
2 stops12h 13m
Wed 2/1209:00 -
2 stops13h 13m
Deal found 29/10$470
Sat 21/1119:29 -
1 stop30h 55m
Mon 23/1107:40 -
1 stop17h 25m
Deal found 29/10$473
Sat 14/1106:00 -
1 stop10h 41m
Fri 4/1208:00 -
Nonstop6h 52m
Deal found 30/10$475
Fri 4/1208:40 -
2 stops12h 19m
Sun 6/1218:13 -
1 stop17h 43m
Deal found 29/10$476
Sun 22/1123:15 -
1 stop8h 04m
Thu 26/1108:05 -
Nonstop6h 49m
Deal found 28/10$477
Thu 12/1108:20 -
1 stop18h 26m
Thu 19/1107:03 -
1 stop14h 03m
Deal found 29/10$479
Tue 8/1218:29 -
1 stop18h 24m
Thu 17/1207:40 -
1 stop12h 45m
Deal found 27/10$480
Wed 2/1217:59 -
1 stop15h 08m
Sat 5/1219:45 -
Nonstop6h 54m
Deal found 26/10$482
Thu 19/1110:05 -
1 stop16h 35m
Mon 23/1107:40 -
1 stop17h 25m
Deal found 26/10$484
Wed 18/1121:58 -
Nonstop5h 37m
Tue 5/117:40 -
Nonstop6h 52m
Deal found 28/10$486
Tue 17/1111:15 -
1 stop10h 12m
Tue 5/106:00 -
Nonstop6h 51m
Deal found 28/10$487
Best flights from San Francisco to Boston
Discover carefully curated flight deals from San Francisco to Boston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.
Tue 17/1111:15 -
1 stop10h 12m
Wed 6/106:00 -
Nonstop6h 51m
Deal found 29/10$479
Mon 14/1206:00 -
1 stop7h 20m
Mon 21/1212:35 -
1 stop11h 25m
Deal found 29/10$543
Thu 24/1213:20 -
2 stops15h 20m
Mon 4/117:47 -
1 stop18h 05m
Deal found 29/10$544
Fri 27/1105:40 -
1 stop7h 30m
Fri 4/1215:30 -
2 stops11h 25m
Deal found 29/10$550
Mon 14/1222:00 -
1 stop9h 46m
Mon 21/1206:00 -
Nonstop6h 42m
Deal found 29/10$555
Sun 20/1221:36 -
1 stop28h 52m
Wed 30/1206:00 -
1 stop9h 51m
Deal found 26/10$577
Thu 24/1209:25 -
2 stops11h 20m
Sun 10/105:30 -
1 stop8h 45m
Deal found 28/10$557
Sun 20/1208:20 -
1 stop18h 08m
Mon 4/109:00 -
2 stops16h 57m
Deal found 25/10$614
Sat 26/1221:36 -
1 stop28h 52m
Wed 30/1206:00 -
1 stop9h 51m
Deal found 26/10$627
Direct flights from San Francisco to Boston
Explore direct flight options from San Francisco to Boston based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.
Wed 18/1121:58 -
Nonstop5h 37m
Tue 5/117:40 -
Nonstop6h 52m
Deal found 28/10$486
Thu 19/1107:00 -
Nonstop5h 30m
Thu 7/117:40 -
Nonstop6h 52m
Deal found 29/10$492
Tue 17/1107:00 -
Nonstop5h 30m
Thu 7/117:40 -
Nonstop6h 52m
Deal found 30/10$493
Mon 18/123:40 -
Nonstop5h 36m
Tue 26/118:30 -
Nonstop6h 54m
Deal found 30/10$494
Tue 1/1221:57 -
Nonstop5h 37m
Fri 4/1216:50 -
Nonstop6h 48m
Deal found 29/10$507
Tue 29/1214:45 -
Nonstop5h 38m
Wed 6/113:48 -
Nonstop6h 58m
Deal found 29/10$509
Tue 1/1223:20 -
Nonstop5h 37m
Fri 4/1209:45 -
Nonstop6h 53m
Deal found 29/10$511
Sun 15/1114:50 -
Nonstop6h 08m
Wed 6/106:00 -
Nonstop6h 51m
Deal found 25/10$514
Thu 19/1112:55 -
Nonstop5h 28m
Tue 5/117:40 -
Nonstop6h 52m
Deal found 28/10$520
Wed 11/1107:30 -
Nonstop5h 35m
Tue 5/106:00 -
Nonstop6h 51m
Deal found 27/10$521
Sat 26/1222:13 -
Nonstop5h 36m
Wed 6/107:30 -
Nonstop6h 56m
Deal found 29/10$536
Sun 22/1121:58 -
Nonstop5h 37m
Fri 11/1207:55 -
Nonstop6h 54m
Deal found 27/10$550
Last-minute flights from San Francisco to Boston
Discover last-minute flight deals from San Francisco to Boston. Data last updated 30 October 2026 and is based on user searches.
Sun 8/1110:44 -
Nonstop5h 41m
Wed 9/1212:20 -
1 stop13h 04m
Deal found 25/10$536
Sun 8/1106:08 -
1 stop14h 50m
Wed 11/1109:03 -
1 stop11h 58m
Deal found 25/10$564
Mon 9/1117:00 -
1 stop20h 41m
Tue 17/1107:03 -
1 stop17h 49m
Deal found 26/10$479
Mon 9/1117:00 -
1 stop9h 46m
Sun 15/1107:03 -
1 stop28h 49m
Deal found 25/10$521
Mon 9/1114:44 -
1 stop12h 02m
Sat 14/1107:03 -
1 stop17h 54m
Deal found 26/10$527
Mon 9/1114:44 -
1 stop12h 02m
Mon 16/1107:03 -
1 stop14h 03m
Deal found 26/10$533
Mon 9/1111:15 -
1 stop10h 12m
Wed 6/106:00 -
Nonstop6h 51m
Deal found 26/10$537
Mon 9/1110:05 -
1 stop16h 41m
Fri 13/1107:13 -
1 stop11h 48m
Deal found 26/10$546
Mon 9/1107:30 -
Nonstop5h 35m
Tue 17/1107:09 -
1 stop9h 31m
Deal found 26/10$548
Mon 9/1117:00 -
1 stop9h 46m
Wed 11/1107:13 -
1 stop9h 57m
Deal found 26/10$574
Mon 9/1117:42 -
1 stop8h 58m
Fri 4/1207:00 -
1 stop11h 47m
Deal found 29/10$585
One-way flights from San Francisco to Boston
Search for one-way flight options from San Francisco to Boston. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.
Tue 22/1216:12 -
1 stop10h 16m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10$257
Mon 4/116:12 -
1 stop10h 16m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10$259
Wed 18/1113:00 -
Nonstop5h 29m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10$261
Thu 17/1206:00 -
1 stop20h 28m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10$264
Sat 21/1119:29 -
1 stop30h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10$266
Wed 25/1116:50 -
1 stop10h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10$267
Mon 9/1114:50 -
Nonstop6h 08m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10$269
Sat 14/1110:29 -
1 stop16h 17m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10$271
Tue 8/1219:04 -
2 stops19h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10$273
Tue 17/1107:00 -
2 stops11h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10$274
Wed 13/119:05 -
2 stops10h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10$276
Sat 5/1207:09 -
2 stops13h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10$278
Find flight deals from San Francisco to Boston
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 October 2026.
Customise your flight search to find flights from San Francisco to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 30 October 2026.
Use the filters below to find and compare flights from San Francisco to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Fri 18/12
21:36-05:28
1 stop28h 52m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$286
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Tue 10/11
12:45-23:59
1 stop8h 14m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$304
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Thu 24/12
14:45-23:23
Nonstop5h 38m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$304
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Tue 5/1
12:45-21:29
Nonstop5h 44m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$318
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Wed 30/12
22:50-10:20
1 stop8h 30m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$318
Fastest return journey
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Thu 12/11
21:58-06:35
Nonstop5h 37m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$325
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Fri 13/11
12:45-21:24
Nonstop5h 39m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$325
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Thu 17/12
10:10-23:10
2 stops10h 00m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$344
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Sun 17/1
19:05-08:05
2 stops10h 00m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$347
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Sun 20/12
22:45-11:55
2 stops10h 10m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$347
Flights are sorted by cheapest return flights first.
Deals found on 28/10
Showing 1-10 of 20 resultsSorted by cheapest first
1
2
Best time to book a flight from San Francisco to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from San Francisco with our price prediction graph.
SFO-BOS
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Boston
Prices
Delays
How far ahead should I book a flight from San Francisco to Boston?
The best time to book flights from San Francisco to Boston is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from San Francisco to Boston?
Currently, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of $477). Flying from San Francisco to Boston in June is currently the most expensive (average of $715). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to BOS?
Find hourly flight availability from San Francisco to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2026.
When flying from San Francisco to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost for a return flight from San Francisco to Boston?
Airfare is below average for this route at the moment.
San Francisco to Boston flights typically cost between $489 and $872 in November.The cheapest return price found within the last 5 days was $470 on Alaska Airlines (23 Nov–2 Dec).
How often are flights from San Francisco to Boston delayed?
About 20% of weekly flights between San Francisco and Boston have experienced delays in the past year, with the average delay time being 177 minutes.
What is the most punctual flight time for San Francisco to Boston flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Francisco to Boston flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 18% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How popular is this San Francisco to Boston flight route?
The San Francisco to Boston Logan Intl flight path was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from San Francisco to Boston?
Airlines like JetBlue, Southwest, and Alaska Airlines fly from San Francisco to Boston in about 7h 20m. The time it takes to get you to your destination can typically vary by up to 8h. Airlines will cover a distance of 4339 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most reliable airlines from San Francisco to Boston?
No one likes to see their flight delayed. When booking a flight from San Francisco to Boston consider choosing Etihad Airways(89%), Japan Airlines(87%) or Scandinavian Airlines(85%), as they are the most reliable in getting you off to your destination on time.
Can I find deals for flights from San Francisco to Boston that include hotel bookings?
Yes. In addition to deals on San Francisco to Boston flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to Boston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Boston.
Can I find deals for business class flights from San Francisco to Boston?
Yes. Cheapflights offers flight deals from San Francisco to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Francisco to Boston?
Currently, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of $477). Flying from San Francisco to Boston in June is currently the most expensive (average of $715). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from San Francisco to Boston?
When you search for this flight from San Francisco to Boston, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from San Francisco to Boston?
Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco to Boston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from San Francisco to Boston with no change fees?
Certainly. Search results for flights to Boston from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from San Francisco to Boston become cheaper?
Yes, Cheapflights offers price alerts on San Francisco to Boston flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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