Cheap flights from San Francisco to Boston from $237
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
18 Oct — 25 Oct1
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.
Cheapest
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 18 September 2026.
Wed 9/1223:32 -
1 stop8h 14m
Mon 14/1215:45 -
Nonstop6h 47m
Deal found 14/9$453
Thu 5/1114:50 -
Nonstop6h 08m
Tue 10/1116:10 -
1 stop10h 44m
Deal found 14/9$456
Mon 26/1019:25 -
2 stops10h 25m
Thu 29/1013:05 -
2 stops12h 00m
Deal found 16/9$458
Sat 17/1017:45 -
1 stop10h 41m
Wed 4/1107:13 -
1 stop9h 57m
Deal found 16/9$459
Sat 17/1009:20 -
1 stop11h 00m
Sat 24/1005:35 -
1 stop9h 45m
Deal found 14/9$460
Mon 19/1014:37 -
Nonstop6h 21m
Wed 28/1013:00 -
1 stop11h 41m
Deal found 16/9$462
Mon 16/1117:42 -
1 stop8h 58m
Tue 17/1109:03 -
1 stop9h 58m
Deal found 17/9$465
Sat 17/1014:04 -
2 stops14h 22m
Wed 21/1018:40 -
1 stop17h 09m
Deal found 17/9$466
Sat 17/1023:40 -
1 stop8h 30m
Tue 27/1015:50 -
2 stops10h 50m
Deal found 14/9$469
Thu 29/1014:15 -
1 stop8h 00m
Thu 5/1105:20 -
2 stops10h 45m
Deal found 14/9$470
Sat 24/1022:10 -
Nonstop5h 50m
Thu 29/1016:10 -
1 stop10h 48m
Deal found 14/9$472
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 18 September 2026.
Sun 6/1223:32 -
1 stop8h 14m
Thu 10/1211:45 -
Nonstop6h 48m
Deal found 18/9$468
Mon 26/1016:43 -
1 stop9h 45m
Wed 28/1007:51 -
1 stop10h 00m
Deal found 14/9$473
Sun 25/1015:00 -
Nonstop5h 39m
Tue 27/1007:45 -
Nonstop6h 40m
Deal found 13/9$494
Mon 12/1022:42 -
1 stop7h 51m
Fri 16/1009:20 -
Nonstop6h 23m
Deal found 15/9$529
Tue 10/1112:14 -
Nonstop5h 46m
Fri 13/1113:05 -
1 stop11h 32m
Deal found 17/9$494
Wed 18/1106:00 -
1 stop10h 33m
Sat 21/1115:00 -
1 stop10h 45m
Deal found 15/9$514
Sun 18/1021:54 -
Nonstop5h 46m
Fri 23/1020:38 -
1 stop15h 21m
Deal found 18/9$611
Sun 11/1014:37 -
Nonstop6h 21m
Tue 20/1007:00 -
Nonstop6h 29m
Deal found 16/9$529
Sat 10/1016:43 -
1 stop9h 38m
Sat 17/1007:51 -
2 stops13h 19m
Deal found 17/9$660
Wed 11/1107:00 -
Nonstop5h 30m
Thu 19/1111:00 -
1 stop8h 14m
Deal found 17/9$677
Thu 1/1011:58 -
1 stop8h 53m
Thu 22/1020:51 -
Nonstop6h 33m
Deal found 16/9$691
Sun 4/1021:43 -
Nonstop5h 47m
Sun 11/1009:10 -
1 stop8h 54m
Deal found 15/9$692
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 18 September 2026.
Mon 26/1021:54 -
Nonstop5h 46m
Fri 30/1010:05 -
Nonstop6h 38m
Deal found 14/9$473
Sat 10/1013:59 -
Nonstop6h 22m
Tue 20/1021:35 -
Nonstop6h 30m
Deal found 15/9$484
Sat 17/1012:10 -
Nonstop5h 47m
Sat 24/1011:30 -
Nonstop6h 23m
Deal found 16/9$487
Tue 13/1014:37 -
Nonstop6h 21m
Sat 17/1007:00 -
Nonstop6h 29m
Deal found 15/9$491
Mon 12/1021:54 -
Nonstop5h 46m
Fri 6/1117:45 -
Nonstop6h 38m
Deal found 13/9$494
Wed 4/1122:10 -
Nonstop5h 34m
Mon 9/1115:50 -
Nonstop6h 45m
Deal found 14/9$496
Sat 10/1015:00 -
Nonstop5h 39m
Thu 15/1020:51 -
Nonstop6h 33m
Deal found 15/9$498
Tue 1/1221:57 -
Nonstop5h 38m
Mon 14/1216:50 -
Nonstop6h 49m
Deal found 17/9$501
Thu 29/1023:20 -
Nonstop5h 36m
Mon 2/1107:10 -
Nonstop6h 49m
Deal found 13/9$503
Tue 13/1014:37 -
Nonstop6h 21m
Fri 16/1021:25 -
Nonstop6h 30m
Deal found 15/9$505
Sun 11/1007:00 -
Nonstop5h 45m
Fri 16/1020:51 -
Nonstop6h 33m
Deal found 15/9$512
Sat 10/1015:00 -
Nonstop5h 39m
Sat 17/1007:45 -
Nonstop6h 40m
Deal found 16/9$515
Last-minute flights from San Francisco to Boston
Discover last-minute flight deals from San Francisco to Boston. Data last updated 18 September 2026 and is based on user searches.
Sat 10/1020:44 -
1 stop8h 15m
Wed 28/1016:10 -
1 stop10h 48m
Deal found 16/9$453
Tue 13/1006:00 -
1 stop11h 49m
Sat 24/1017:00 -
Nonstop6h 35m
Deal found 14/9$468
Sat 17/1017:45 -
1 stop10h 41m
Wed 4/1107:13 -
1 stop9h 57m
Deal found 16/9$459
Sat 17/1009:20 -
1 stop11h 00m
Sat 24/1005:35 -
1 stop9h 45m
Deal found 14/9$460
Sat 17/1014:04 -
2 stops14h 22m
Wed 21/1018:40 -
1 stop17h 09m
Deal found 17/9$466
Sat 17/1023:40 -
1 stop8h 30m
Tue 27/1015:50 -
2 stops10h 50m
Deal found 14/9$469
Mon 19/1014:37 -
Nonstop6h 21m
Wed 28/1013:00 -
1 stop11h 41m
Deal found 14/9$456
Sat 24/1022:10 -
Nonstop5h 50m
Thu 29/1016:10 -
1 stop10h 48m
Deal found 14/9$472
Mon 26/1019:25 -
2 stops10h 25m
Thu 29/1013:05 -
2 stops12h 00m
Deal found 16/9$458
Mon 26/1016:43 -
1 stop9h 45m
Tue 27/1009:03 -
1 stop10h 05m
Deal found 16/9$465
Thu 29/1014:15 -
1 stop8h 00m
Thu 5/1105:20 -
2 stops10h 45m
Deal found 14/9$470
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 18 September 2026.
Fri 30/1012:40 -
Nonstop5h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 13/9$237
Sat 10/1013:59 -
Nonstop6h 22m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 13/9$243
Sat 10/1015:00 -
Nonstop5h 39m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9$244
Tue 13/1014:37 -
Nonstop6h 21m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9$246
Mon 19/1019:25 -
2 stops13h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 17/9$247
Fri 6/1113:45 -
1 stop8h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 16/9$248
Fri 23/1007:03 -
1 stop19h 18m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 16/9$251
Fri 23/1022:50 -
1 stop14h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9$256
Sat 10/1014:05 -
Nonstop5h 52m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 17/9$258
Fri 26/221:25 -
1 stop8h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 17/9$260
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 18 September 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 18 September 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
Sat 24/10
23:20-08:16
Nonstop5h 56m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$244
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Tue 13/10
14:37-23:58
Nonstop6h 21m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$258
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Sun 11/10
07:00-15:45
Nonstop5h 45m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$258
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Wed 21/10
23:20-08:16
Nonstop5h 56m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$258
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Wed 21/10
17:50-08:10
2 stops11h 20m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$293
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Fri 2/10
15:00-23:46
Nonstop5h 46m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$300
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Thu 1/10
12:10-20:57
Nonstop5h 47m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$329
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Sun 11/10
23:20-08:16
Nonstop5h 56m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$336
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Thu 5/11
17:00-05:46
1 stop9h 46m
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
Sat 14/11
07:15-00:46
2 stops14h 31m
Boston Logan Intl
Wed 31/12
00:00-21:00
Nonstop0h 00m
$357
Flights are sorted by cheapest return flights first.
Deals found on 16/9
Showing 1-10 of 24 resultsSorted by cheapest first
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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
Airlines
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 63 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 $470). Flying from San Francisco to Boston in June is currently the most expensive (average of $703). 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 18 September 2026.
It’s optimal to fly from San Francisco to Boston in the evening. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the afternoon.
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 $497 and $783 in December.The cheapest return price found within the last 5 days was $453 on JetBlue (9 Dec–14 Dec).
Weekly flight availability from San Francisco to Boston
Explore weekly flight availability from San Francisco to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 September 2026.
The most flights from SFO to BOS are scheduled on a Thursday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).
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 175 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, Alaska Airlines, and Delta fly from San Francisco to Boston in about 5h 45m. The time it takes to get you to your destination can typically vary by up to 4h. 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 ITA Airways(100%), Scandinavian Airlines(85%) or EL AL(84%), as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from San Francisco to Boston?
The cheapest flight price from San Francisco to Boston is $320. On average you can expect to pay $326. The most popular route, (San Francisco - Boston Logan Intl), can usually be booked for $417.
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 $470). Flying from San Francisco to Boston in June is currently the most expensive (average of $703). 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 18 September 2026.
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 18 September 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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