Cheap flights from San Francisco to Boston from £117
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
30 Sep — 7 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 89 days in advance, depart on a Monday or Wednesday and return on a Thursday
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 31 August 2026.
Wed 21/1011:40 -
1 stop14h 41m
Wed 28/1007:51 -
1 stop10h 00m
Deal found 28/8£234
Fri 23/1022:14 -
1 stop9h 33m
Tue 27/1007:51 -
1 stop10h 00m
Deal found 27/8£238
Tue 20/1015:31 -
1 stop10h 50m
Tue 27/1017:05 -
Nonstop6h 50m
Deal found 29/8£241
Sat 10/1015:31 -
1 stop10h 50m
Tue 10/1109:03 -
1 stop10h 41m
Deal found 31/8£241
Sat 12/922:05 -
1 stop11h 04m
Sat 19/912:54 -
1 stop9h 54m
Deal found 27/8£243
Wed 28/1015:31 -
1 stop10h 57m
Wed 6/118:14 -
1 stop17h 38m
Deal found 27/8£244
Thu 22/1009:43 -
1 stop11h 16m
Tue 27/1007:51 -
1 stop10h 00m
Deal found 28/8£246
Sat 26/915:00 -
Nonstop5h 46m
Sat 3/1010:10 -
Nonstop6h 32m
Deal found 31/8£248
Sat 3/1022:10 -
Nonstop5h 50m
Tue 3/1109:30 -
Nonstop6h 46m
Deal found 31/8£249
Sat 19/922:10 -
Nonstop5h 50m
Sat 26/921:30 -
Nonstop6h 26m
Deal found 28/8£250
Sat 10/1007:03 -
1 stop19h 18m
Wed 14/1007:51 -
1 stop15h 42m
Deal found 27/8£251
Wed 28/1015:31 -
1 stop10h 57m
Fri 8/118:14 -
1 stop17h 38m
Deal found 27/8£253
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 31 August 2026.
Tue 20/1012:40 -
Nonstop5h 40m
Tue 27/1017:45 -
Nonstop6h 38m
Deal found 29/8£249
Wed 28/1007:30 -
Nonstop5h 35m
Wed 28/1020:40 -
Nonstop6h 45m
Deal found 31/8£249
Tue 22/922:58 -
Nonstop5h 56m
Sun 27/906:00 -
Nonstop6h 30m
Deal found 26/8£264
Tue 20/1021:35 -
1 stop8h 15m
Tue 27/1015:50 -
2 stops10h 50m
Deal found 29/8£267
Tue 22/918:58 -
1 stop8h 11m
Wed 23/909:33 -
1 stop10h 04m
Deal found 29/8£289
Sat 19/912:20 -
Nonstop5h 48m
Sat 26/910:10 -
Nonstop6h 32m
Deal found 28/8£264
Fri 2/1021:15 -
Nonstop5h 56m
Sun 4/1006:00 -
Nonstop6h 30m
Deal found 31/8£278
Thu 22/1014:15 -
1 stop8h 00m
Tue 27/1006:45 -
2 stops11h 25m
Deal found 28/8£282
Sat 26/922:10 -
Nonstop5h 50m
Sat 3/1018:05 -
1 stop17h 58m
Deal found 31/8£296
Sun 4/1015:00 -
Nonstop5h 46m
Fri 9/1020:51 -
Nonstop6h 33m
Deal found 30/8£278
Fri 23/1009:35 -
1 stop10h 40m
Tue 27/1006:45 -
2 stops11h 25m
Deal found 27/8£286
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 31 August 2026.
Sat 26/915:00 -
Nonstop5h 46m
Sat 3/1010:10 -
Nonstop6h 32m
Deal found 31/8£248
Sat 19/922:10 -
Nonstop5h 50m
Wed 23/918:09 -
Nonstop6h 31m
Deal found 27/8£249
Sat 19/922:10 -
Nonstop5h 50m
Sat 26/921:30 -
Nonstop6h 26m
Deal found 28/8£250
Wed 30/914:05 -
Nonstop5h 52m
Wed 7/1007:45 -
Nonstop6h 30m
Deal found 29/8£254
Sat 14/1122:10 -
Nonstop5h 31m
Sun 15/1109:30 -
Nonstop6h 50m
Deal found 28/8£260
Fri 23/1014:37 -
Nonstop6h 21m
Tue 27/1020:40 -
Nonstop6h 45m
Deal found 27/8£263
Fri 2/1014:39 -
Nonstop6h 20m
Sat 31/1017:05 -
Nonstop6h 50m
Deal found 31/8£264
Wed 18/1123:20 -
Nonstop5h 36m
Sun 22/1108:05 -
Nonstop6h 49m
Deal found 27/8£264
Sat 26/923:20 -
Nonstop5h 56m
Sat 10/1007:45 -
Nonstop6h 30m
Deal found 28/8£271
Wed 30/907:10 -
Nonstop5h 47m
Mon 19/1020:51 -
Nonstop6h 33m
Deal found 28/8£272
Fri 2/1014:39 -
Nonstop6h 20m
Fri 30/1015:50 -
Nonstop6h 45m
Deal found 31/8£278
Thu 19/1115:25 -
Nonstop5h 34m
Sat 5/1211:45 -
Nonstop6h 46m
Deal found 31/8£279
Last-minute flights from San Francisco to Boston
Discover last-minute flight deals from San Francisco to Boston. Data last updated 31 August 2026 and is based on user searches.
Sat 12/922:05 -
1 stop11h 04m
Sat 19/912:54 -
1 stop9h 54m
Deal found 27/8£243
Sat 19/922:10 -
Nonstop5h 50m
Wed 23/918:09 -
Nonstop6h 31m
Deal found 27/8£249
Sat 19/922:10 -
Nonstop5h 50m
Sat 26/921:30 -
Nonstop6h 26m
Deal found 28/8£250
Sat 19/919:22 -
1 stop9h 17m
Tue 22/907:12 -
1 stop10h 15m
Deal found 27/8£271
Mon 21/917:16 -
1 stop9h 31m
Tue 22/907:12 -
1 stop11h 44m
Deal found 27/8£254
Mon 21/907:50 -
Nonstop5h 44m
Wed 23/906:50 -
Nonstop6h 23m
Deal found 27/8£264
Tue 22/911:15 -
1 stop10h 15m
Tue 29/915:20 -
2 stops11h 00m
Deal found 30/8£267
Wed 23/911:15 -
1 stop10h 15m
Thu 1/1018:35 -
1 stop8h 30m
Deal found 27/8£272
Sat 26/915:00 -
Nonstop5h 46m
Sat 3/1010:10 -
Nonstop6h 32m
Deal found 31/8£248
Sat 26/921:13 -
1 stop29h 34m
Sat 3/1007:51 -
1 stop11h 25m
Deal found 27/8£258
Tue 29/918:58 -
1 stop8h 11m
Wed 30/907:12 -
1 stop11h 44m
Deal found 27/8£259
Wed 30/922:35 -
1 stop7h 58m
Wed 7/1007:45 -
Nonstop6h 30m
Deal found 28/8£256
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 31 August 2026.
Sat 3/1015:31 -
1 stop10h 50m
Deal found 28/8£117
Sat 10/1007:03 -
1 stop19h 18m
Deal found 29/8£121
Wed 30/923:20 -
Nonstop5h 56m
Deal found 27/8£125
Sat 10/1022:10 -
Nonstop5h 50m
Deal found 29/8£126
Tue 22/912:20 -
Nonstop5h 48m
Deal found 31/8£132
Thu 31/1218:55 -
1 stop8h 25m
Deal found 28/8£133
Sun 27/907:08 -
1 stop19h 39m
Deal found 31/8£136
Mon 4/121:26 -
1 stop16h 59m
Deal found 28/8£137
Tue 6/1012:40 -
Nonstop5h 40m
Deal found 28/8£137
Sun 27/921:15 -
Nonstop5h 56m
Deal found 28/8£140
Sat 27/223:20 -
Nonstop6h 03m
Deal found 27/8£140
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 31 August 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 31 August 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
Fastest return journey
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Tue 20/10
12:40-21:20
Nonstop5h 40m
Boston Logan Intl
Tue 27/10
17:45-21:23
Nonstop6h 38m
£249
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Wed 28/10
07:30-16:05
Nonstop5h 35m
Boston Logan Intl
Wed 28/10
20:40-00:25
Nonstop6h 45m
£249
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Tue 22/9
22:58-07:54
Nonstop5h 56m
Boston Logan Intl
Sun 27/9
06:00-09:30
Nonstop6h 30m
£264
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Sat 19/9
12:20-21:08
Nonstop5h 48m
Boston Logan Intl
Sat 26/9
10:10-13:42
Nonstop6h 32m
£264
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Tue 20/10
21:35-08:50
1 stop8h 15m
Boston Logan Intl
Tue 27/10
15:50-23:40
2 stops10h 50m
£267
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Fri 2/10
21:15-06:11
Nonstop5h 56m
Boston Logan Intl
Sun 4/10
06:00-09:30
Nonstop6h 30m
£278
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Sun 4/10
15:00-23:46
Nonstop5h 46m
Boston Logan Intl
Fri 9/10
20:51-00:24
Nonstop6h 33m
£278
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Thu 22/10
14:15-01:15
1 stop8h 00m
Boston Logan Intl
Tue 27/10
06:45-15:10
2 stops11h 25m
£282
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Fri 23/10
09:35-23:15
1 stop10h 40m
Boston Logan Intl
Tue 27/10
06:45-15:10
2 stops11h 25m
£286
San FranciscoBoston
SFO San Francisco - BOS Boston Logan Intl
SFOBOS
San Francisco
Tue 22/9
18:58-06:09
1 stop8h 11m
Boston Logan Intl
Wed 23/9
09:33-16:37
1 stop10h 04m
£289
Flights are sorted by cheapest return flights first.
Deals found on 28/8
Showing 1-10 of 22 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?
Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 £247). Flying from San Francisco to Boston in June is currently the most expensive (average of £370). 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 31 August 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 62% on flights from San Francisco to Boston by exploring options for tickets at midday.
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 £247 and £390 in October.The cheapest return price found within the last 5 days was £234 on Alaska Airlines (21 Oct–28 Oct).
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 31 August 2026.
The most flights from SFO to BOS are scheduled on a Sunday (48 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (24 on average).
How often are flights from San Francisco to Boston delayed?
About 19% of weekly flights between San Francisco and Boston have experienced delays in the past year, with the average delay time being 176 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.
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated 31 August 2026.
Read through reviews of airlines operating flights from San Francisco to Boston, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
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.
What airports do I use to fly from San Francisco to Boston?
Booking a flight from San Francisco (SFO) to Boston Logan Intl (BOS) is your only option if you wish to fly from San Francisco to Boston. On a typical day, there are 36 flights from San Francisco to Logan Intl, all of which are around 5h 36m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from San Francisco to Boston.
How popular is this San Francisco to Boston flight route?
This flight path from San Francisco to Boston Logan Intl was viewed by 2 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?
Alaska Airlines, Delta, and JetBlue can get you from San Francisco to Boston in just under 5h 35m. Your travel time can differ by up to 4h 03m. There are 2696 mi between San Francisco and Boston. Both multi-stop and direct flights can be found to your destination and back.
What is the cheapest airline to fly from San Francisco to Boston round-trip?
Currently priced at £125, Delta will fly you from San Francisco to Boston and back. In addition to Delta, many other airlines offer competitively priced options for your trip. You may be able to fly from San Francisco to Boston for 60% less than the average price by searching for this airline.
What are the most reliable airlines from San Francisco to Boston?
Before booking your flight to Boston from San Francisco, check out the most reliable airlines to get you to your destination on time: ITA Airways (100%), United Airlines (85%), ANA( 85%).
What are the cheapest flights from San Francisco to Boston?
The cheapest flight price from San Francisco to Boston is £235. On average you can expect to pay £331. The most popular route, (San Francisco - Boston Logan Intl), can usually be booked for £217.
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 £247). Flying from San Francisco to Boston in June is currently the most expensive (average of £370). 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 31 August 2026.
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 31 August 2026.
Discover the top airline that operate flights from San Francisco to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 31 August 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?
Cheapflights helps you search for flights from San Francisco to Boston via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from San Francisco to Boston?
Cheapflights simply makes it quick and affordable to book flights from San Francisco to Boston by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from San Francisco to Boston with no change fees?
Need flexible booking options for your flight to Boston from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from San Francisco to Boston become cheaper?
Of course! You can now track prices for flights from San Francisco to Boston and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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