Cheap flights from San Francisco to Boston from $194
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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
4 Jan — 11 Jan1
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 69 days in advance, depart on a Monday or Tuesday and return on a Wednesday
Cheap flight deals from San Francisco to Boston
Enter your travel dates to find the best prices.
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 5 December 2025.
Thu 25/1207:30SFO - BOS
Nonstop5h 40mDelta
Wed 7/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 3/12$374
Fri 26/1220:44SFO - BOS
Nonstop5h 31mJetBlue
Wed 7/119:09BOS - SFO
Nonstop6h 50mJetBlue
Deal found 3/12$381
Wed 31/1216:10SFO - BOS
Nonstop5h 43mUnited Airlines
Wed 7/107:55BOS - SFO
Nonstop6h 53mUnited Airlines
Deal found 2/12$383
Sat 27/1213:15SFO - BOS
Nonstop5h 38mJetBlue
Mon 5/116:40BOS - SFO
Nonstop6h 53mJetBlue
Deal found 3/12$386
Wed 31/1206:04SFO - BOS
1 stop7h 45mJetBlue
Wed 31/1219:30BOS - SFO
Nonstop6h 54mJetBlue
Deal found 3/12$408
Fri 26/1221:25SFO - BOS
1 stop7h 50mSouthwest
Wed 7/106:25BOS - SFO
1 stop10h 10mSouthwest
Deal found 3/12$422
Wed 24/1215:22SFO - BOS
Nonstop5h 33mJetBlue
Wed 7/119:09BOS - SFO
Nonstop6h 50mJetBlue
Deal found 3/12$426
Wed 31/1215:22SFO - BOS
Nonstop5h 33mJetBlue
Wed 7/119:09BOS - SFO
Nonstop6h 50mJetBlue
Deal found 3/12$428
Tue 30/1216:10SFO - BOS
Nonstop5h 43mUnited Airlines
Thu 8/110:56BOS - SFO
Nonstop6h 55mUnited Airlines
Deal found 2/12$448
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 5 December 2025.
Tue 27/106:05SFO - BOS
1 stop7h 45mSouthwest
Fri 30/106:50BOS - SFO
1 stop11h 05mSouthwest
Deal found 4/12$333
Sat 10/107:10SFO - BOS
Nonstop5h 41mDelta
Wed 14/107:50BOS - SFO
Nonstop7h 00mDelta
Deal found 4/12$336
Sun 8/223:25SFO - BOS
Nonstop5h 45mUnited Airlines
Wed 11/207:55BOS - SFO
Nonstop6h 53mUnited Airlines
Deal found 4/12$366
Mon 12/108:26SFO - BOS
Nonstop5h 39mJetBlue
Mon 12/119:09BOS - SFO
Nonstop6h 50mJetBlue
Deal found 4/12$366
Tue 13/113:00SFO - BOS
Nonstop5h 37mDelta
Sat 17/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 4/12$336
Fri 9/113:00SFO - BOS
Nonstop5h 37mDelta
Tue 13/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 4/12$343
Sat 10/109:55SFO - BOS
1 stop11h 23mDelta
Tue 13/107:50BOS - SFO
Nonstop7h 00mDelta
Deal found 4/12$357
Sat 10/107:10SFO - BOS
Nonstop5h 41mDelta
Sat 17/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 4/12$358
Fri 9/107:10SFO - BOS
Nonstop5h 41mDelta
Sat 17/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 4/12$366
Sun 11/107:10SFO - BOS
Nonstop5h 41mDelta
Thu 15/107:50BOS - SFO
Nonstop7h 00mDelta
Deal found 4/12$374
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 5 December 2025.
Sun 11/107:10SFO - BOS
Nonstop5h 41mDelta
Thu 22/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 3/12$336
Tue 13/107:10SFO - BOS
Nonstop5h 41mDelta
Thu 15/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 4/12$343
Tue 3/320:41SFO - BOS
Nonstop5h 31mJetBlue
Tue 17/311:00BOS - SFO
Nonstop6h 50mJetBlue
Deal found 4/12$358
Tue 6/113:00SFO - BOS
Nonstop5h 42mUnited Airlines
Tue 13/107:55BOS - SFO
Nonstop6h 55mUnited Airlines
Deal found 3/12$364
Sat 10/122:30SFO - BOS
Nonstop5h 34mJetBlue
Mon 12/115:05BOS - SFO
Nonstop6h 50mJetBlue
Deal found 4/12$366
Sun 11/115:25SFO - BOS
Nonstop5h 33mJetBlue
Mon 12/115:05BOS - SFO
Nonstop6h 50mJetBlue
Deal found 4/12$374
Fri 26/1220:44SFO - BOS
Nonstop5h 31mJetBlue
Wed 7/119:09BOS - SFO
Nonstop6h 50mJetBlue
Deal found 3/12$381
Wed 31/1216:10SFO - BOS
Nonstop5h 43mUnited Airlines
Wed 7/107:55BOS - SFO
Nonstop6h 53mUnited Airlines
Deal found 2/12$383
Mon 2/315:25SFO - BOS
Nonstop5h 33mJetBlue
Wed 4/307:00BOS - SFO
Nonstop7h 00mJetBlue
Deal found 4/12$386
Sat 17/120:29SFO - BOS
Nonstop5h 31mJetBlue
Thu 14/517:55BOS - SFO
Nonstop6h 46mJetBlue
Deal found 3/12$393
Thu 22/113:00SFO - BOS
Nonstop5h 42mUnited Airlines
Tue 27/113:50BOS - SFO
Nonstop6h 55mUnited Airlines
Deal found 3/12$395
Thu 26/216:10SFO - BOS
Nonstop5h 39mUnited Airlines
Mon 2/308:00BOS - SFO
Nonstop7h 00mUnited Airlines
Deal found 3/12$401
Last-minute flights from San Francisco to Boston
Discover last-minute flight deals from San Francisco to Boston. Data last updated 5 December 2025 and is based on user searches.
Wed 7/108:25SFO - BOS
Nonstop5h 48mUnited Airlines
Fri 9/106:00BOS - SFO
1 stop9h 10mUnited Airlines
Deal found 3/12$337
Thu 8/107:10SFO - BOS
Nonstop5h 41mDelta
Wed 14/107:30BOS - SFO
1 stop13h 28mDelta
Deal found 3/12$349
Thu 8/117:50SFO - BOS
2 stops12h 00mSouthwest
Wed 14/106:50BOS - SFO
2 stops10h 30mSouthwest
Deal found 4/12$357
Sun 11/107:10SFO - BOS
Nonstop5h 41mDelta
Wed 21/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 3/12$336
Mon 12/109:50SFO - BOS
1 stop9h 40mSouthwest
Thu 15/105:20BOS - SFO
1 stop8h 55mSouthwest
Deal found 4/12$333
Mon 12/107:10SFO - BOS
Nonstop5h 41mDelta
Sat 24/106:00BOS - SFO
1 stop16h 33mDelta
Deal found 3/12$348
Tue 13/107:10SFO - BOS
Nonstop5h 41mDelta
Thu 15/117:40BOS - SFO
Nonstop7h 02mDelta
Deal found 4/12$343
Wed 14/106:05SFO - BOS
2 stops11h 45mSouthwest
Thu 22/106:50BOS - SFO
2 stops10h 30mSouthwest
Deal found 4/12$354
Fri 16/111:55SFO - BOS
1 stop7h 15mSouthwest
Tue 20/106:25BOS - SFO
1 stop10h 10mSouthwest
Deal found 2/12$363
Tue 20/113:00SFO - BOS
Nonstop5h 42mUnited Airlines
Wed 13/506:00BOS - SFO
1 stop8h 39mUnited Airlines
Deal found 3/12$340
Tue 20/113:00SFO - BOS
Nonstop5h 42mUnited Airlines
Tue 27/114:20BOS - SFO
1 stop10h 15mUnited Airlines
Deal found 4/12$351
Sat 24/120:29SFO - BOS
Nonstop5h 31mJetBlue
Sat 31/119:45BOS - SFO
Nonstop6h 53mJetBlue
Deal found 4/12$358
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 5 December 2025.
Sat 24/112:00SFO - BOS
1 stop8h 54mAlaska Airlines
Deal found 3/12$194
Tue 28/415:20SFO - BOS
Nonstop5h 32mJetBlue
Deal found 3/12$195
Mon 2/316:25SFO - BOS
2 stops13h 25mSouthwest
Deal found 3/12$198
Sat 17/113:00SFO - BOS
Nonstop5h 42mUnited Airlines
Deal found 3/12$201
Thu 22/107:00SFO - BOS
1 stop7h 39mAlaska Airlines
Deal found 4/12$203
Thu 25/1214:05SFO - BOS
Nonstop5h 43mUnited Airlines
Deal found 3/12$207
Tue 6/107:25SFO - BOS
Nonstop5h 47mAlaska Airlines
Deal found 4/12$210
Wed 8/412:55SFO - BOS
1 stop8h 09mUnited Airlines
Deal found 3/12$215
Fri 20/221:30SFO - BOS
1 stop7h 45mSouthwest
Deal found 2/12$218
Sat 10/107:05SFO - BOS
2 stops9h 20mSouthwest
Deal found 3/12$219
Mon 2/319:28SFO - BOS
1 stop8h 26mAlaska Airlines
Deal found 4/12$221
Fri 23/120:37SFO - BOS
1 stop8h 20mJetBlue
Deal found 4/12$222
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 5 December 2025.
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 647,157 searches. Data last updated 5 December 2025.
Use the filters below to find and compare flights from San Francisco to Boston that are best for you.
Fly from
San Francisco
Fly to
Boston
Route
Depart
Return
Price
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 27/1
06:05-16:50
1 stop7h 45m
Boston Logan Intl
Fri 30/1
06:50-14:55
1 stop11h 05m
$333
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 10/1
07:10-15:51
Nonstop5h 41m
Boston Logan Intl
Wed 14/1
07:50-11:50
Nonstop7h 00m
$336
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 13/1
13:00-21:37
Nonstop5h 37m
Boston Logan Intl
Sat 17/1
17:40-21:42
Nonstop7h 02m
$336
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 9/1
13:00-21:37
Nonstop5h 37m
Boston Logan Intl
Tue 13/1
17:40-21:42
Nonstop7h 02m
$343
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 10/1
09:55-00:18
1 stop11h 23m
Boston Logan Intl
Tue 13/1
07:50-11:50
Nonstop7h 00m
$357
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 10/1
07:10-15:51
Nonstop5h 41m
Boston Logan Intl
Sat 17/1
17:40-21:42
Nonstop7h 02m
$358
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 8/2
23:25-08:10
Nonstop5h 45m
Boston Logan Intl
Wed 11/2
07:55-11:48
Nonstop6h 53m
$366
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 12/1
08:26-17:05
Nonstop5h 39m
Boston Logan Intl
Mon 12/1
19:09-22:59
Nonstop6h 50m
$366
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 9/1
07:10-15:51
Nonstop5h 41m
Boston Logan Intl
Sat 17/1
17:40-21:42
Nonstop7h 02m
$366
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 11/1
07:10-15:51
Nonstop5h 41m
Boston Logan Intl
Thu 15/1
07:50-11:50
Nonstop7h 00m
$374
Flights are sorted by cheapest return flights first.
Deals found on 3/12
Showing 1-10 of 21 results
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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.
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?
Use this chart to determine the optimal time to book a return flight from San Francisco to Boston. Price data was last updated on 28 November 2025.
The best time to book flights from San Francisco to Boston is 69 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, February is the cheapest month in which you can book a flight from San Francisco to Boston (average of $180). Flying from San Francisco to Boston in June is currently the most expensive (average of $331). 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 5 December 2025.
It’s optimal to fly from San Francisco to Boston in the afternoon. By choosing this option you can save up to 76% on the cost of your flight, compared to a flight at midday.
How much does it cost for a return flight from San Francisco to Boston?
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 5 December 2025.
The most flights from SFO to BOS are scheduled on a Thursday (42 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 15% of weekly flights between San Francisco and Boston have experienced delays in the past year, with the average delay time being 172 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, Alaska Airlines have had the lowest number of delays on this route, with just 11% 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 7 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 Southwest and Delta fly from San Francisco to Boston in about 5h 41m. The time it takes to get you to your destination can typically vary by up to 2h 04m. 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 Air China(100%), American Airlines(92%) or Fiji Airways(88%), 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, February is the cheapest month in which you can book a flight from San Francisco to Boston (average of $180). Flying from San Francisco to Boston in June is currently the most expensive (average of $331). 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 5 December 2025.
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 5 December 2025.
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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