Cheap flights from Boston to San Francisco from $182
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 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SFO
1 Jan — 8 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to San Francisco are usually found in September or January, booked 90 days in advance, depart on a Wednesday or Monday and return on a Monday
Cheap flight deals from Boston to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Francisco (SFO). 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 2 December 2025.
Explore the most affordable flight options available from Boston to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 December 2025.
Tue 23/1211:00BOS - SFO
Nonstop6h 49mJetBlue
Sat 27/1220:44SFO - BOS
Nonstop5h 31mJetBlue
Deal found 30/11$362
Thu 25/1208:00BOS - SFO
Nonstop6h 55mJetBlue
Wed 31/1208:14SFO - BOS
Nonstop5h 39mJetBlue
Deal found 30/11$373
Sun 14/1220:05BOS - SFO
Nonstop6h 54mDelta
Wed 7/113:00SFO - BOS
Nonstop5h 37mDelta
Deal found 30/11$377
Mon 15/1210:15BOS - SFO
Nonstop6h 46mJetBlue
Tue 6/115:25SFO - BOS
Nonstop5h 33mJetBlue
Deal found 30/11$385
Tue 16/1220:05BOS - SFO
Nonstop6h 54mDelta
Sat 24/107:10SFO - BOS
Nonstop5h 41mDelta
Deal found 29/11$400
Sat 13/1207:25BOS - SFO
Nonstop6h 57mDelta
Tue 16/1221:41SFO - BOS
Nonstop5h 43mDelta
Deal found 29/11$408
Mon 15/1220:05BOS - SFO
Nonstop6h 54mDelta
Tue 6/107:10SFO - BOS
Nonstop5h 41mDelta
Deal found 30/11$412
Tue 16/1206:00BOS - SFO
1 stop8h 49mUnited Airlines
Sat 24/111:10SFO - BOS
Nonstop5h 46mUnited Airlines
Deal found 29/11$415
Mon 22/1219:50BOS - SFO
Nonstop6h 54mJetBlue
Mon 29/1213:15SFO - BOS
Nonstop5h 38mJetBlue
Deal found 1/12$417
Mon 15/1220:05BOS - SFO
Nonstop6h 54mDelta
Wed 7/105:55SFO - BOS
1 stop21h 19mDelta
Deal found 30/11$420
Tue 16/1205:45BOS - SFO
1 stop10h 35mSouthwest
Mon 12/109:50SFO - BOS
1 stop9h 40mSouthwest
Deal found 1/12$426
Best flights from Boston to San Francisco
Discover carefully curated flight deals from Boston to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 December 2025.
Wed 21/106:50BOS - SFO
2 stops10h 30mSouthwest
Mon 26/107:40SFO - BOS
2 stops11h 25mSouthwest
Deal found 1/12$360
Wed 7/119:09BOS - SFO
Nonstop6h 50mJetBlue
Sun 11/120:29SFO - BOS
Nonstop5h 31mJetBlue
Deal found 30/11$370
Wed 14/117:20BOS - SFO
1 stop18h 51mAlaska Airlines
Wed 21/107:00SFO - BOS
1 stop7h 39mAlaska Airlines
Deal found 1/12$376
Tue 10/207:50BOS - SFO
Nonstop7h 00mDelta
Mon 16/207:10SFO - BOS
Nonstop5h 39mDelta
Deal found 1/12$382
Fri 9/113:50BOS - SFO
Nonstop6h 55mUnited Airlines
Thu 15/123:20SFO - BOS
1 stop8h 16mUnited Airlines
Deal found 1/12$408
Mon 2/219:09BOS - SFO
Nonstop6h 50mJetBlue
Wed 4/208:26SFO - BOS
Nonstop5h 39mJetBlue
Deal found 30/11$370
Tue 3/216:20BOS - SFO
1 stop9h 27mAlaska Airlines
Thu 5/221:42SFO - BOS
1 stop14h 38mAlaska Airlines
Deal found 30/11$399
Thu 23/416:35BOS - SFO
Nonstop6h 55mJetBlue
Tue 28/421:30SFO - BOS
Nonstop5h 33mJetBlue
Deal found 1/12$389
Sun 5/407:00BOS - SFO
Nonstop6h 55mJetBlue
Wed 8/415:20SFO - BOS
Nonstop5h 32mJetBlue
Deal found 30/11$389
Wed 7/119:09BOS - SFO
Nonstop6h 50mJetBlue
Sat 10/107:00SFO - BOS
1 stop9h 51mJetBlue
Deal found 30/11$397
Fri 20/210:19BOS - SFO
Nonstop6h 56mJetBlue
Fri 27/215:25SFO - BOS
Nonstop5h 33mJetBlue
Deal found 1/12$417
Direct flights from Boston to San Francisco
Explore direct flight options from Boston to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 2 December 2025.
Wed 21/115:05BOS - SFO
Nonstop6h 50mJetBlue
Wed 4/208:26SFO - BOS
Nonstop5h 39mJetBlue
Deal found 30/11$347
Wed 7/119:09BOS - SFO
Nonstop6h 50mJetBlue
Sat 10/115:25SFO - BOS
Nonstop5h 33mJetBlue
Deal found 30/11$354
Tue 24/207:00BOS - SFO
Nonstop7h 00mJetBlue
Sat 28/220:41SFO - BOS
Nonstop5h 31mJetBlue
Deal found 30/11$362
Tue 20/119:09BOS - SFO
Nonstop6h 50mJetBlue
Sun 25/115:25SFO - BOS
Nonstop5h 33mJetBlue
Deal found 30/11$370
Mon 12/110:00BOS - SFO
Nonstop6h 55mJetBlue
Tue 20/120:29SFO - BOS
Nonstop5h 31mJetBlue
Deal found 30/11$371
Thu 25/1208:00BOS - SFO
Nonstop6h 55mJetBlue
Wed 31/1208:14SFO - BOS
Nonstop5h 39mJetBlue
Deal found 30/11$373
Sat 24/119:45BOS - SFO
Nonstop6h 53mJetBlue
Fri 30/120:29SFO - BOS
Nonstop5h 31mJetBlue
Deal found 1/12$377
Tue 13/108:50BOS - SFO
Nonstop6h 55mJetBlue
Mon 19/120:29SFO - BOS
Nonstop5h 31mJetBlue
Deal found 30/11$382
Mon 15/1210:15BOS - SFO
Nonstop6h 46mJetBlue
Sat 10/122:30SFO - BOS
Nonstop5h 34mJetBlue
Deal found 30/11$385
Tue 24/207:00BOS - SFO
Nonstop7h 00mJetBlue
Fri 6/312:59SFO - BOS
Nonstop5h 38mJetBlue
Deal found 30/11$389
Thu 29/119:09BOS - SFO
Nonstop6h 50mJetBlue
Mon 2/208:26SFO - BOS
Nonstop5h 39mJetBlue
Deal found 30/11$392
Tue 16/1220:05BOS - SFO
Nonstop6h 54mDelta
Sat 24/107:10SFO - BOS
Nonstop5h 41mDelta
Deal found 29/11$400
Last-minute flights from Boston to San Francisco
Discover last-minute flight deals from Boston to San Francisco. Data last updated 2 December 2025 and is based on user searches.
Thu 25/1208:00BOS - SFO
Nonstop6h 55mJetBlue
Wed 31/1208:14SFO - BOS
Nonstop5h 39mJetBlue
Deal found 30/11$373
Mon 12/106:50BOS - SFO
2 stops10h 30mSouthwest
Mon 19/121:30SFO - BOS
1 stop8h 20mSouthwest
Deal found 1/12$357
Wed 14/107:00BOS - SFO
1 stop10h 00mAlaska Airlines
Tue 20/117:02SFO - BOS
1 stop21h 37mAlaska Airlines
Deal found 30/11$376
Sun 18/105:50BOS - SFO
1 stop10h 35mSouthwest
Wed 28/107:40SFO - BOS
2 stops11h 50mSouthwest
Deal found 1/12$350
Tue 20/110:56BOS - SFO
Nonstop6h 55mUnited Airlines
Tue 27/122:50SFO - BOS
1 stop9h 22mUnited Airlines
Deal found 30/11$362
Tue 20/107:50BOS - SFO
Nonstop7h 00mDelta
Sun 25/107:10SFO - BOS
Nonstop5h 41mDelta
Deal found 30/11$370
Tue 20/107:50BOS - SFO
Nonstop7h 00mDelta
Tue 27/116:03SFO - BOS
1 stop11h 11mDelta
Deal found 1/12$374
Wed 21/107:50BOS - SFO
Nonstop7h 00mDelta
Wed 4/213:00SFO - BOS
Nonstop5h 37mDelta
Deal found 29/11$347
Wed 21/106:50BOS - SFO
2 stops10h 30mSouthwest
Mon 26/107:40SFO - BOS
2 stops11h 25mSouthwest
Deal found 30/11$348
Wed 28/106:50BOS - SFO
2 stops10h 30mSouthwest
Sat 31/107:05SFO - BOS
2 stops9h 20mSouthwest
Deal found 1/12$354
One-way flights from Boston to San Francisco
Search for one-way flight options from Boston to San Francisco. Find affordable one-way fares based on user searches. Data last updated 2 December 2025.
Sat 28/205:40BOS - SFO
1 stop11h 10mSouthwest
Deal found 30/11$182
Tue 6/105:50BOS - SFO
1 stop10h 25mSouthwest
Deal found 30/11$186
Tue 27/107:00BOS - SFO
1 stop11h 50mAlaska Airlines
Deal found 30/11$188
Tue 3/210:30BOS - SFO
1 stop10h 06mUnited Airlines
Deal found 30/11$189
Thu 25/1208:00BOS - SFO
Nonstop6h 55mJetBlue
Deal found 30/11$192
Sun 18/106:00BOS - SFO
1 stop10h 24mFrontier
Deal found 30/11$194
Tue 6/117:12BOS - SFO
1 stop9h 37mAlaska Airlines
Deal found 1/12$195
Fri 9/113:50BOS - SFO
Nonstop6h 55mUnited Airlines
Deal found 30/11$197
Mon 15/1218:52BOS - SFO
Nonstop6h 56mAlaska Airlines
Deal found 30/11$205
Fri 20/218:10BOS - SFO
1 stop8h 55mSouthwest
Deal found 30/11$206
Cheapflights Fare Finder
Customise your flight search to find flights from Boston to San Francisco 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 2 December 2025.
Use the filters below to find and compare flights from Boston to San Francisco that are best for you.
Fly from
Boston
Fly to
San Francisco
Route
Depart
Return
Price
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Wed 21/1
06:50-14:20
2 stops10h 30m
San Francisco
Mon 26/1
07:40-22:05
2 stops11h 25m
$360
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Wed 7/1
19:09-22:59
Nonstop6h 50m
San Francisco
Sun 11/1
20:29-05:00
Nonstop5h 31m
$370
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Mon 2/2
19:09-22:59
Nonstop6h 50m
San Francisco
Wed 4/2
08:26-17:05
Nonstop5h 39m
$370
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Wed 14/1
17:20-09:11
1 stop18h 51m
San Francisco
Wed 21/1
07:00-17:39
1 stop7h 39m
$376
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Tue 10/2
07:50-11:50
Nonstop7h 00m
San Francisco
Mon 16/2
07:10-15:49
Nonstop5h 39m
$382
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Thu 23/4
16:35-20:30
Nonstop6h 55m
San Francisco
Tue 28/4
21:30-06:03
Nonstop5h 33m
$389
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Sun 5/4
07:00-10:55
Nonstop6h 55m
San Francisco
Wed 8/4
15:20-23:52
Nonstop5h 32m
$389
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Wed 7/1
19:09-22:59
Nonstop6h 50m
San Francisco
Sat 10/1
07:00-19:51
1 stop9h 51m
$397
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Tue 3/2
16:20-22:47
1 stop9h 27m
San Francisco
Thu 5/2
21:42-15:20
1 stop14h 38m
$399
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Fri 9/1
13:50-17:45
Nonstop6h 55m
San Francisco
Thu 15/1
23:20-10:36
1 stop8h 16m
$408
Flights are sorted by cheapest return flights first.
Deals found on 1/12
Showing 1-10 of 23 results
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Best time to book a flight from Boston to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Boston 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 Boston to San Francisco
Prices
Airlines
Delays
How far ahead should I book a flight from Boston to San Francisco?
Use this chart to determine the optimal time to book a return flight from Boston to San Francisco. Price data was last updated on 28 November 2025.
The price you pay for your flight from Boston to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Boston to San Francisco?
Currently, March is the cheapest month in which you can book a flight from Boston to San Francisco (average of $150). Flying from Boston to San Francisco in May is currently the most expensive (average of $273). 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 BOS to SFO?
Find hourly flight availability from Boston to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 December 2025.
A simple way to save on the total cost of your ticket is to fly from Boston to San Francisco in the morning. If you’re flexible enough to do this you can expect to save up to 85% on your trip compared to booking a flight in the afternoon.
Weekly flight availability from Boston to San Francisco
Explore weekly flight availability from Boston to San Francisco. 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 2 December 2025.
The most flights from BOS to SFO are scheduled on a Monday (47 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).
How often are flights from Boston to San Francisco delayed?
About 15% of weekly flights between Boston and San Francisco have experienced delays in the past year, with the average delay time being 168 minutes.
What is the most punctual flight time for Boston to San Francisco flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to San Francisco flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from Boston to San Francisco. 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 Boston to San Francisco flight route?
Flights from Boston Logan Intl to San Francisco have been viewed 26 times in the past calendar month.
How long is the flight from Boston to San Francisco?
Departing from Boston to San Francisco will take you 6h 50m. The distance between Boston and San Francisco is about 4339 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from Boston to San Francisco one-way?
$182 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $189 and $197, respectively.
What are the most reliable airlines from Boston to San Francisco?
The top 3 most reliable airlines when flying from Boston to San Francisco are China Eastern (100%), Air China (97%) and ANA (93%).
What are the cheapest flights from Boston to San Francisco?
While on average a flight from Boston to San Francisco is generally $372, our data shows the cheapest flight currently is $196. When looking at the most popular route, (Boston Logan Intl - San Francisco), you can expect to pay $362 for that flight.
Can I find deals for business class flights from Boston to San Francisco?
Yes. Cheapflights offers flight deals from Boston to San Francisco 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 Boston to San Francisco?
Currently, March is the cheapest month in which you can book a flight from Boston to San Francisco (average of $150). Flying from Boston to San Francisco in May is currently the most expensive (average of $273). 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 San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 2 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 Boston to San Francisco?
Cheapflights helps you search for flights from Boston to San Francisco 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 Boston to San Francisco?
Millions of users choose and trust Cheapflights to book the best flight deals from Boston to San Francisco 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 Boston to San Francisco with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to San Francisco flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Boston to San Francisco become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Boston today and book when prices fit your budget.
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