$169+ Cheap flights from San Francisco to Boston (SFO - BOS)
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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
Jul 23 — Jul 301
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Boston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or September, booked 72 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday
Cheap flight deals from San Francisco to Boston
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Best
Last-minute
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Cheapest flights from San Francisco to BostonExplore 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 June 23, 2026.
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 June 23, 2026.
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:56 pm
SFO
- BOS
1 stop8h 02m
United Airlines
Wed 7/156:00 am
BOS
- SFO
Nonstop6h 27m
United Airlines
Deal found 6/23![United Airlines logo]()
$315
This Expedia deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:35 pm
SFO
- BOS
1 stop10h 12m
Multiple Airlines
Sat 8/298:55 pm
BOS
- SFO
Nonstop6h 35m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$316
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:56 pm
SFO
- BOS
1 stop8h 02m
United Airlines
Fri 7/176:00 am
BOS
- SFO
Nonstop6h 27m
United Airlines
Deal found 6/21![United Airlines logo]()
$317
This JetBlue deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:50 am
SFO
- BOS
Nonstop5h 59m
JetBlue
Fri 9/184:00 pm
BOS
- SFO
1 stop10h 31m
JetBlue
Deal found 6/22![JetBlue logo]()
$318
This Cheapflightsfares deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:45 am
SFO
- BOS
Nonstop5h 49m
JetBlue
Tue 9/296:55 am
BOS
- SFO
Nonstop6h 35m
JetBlue
Deal found 6/21![JetBlue logo]()
$319
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:15 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Mon 7/138:20 pm
BOS
- SFO
Nonstop6h 37m
United Airlines
Deal found 6/21![United Airlines logo]()
$320
This CheapOair deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:18 pm
SFO
- BOS
Nonstop5h 41m
Multiple Airlines
Sun 8/2312:45 pm
BOS
- SFO
1 stop9h 18m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$321
This CheapOair deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:35 pm
SFO
- BOS
1 stop10h 12m
Multiple Airlines
Fri 8/284:30 pm
BOS
- SFO
1 stop11h 08m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$322
This JetBlue deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:44 pm
SFO
- BOS
Nonstop5h 44m
JetBlue
Tue 9/112:57 pm
BOS
- SFO
1 stop12h 14m
JetBlue
Deal found 6/22![JetBlue logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:16 pm
SFO
- BOS
1 stop9h 33m
Multiple Airlines
Mon 9/2111:28 am
BOS
- SFO
1 stop9h 52m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:10 pm
SFO
- BOS
Nonstop5h 52m
United Airlines
Sun 8/166:00 am
BOS
- SFO
Nonstop6h 30m
United Airlines
Deal found 6/18![United Airlines logo]()
$325
This Orbitz deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Mon 8/319:36 am
BOS
- SFO
1 stop12h 27m
Frontier
Deal found 6/19![Frontier logo]()
$326
Best flights from San Francisco to BostonDiscover carefully curated flight deals from San Francisco to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 23, 2026.
Discover carefully curated flight deals from San Francisco to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 23, 2026.
This JetBlue deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:59 pm
SFO
- BOS
Nonstop5h 42m
JetBlue
Thu 8/204:30 pm
BOS
- SFO
1 stop11h 08m
JetBlue
Deal found 6/22![JetBlue logo]()
$317
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:00 pm
SFO
- BOS
Nonstop5h 41m
Delta
Mon 7/208:55 pm
BOS
- SFO
Nonstop6h 38m
Delta
Deal found 6/21![Delta logo]()
$332
This Southwest deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:30 pm
SFO
- BOS
1 stop8h 55m
Southwest
Mon 8/175:00 am
BOS
- SFO
1 stop8h 35m
Southwest
Deal found 6/20![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/19:25 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Sat 8/227:45 am
BOS
- SFO
Nonstop6h 30m
United Airlines
Deal found 6/20![United Airlines logo]()
$406
This Alaska Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:55 am
SFO
- BOS
1 stop18h 45m
Alaska Airlines
Wed 8/198:00 am
BOS
- SFO
2 stops13h 01m
Alaska Airlines
Deal found 6/19![Alaska Airlines logo]()
$418
This JetBlue deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:44 pm
SFO
- BOS
Nonstop5h 44m
JetBlue
Wed 9/24:39 pm
BOS
- SFO
1 stop10h 59m
JetBlue
Deal found 6/22![JetBlue logo]()
$323
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/89:48 pm
SFO
- BOS
Nonstop5h 42m
Delta
Fri 8/148:55 pm
BOS
- SFO
Nonstop6h 38m
Delta
Deal found 6/20![Delta logo]()
$332
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/211:40 pm
SFO
- BOS
2 stops9h 30m
Southwest
Wed 8/128:30 am
BOS
- SFO
1 stop10h 55m
Southwest
Deal found 6/18![Southwest logo]()
$397
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/610:00 pm
SFO
- BOS
Nonstop5h 44m
Delta
Mon 8/37:35 am
BOS
- SFO
Nonstop6h 34m
Delta
Deal found 6/19![Delta logo]()
$412
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/269:25 am
SFO
- BOS
1 stop10h 45m
Southwest
Wed 8/55:35 am
BOS
- SFO
1 stop8h 00m
Southwest
Deal found 6/18![Southwest logo]()
$415
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:29 pm
SFO
- BOS
1 stop7h 45m
United Airlines
Wed 7/156:43 pm
BOS
- SFO
1 stop8h 49m
United Airlines
Deal found 6/23![United Airlines logo]()
$457
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:30 am
SFO
- BOS
2 stops10h 40m
Southwest
Tue 8/183:20 pm
BOS
- SFO
2 stops10h 00m
Southwest
Deal found 6/18![Southwest logo]()
$417
Last-minute flights from San Francisco to BostonDiscover last-minute flight deals from San Francisco to Boston. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Boston. Data last updated June 23, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/611:00 pm
SFO
- BOS
1 stop8h 57m
Multiple Airlines
Thu 7/98:55 pm
BOS
- SFO
Nonstop6h 35m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$323
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:15 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Tue 7/215:45 am
BOS
- SFO
1 stop8h 34m
United Airlines
Deal found 6/21![United Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:15 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Mon 7/138:20 pm
BOS
- SFO
Nonstop6h 37m
United Airlines
Deal found 6/21![United Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:56 pm
SFO
- BOS
1 stop8h 02m
United Airlines
Wed 7/156:00 am
BOS
- SFO
Nonstop6h 27m
United Airlines
Deal found 6/23![United Airlines logo]()
$315
This Cheapflightsfares deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:44 pm
SFO
- BOS
Nonstop5h 44m
JetBlue
Fri 7/108:55 pm
BOS
- SFO
Nonstop6h 35m
JetBlue
Deal found 6/21![JetBlue logo]()
$319
This JetBlue deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:18 pm
SFO
- BOS
Nonstop5h 41m
JetBlue
Mon 7/138:55 pm
BOS
- SFO
Nonstop6h 35m
JetBlue
Deal found 6/19![JetBlue logo]()
$325
This Kissandfly.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1111:00 pm
SFO
- BOS
1 stop8h 57m
Frontier
Sat 7/187:20 am
BOS
- SFO
Nonstop6h 31m
Frontier
Deal found 6/19![Frontier logo]()
$324
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:56 pm
SFO
- BOS
1 stop8h 02m
United Airlines
Fri 7/176:00 am
BOS
- SFO
Nonstop6h 27m
United Airlines
Deal found 6/21![United Airlines logo]()
$317
This CheapOair deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1911:58 pm
SFO
- BOS
Nonstop5h 42m
Multiple Airlines
Wed 8/511:59 am
BOS
- SFO
1 stop10h 14m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2112:48 am
SFO
- BOS
1 stop8h 15m
American Airlines
Wed 7/297:37 pm
BOS
- SFO
1 stop8h 22m
American Airlines
Deal found 6/23![American Airlines logo]()
$316
One-way flights from San Francisco to BostonSearch for one-way flight options from San Francisco to Boston. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
Search for one-way flight options from San Francisco to Boston. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:05 pm
SFO
- BOS
2 stops12h 50m
Southwest
Deal found 6/23![Southwest logo]()
$169
This Super.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:48 pm
SFO
- BOS
1 stop10h 17m
Frontier
Deal found 6/23![Frontier logo]()
$172
This United Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:25 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Deal found 6/19![United Airlines logo]()
$173
This Priceline deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:16 pm
SFO
- BOS
1 stop9h 33m
Alaska Airlines
Deal found 6/21![Alaska Airlines logo]()
$174
This deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:05 pm
SFO
- BOS
1 stop8h 52m
Frontier
Deal found 6/21![Frontier logo]()
$175
This Frontier deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:00 pm
SFO
- BOS
1 stop8h 57m
Frontier
Deal found 6/22![Frontier logo]()
$176
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1811:05 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Deal found 6/22![United Airlines logo]()
$178
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 am
SFO
- BOS
Nonstop5h 45m
Delta
Deal found 6/23![Delta logo]()
$179
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:56 pm
SFO
- BOS
1 stop8h 02m
United Airlines
Deal found 6/20![United Airlines logo]()
$180
This Cheapflightsfares deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:15 pm
SFO
- BOS
Nonstop5h 43m
JetBlue
Deal found 6/21![JetBlue logo]()
$181
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:15 pm
SFO
- BOS
1 stop7h 44m
United Airlines
Deal found 6/20![United Airlines logo]()
$183
This American Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/189:20 pm
SFO
- BOS
1 stop9h 14m
American Airlines
Deal found 6/21![American Airlines logo]()
$184
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 June 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $315 (United Airlines) |
One-way from | $169 (Southwest) |
Popular in | June |
Cheapest in | January |
Average price | $498 |
Good round-trip deal | $414 or less |
Good one-way deal | $222 or less |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated June 23, 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
Cheapest round-trip
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 8/17
11:59 pm-8:41 am
Nonstop5h 42m
Boston Logan Intl
Thu 8/20
4:30 pm-12:38 am
1 stop11h 08m
$317
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 8/31
9:44 pm-6:28 am
Nonstop5h 44m
Boston Logan Intl
Wed 9/2
4:39 pm-12:38 am
1 stop10h 59m
$323
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 7/15
3:00 pm-11:41 pm
Nonstop5h 41m
Boston Logan Intl
Mon 7/20
8:55 pm-12:33 am
Nonstop6h 38m
$332
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 8/8
9:48 pm-6:30 am
Nonstop5h 42m
Boston Logan Intl
Fri 8/14
8:55 pm-12:33 am
Nonstop6h 38m
$332
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 8/13
12:30 pm-12:25 am
1 stop8h 55m
Boston Logan Intl
Mon 8/17
5:00 am-10:35 am
1 stop8h 35m
$347
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 8/2
11:40 pm-12:10 pm
2 stops9h 30m
Boston Logan Intl
Wed 8/12
8:30 am-4:25 pm
1 stop10h 55m
$397
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 8/1
9:25 pm-6:21 am
Nonstop5h 56m
Boston Logan Intl
Sat 8/22
7:45 am-11:15 am
Nonstop6h 30m
$406
Quickest round-trip
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 7/6
10:00 pm-6:44 am
Nonstop5h 44m
Boston Logan Intl
Mon 8/3
7:35 am-11:09 am
Nonstop6h 34m
$412
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 7/26
9:25 am-11:10 pm
1 stop10h 45m
Boston Logan Intl
Wed 8/5
5:35 am-10:35 am
1 stop8h 00m
$415
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 8/6
8:30 am-10:10 pm
2 stops10h 40m
Boston Logan Intl
Tue 8/18
3:20 pm-10:20 pm
2 stops10h 00m
$417
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Boston
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Boston in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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 round-trip 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 71 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 $334). Flying from San Francisco to Boston in June is currently the most expensive (average of $498). 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 June 23, 2026.
It’s typically best to fly out from San Francisco to Boston in the afternoon. Doing so could potentially save you 16% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from San Francisco to Boston?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Boston. Price data was last updated on June 20, 2026.
Travelers seeking maximum savings on their San Francisco to Boston flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from San Francisco to Boston delayed?
About 17% of weekly flights between San Francisco and Boston have experienced delays in the past year, with the average delay time being 174 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 last year, Alaska Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.
The best insider tips for San Francisco to Boston flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Boston trip
Our travel experts
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 June 23, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andUnited Airlines from San Francisco to Boston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Cambridge
Concord
Brockton
Watertown
Hampton Beach
Seekonk
Cranston
Warwick
Peabody
Auburn
Fitchburg
York Beach
Chelsea
Londonderry
Dedham
Swansea
Lowell
Smithfield
Braintree
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
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Alternative routes for San Francisco to Boston
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 23, 2026.
Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Boston by cabin class
Find flights from San Francisco to Boston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and Boston flights
Browse other San Francisco and Boston flight options. Last updated on June 23, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on June 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 9 airlines flying from San Francisco to Boston
Discover the top 9 airlines 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 2,558,603 searches. Data last updated June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$221 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$298 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$161 | Average$416 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$192 | Average$415 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$195 | Average$379 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$205 | Average$412 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$212 | Average$369 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$231 | Average$486 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$400 | FlexibilityNo cancel fee | On-time71% |