$142+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
Apr 26 — May 31
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 69 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
One-way
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 March 27, 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 March 27, 2026.
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:15 pm
SFO
- BOS
1 stop9h 30m
Southwest
Tue 4/282:25 pm
BOS
- SFO
2 stops10h 45m
Southwest
Deal found 3/22![Southwest logo]()
$255
This Expedia deal was found by Cheapflights users on 3/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1110:23 pm
SFO
- BOS
1 stop10h 22m
Frontier
Tue 4/146:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Deal found 3/22![Frontier logo]()
$256
This CheapOair deal was found by Cheapflights users on 3/23. 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.
Wed 4/810:00 pm
SFO
- BOS
Nonstop5h 40m
Multiple Airlines
Wed 5/612:01 pm
BOS
- SFO
1 stop10h 33m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$259
This Frontier deal was found by Cheapflights users on 3/25. 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.
Mon 4/610:03 pm
SFO
- BOS
1 stop10h 42m
Frontier
Thu 4/95:30 am
BOS
- SFO
1 stop16h 49m
Frontier
Deal found 3/25![Frontier logo]()
$260
This Southwest deal was found by Cheapflights users on 3/23. 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.
Tue 5/57:15 pm
SFO
- BOS
2 stops10h 00m
Southwest
Tue 5/122:25 pm
BOS
- SFO
2 stops11h 50m
Southwest
Deal found 3/23![Southwest logo]()
$261
This Priceline deal was found by Cheapflights users on 3/24. 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.
Sun 4/1910:38 pm
SFO
- BOS
1 stop9h 47m
Multiple Airlines
Sat 4/253:11 pm
BOS
- SFO
1 stop9h 46m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$262
This Expedia deal was found by Cheapflights users on 3/23. 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.
Mon 4/1310:03 pm
SFO
- BOS
1 stop10h 42m
Multiple Airlines
Tue 4/287:00 am
BOS
- SFO
2 stops16h 19m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$263
This Expedia deal was found by Cheapflights users on 3/26. 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.
Sun 4/1910:38 pm
SFO
- BOS
1 stop9h 47m
Multiple Airlines
Tue 4/289:00 am
BOS
- SFO
2 stops17h 01m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$264
This Frontier deal was found by Cheapflights users on 3/26. 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.
Sun 4/1210:23 pm
SFO
- BOS
1 stop10h 22m
Frontier
Wed 4/156:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Deal found 3/26![Frontier logo]()
$265
This CheapTickets deal was found by Cheapflights users on 3/27. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/310:38 pm
SFO
- BOS
1 stop9h 47m
Multiple Airlines
Tue 5/56:20 am
BOS
- SFO
Nonstop6h 45m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$267
This Vliegwinkel deal was found by Cheapflights users on 3/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:38 pm
SFO
- BOS
1 stop10h 09m
Multiple Airlines
Thu 4/238:19 pm
BOS
- SFO
Nonstop6h 40m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$268
This CheapOair deal was found by Cheapflights users on 3/24. 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 4/1910:38 pm
SFO
- BOS
1 stop9h 47m
Multiple Airlines
Wed 4/299:00 am
BOS
- SFO
Nonstop6h 37m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$269
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 March 27, 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 March 27, 2026.
This United Airlines deal was found by Cheapflights users on 3/26. 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 7/1411:05 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Tue 7/216:00 am
BOS
- SFO
Nonstop6h 27m
United Airlines
Deal found 3/26![United Airlines logo]()
$307
This JetBlue deal was found by Cheapflights users on 3/24. 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 5/48:45 pm
SFO
- BOS
Nonstop5h 42m
JetBlue
Wed 5/63:00 pm
BOS
- SFO
1 stop11h 51m
JetBlue
Deal found 3/24![JetBlue logo]()
$330
This Delta deal was found by Cheapflights users on 3/24. 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 5/199:54 pm
SFO
- BOS
Nonstop5h 51m
Delta
Fri 5/228:59 pm
BOS
- SFO
Nonstop6h 33m
Delta
Deal found 3/24![Delta logo]()
$340
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/205:20 am
SFO
- BOS
1 stop12h 45m
Southwest
Wed 6/2411:35 am
BOS
- SFO
1 stop11h 15m
Southwest
Deal found 3/22![Southwest logo]()
$392
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Wed 4/2212:30 pm
SFO
- BOS
Nonstop5h 58m
United Airlines
Sun 4/265:30 am
BOS
- SFO
Nonstop6h 41m
United Airlines
Deal found 3/22![United Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 3/23. 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.
Sat 7/117:00 am
SFO
- BOS
Nonstop5h 45m
Delta
Wed 7/158:55 pm
BOS
- SFO
Nonstop6h 38m
Delta
Deal found 3/23![Delta logo]()
$382
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:25 pm
SFO
- BOS
2 stops10h 35m
Southwest
Mon 9/148:40 am
BOS
- SFO
1 stop11h 55m
Southwest
Deal found 3/22![Southwest logo]()
$400
This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/710:10 pm
SFO
- BOS
Nonstop5h 35m
Delta
Mon 8/108:55 pm
BOS
- SFO
Nonstop7h 01m
Delta
Deal found 3/22![Delta logo]()
$402
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 5/810:17 am
SFO
- BOS
Nonstop5h 50m
United Airlines
Mon 5/118:15 pm
BOS
- SFO
Nonstop6h 43m
United Airlines
Deal found 3/26![United Airlines logo]()
$421
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:00 am
SFO
- BOS
1 stop14h 00m
Southwest
Wed 7/153:45 pm
BOS
- SFO
2 stops10h 40m
Southwest
Deal found 3/22![Southwest logo]()
$428
This Delta deal was found by Cheapflights users on 3/25. 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.
Fri 5/18:35 pm
SFO
- BOS
1 stop11h 40m
Delta
Sun 5/38:45 pm
BOS
- SFO
Nonstop6h 42m
Delta
Deal found 3/25![Delta logo]()
$415
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1111:00 am
SFO
- BOS
1 stop9h 00m
Southwest
Fri 6/195:30 pm
BOS
- SFO
1 stop8h 55m
Southwest
Deal found 3/22![Southwest logo]()
$437
Last-minute flights from San Francisco to BostonDiscover last-minute flight deals from San Francisco to Boston. Data last updated March 27, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Boston. Data last updated March 27, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/25. 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.
Mon 4/610:03 pm
SFO
- BOS
1 stop10h 42m
Frontier
Thu 4/95:30 am
BOS
- SFO
1 stop16h 49m
Frontier
Deal found 3/25![Frontier logo]()
$260
This CheapOair deal was found by Cheapflights users on 3/23. 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.
Wed 4/810:00 pm
SFO
- BOS
Nonstop5h 40m
Multiple Airlines
Wed 5/612:01 pm
BOS
- SFO
1 stop10h 33m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$259
This Expedia deal was found by Cheapflights users on 3/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1110:23 pm
SFO
- BOS
1 stop10h 22m
Frontier
Tue 4/146:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Deal found 3/22![Frontier logo]()
$256
This Frontier deal was found by Cheapflights users on 3/26. 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.
Sun 4/1210:23 pm
SFO
- BOS
1 stop10h 22m
Frontier
Wed 4/156:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Deal found 3/26![Frontier logo]()
$265
This Expedia deal was found by Cheapflights users on 3/23. 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.
Mon 4/1310:03 pm
SFO
- BOS
1 stop10h 42m
Multiple Airlines
Tue 4/287:00 am
BOS
- SFO
2 stops16h 19m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$263
This Vliegwinkel deal was found by Cheapflights users on 3/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:38 pm
SFO
- BOS
1 stop10h 09m
Multiple Airlines
Thu 4/238:19 pm
BOS
- SFO
Nonstop6h 40m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$268
This Expedia deal was found by Cheapflights users on 3/26. 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.
Fri 4/1710:38 pm
SFO
- BOS
1 stop10h 09m
Frontier
Sat 4/256:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Deal found 3/26![Frontier logo]()
$270
This Priceline deal was found by Cheapflights users on 3/24. 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.
Sun 4/1910:38 pm
SFO
- BOS
1 stop9h 47m
Multiple Airlines
Sat 4/253:11 pm
BOS
- SFO
1 stop9h 46m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$262
This Expedia deal was found by Cheapflights users on 3/26. 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.
Sun 4/1910:38 pm
SFO
- BOS
1 stop9h 47m
Multiple Airlines
Tue 4/289:00 am
BOS
- SFO
2 stops17h 01m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$264
This CheapOair deal was found by Cheapflights users on 3/24. 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 4/1910:38 pm
SFO
- BOS
1 stop9h 47m
Multiple Airlines
Wed 4/299:00 am
BOS
- SFO
Nonstop6h 37m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:15 pm
SFO
- BOS
1 stop9h 30m
Southwest
Tue 4/282:25 pm
BOS
- SFO
2 stops10h 45m
Southwest
Deal found 3/22![Southwest logo]()
$255
This Southwest deal was found by Cheapflights users on 3/23. 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.
Tue 4/287:15 pm
SFO
- BOS
2 stops10h 00m
Southwest
Tue 5/122:25 pm
BOS
- SFO
2 stops11h 50m
Southwest
Deal found 3/23![Southwest logo]()
$261
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 March 27, 2026.
Search for one-way flight options from San Francisco to Boston. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:03 pm
SFO
- BOS
2 stops36h 04m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$142
This Super.com deal was found by Cheapflights users on 3/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1210:23 pm
SFO
- BOS
1 stop10h 22m
Frontier
Deal found 3/22![Frontier logo]()
$143
This Frontier deal was found by Cheapflights users on 3/25. 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.
Fri 4/1710:38 pm
SFO
- BOS
1 stop10h 09m
Frontier
Deal found 3/25![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/26. 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.
Tue 4/146:29 pm
SFO
- BOS
2 stops14h 17m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$146
This Super.com deal was found by Cheapflights users on 3/26. 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 5/63:20 pm
SFO
- BOS
Nonstop5h 48m
JetBlue
Deal found 3/26![JetBlue logo]()
$147
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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.
Tue 4/213:10 pm
SFO
- BOS
Nonstop5h 48m
JetBlue
Deal found 3/27![JetBlue logo]()
$148
This Delta deal was found by Cheapflights users on 3/26. 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 4/2810:30 pm
SFO
- BOS
Nonstop5h 55m
Delta
Deal found 3/26![Delta logo]()
$149
This Southwest deal was found by Cheapflights users on 3/26. 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.
Mon 5/119:15 pm
SFO
- BOS
1 stop8h 00m
Southwest
Deal found 3/26![Southwest logo]()
$150
This iWofly deal was found by Cheapflights users on 3/23. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/610:03 pm
SFO
- BOS
1 stop10h 42m
Frontier
Deal found 3/23![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Sat 5/165:25 pm
SFO
- BOS
2 stops36h 47m
Frontier
Deal found 3/25![Frontier logo]()
$152
This Delta deal was found by Cheapflights users on 3/26. 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 7/143:00 pm
SFO
- BOS
Nonstop5h 41m
Delta
Deal found 3/26![Delta logo]()
$154
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 March 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $255 (Southwest) |
One-way from | $142 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $412 |
Good round-trip deal | $342 or less |
Good one-way deal | $203 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 March 27, 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
Quickest round-trip
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 7/14
11:05 pm-8:01 am
Nonstop5h 56m
Boston Logan Intl
Tue 7/21
6:00 am-9:27 am
Nonstop6h 27m
$307
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 5/4
8:45 pm-5:27 am
Nonstop5h 42m
Boston Logan Intl
Wed 5/6
3:00 pm-11:51 pm
1 stop11h 51m
$330
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 4/22
12:30 pm-9:28 pm
Nonstop5h 58m
Boston Logan Intl
Sun 4/26
5:30 am-9:11 am
Nonstop6h 41m
$332
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 5/19
9:54 pm-6:45 am
Nonstop5h 51m
Boston Logan Intl
Fri 5/22
8:59 pm-12:32 am
Nonstop6h 33m
$340
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 7/11
7:00 am-3:45 pm
Nonstop5h 45m
Boston Logan Intl
Wed 7/15
8:55 pm-12:33 am
Nonstop6h 38m
$382
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 6/20
5:20 am-9:05 pm
1 stop12h 45m
Boston Logan Intl
Wed 6/24
11:35 am-7:50 pm
1 stop11h 15m
$392
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 9/9
7:25 pm-9:00 am
2 stops10h 35m
Boston Logan Intl
Mon 9/14
8:40 am-5:35 pm
1 stop11h 55m
$400
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 8/7
10:10 pm-6:45 am
Nonstop5h 35m
Boston Logan Intl
Mon 8/10
8:55 pm-12:56 am
Nonstop7h 01m
$402
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 5/1
8:35 pm-11:15 am
1 stop11h 40m
Boston Logan Intl
Sun 5/3
8:45 pm-12:27 am
Nonstop6h 42m
$415
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 5/8
10:17 am-7:07 pm
Nonstop5h 50m
Boston Logan Intl
Mon 5/11
8:15 pm-11:58 pm
Nonstop6h 43m
$421
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 March.
| 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 Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | 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?
Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Boston. Price data was last updated on March 13, 2026.
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, December is the cheapest month in which you can book a flight from San Francisco to Boston (average of $118). Flying from San Francisco to Boston in January is currently the most expensive (average of $189). 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 March 27, 2026.
It’s typically best to fly out from San Francisco to Boston in the evening. Doing so could potentially save you 11% 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 March 23, 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 at noon 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 16% 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 at night 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 12% 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 March 27, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andHawaiian 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.
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
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 locationsMedford
Cambridge
Concord
Hampton Beach
Watertown
Brockton
Seekonk
Seabrook
Cranston
Chelsea
Lincoln
Warwick
Peabody
Waltham
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy
Lowell
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.
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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 March 27, 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 March 27, 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 March 27, 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 March 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$129 | Average$340 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$150 | Average$389 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$168 | Average$383 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$179 | Average$366 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$205 | Average$401 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$213 | Average$452 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$235 | Average$396 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$400 | FlexibilityNo cancel fee | On-time71% |