$126+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
Mar 5 — Mar 121
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 February or January, 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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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 February 3, 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 February 3, 2026.
This Delta deal was found by Cheapflights users on 2/1. 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 3/101:00 pm
SFO
- BOS
Nonstop5h 39m
Delta
Tue 3/175:20 pm
BOS
- SFO
Nonstop6h 53m
Delta
Deal found 2/1![Delta logo]()
$212
This Expedia deal was found by Cheapflights users on 2/1. 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 3/1110:38 pm
SFO
- BOS
1 stop10h 03m
Multiple Airlines
Wed 3/187:10 am
BOS
- SFO
Nonstop7h 00m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$214
This Jetabroad deal was found by Cheapflights users on 2/1. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2511:34 am
SFO
- BOS
1 stop9h 25m
Hawaiian Airlines
Wed 3/49:02 am
BOS
- SFO
1 stop9h 46m
Hawaiian Airlines
Deal found 2/1![Hawaiian Airlines logo]()
$216
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Tue 2/2411:34 am
SFO
- BOS
1 stop9h 25m
Alaska Airlines
Tue 3/39:02 am
BOS
- SFO
1 stop12h 05m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$217
This Expedia deal was found by Cheapflights users on 2/2. 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 5/1610:38 pm
SFO
- BOS
1 stop10h 07m
Multiple Airlines
Sat 5/235:55 pm
BOS
- SFO
Nonstop6h 46m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$219
This Expedia deal was found by Cheapflights users on 2/2. 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 3/2512:20 pm
SFO
- BOS
Nonstop5h 38m
Multiple Airlines
Wed 4/85:45 am
BOS
- SFO
1 stop16h 29m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$220
This Frontier deal was found by Cheapflights users on 2/2. 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.
Sat 4/1810:38 pm
SFO
- BOS
1 stop10h 07m
Frontier
Wed 4/226:00 am
BOS
- SFO
1 stop13h 54m
Frontier
Deal found 2/2![Frontier logo]()
$221
This United Airlines deal was found by Cheapflights users on 1/31. 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 3/311:59 pm
SFO
- BOS
1 stop7h 51m
United Airlines
Thu 3/55:45 am
BOS
- SFO
Nonstop6h 58m
United Airlines
Deal found 1/31![United Airlines logo]()
$222
This Super.com deal was found by Cheapflights users on 2/1. 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.
Tue 3/38:44 pm
SFO
- BOS
Nonstop5h 31m
JetBlue
Tue 3/107:10 am
BOS
- SFO
Nonstop7h 00m
JetBlue
Deal found 2/1![JetBlue logo]()
$223
This CheapOair deal was found by Cheapflights users on 2/2. 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 5/910:38 pm
SFO
- BOS
1 stop10h 07m
Multiple Airlines
Tue 5/196:50 am
BOS
- SFO
Nonstop6h 39m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$224
This Expedia deal was found by Cheapflights users on 2/2. 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 4/292:10 pm
SFO
- BOS
Nonstop5h 41m
Multiple Airlines
Tue 5/56:00 am
BOS
- SFO
1 stop13h 54m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 3/108:20 am
SFO
- BOS
Nonstop5h 39m
JetBlue
Tue 3/176:09 pm
BOS
- SFO
Nonstop6h 50m
JetBlue
Deal found 2/2![JetBlue logo]()
$226
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 February 3, 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 February 3, 2026.
This Delta deal was found by Cheapflights users on 2/1. 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 5/271:00 pm
SFO
- BOS
Nonstop5h 50m
Delta
Tue 6/28:50 pm
BOS
- SFO
Nonstop6h 33m
Delta
Deal found 2/1![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/2411:15 am
SFO
- BOS
Nonstop5h 41m
United Airlines
Thu 2/2611:00 am
BOS
- SFO
Nonstop6h 52m
United Airlines
Deal found 2/2![United Airlines logo]()
$247
This JetBlue deal was found by Cheapflights users on 2/1. 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.
Sat 6/610:55 pm
SFO
- BOS
Nonstop5h 38m
JetBlue
Mon 8/1010:25 am
BOS
- SFO
Nonstop6h 35m
JetBlue
Deal found 2/1![JetBlue logo]()
$265
This Delta deal was found by Cheapflights users on 2/2. 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 2/167:10 am
SFO
- BOS
Nonstop5h 39m
Delta
Mon 3/95:20 pm
BOS
- SFO
Nonstop6h 53m
Delta
Deal found 2/2![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/194:10 pm
SFO
- BOS
Nonstop5h 39m
United Airlines
Fri 2/2012:05 pm
BOS
- SFO
1 stop9h 11m
United Airlines
Deal found 2/2![United Airlines logo]()
$277
This JetBlue deal was found by Cheapflights users on 2/1. 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.
Wed 4/811:59 pm
SFO
- BOS
1 stop10h 30m
JetBlue
Thu 4/94:35 pm
BOS
- SFO
1 stop11h 23m
JetBlue
Deal found 2/1![JetBlue logo]()
$288
This Delta deal was found by Cheapflights users on 2/1. 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.
Thu 4/307:05 am
SFO
- BOS
Nonstop5h 34m
Delta
Mon 5/48:45 pm
BOS
- SFO
Nonstop6h 42m
Delta
Deal found 2/1![Delta logo]()
$267
This JetBlue deal was found by Cheapflights users on 2/2. 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.
Sun 5/109:30 pm
SFO
- BOS
Nonstop5h 38m
JetBlue
Tue 5/191:00 pm
BOS
- SFO
1 stop13h 56m
JetBlue
Deal found 2/2![JetBlue logo]()
$293
This United Airlines deal was found by Cheapflights users on 2/2. 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 7/79:16 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Tue 7/144:55 pm
BOS
- SFO
1 stop9h 01m
United Airlines
Deal found 2/2![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 2/1. 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 6/910:00 pm
SFO
- BOS
Nonstop5h 54m
Delta
Mon 6/158:55 pm
BOS
- SFO
Nonstop7h 01m
Delta
Deal found 2/1![Delta logo]()
$277
This JetBlue deal was found by Cheapflights users on 2/2. 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.
Wed 2/1812:45 pm
SFO
- BOS
Nonstop5h 38m
JetBlue
Fri 3/610:10 am
BOS
- SFO
1 stop9h 43m
JetBlue
Deal found 2/2![JetBlue logo]()
$296
This Delta deal was found by Cheapflights users on 2/1. 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.
Sun 7/1910:00 pm
SFO
- BOS
Nonstop5h 54m
Delta
Wed 7/298:55 pm
BOS
- SFO
Nonstop7h 01m
Delta
Deal found 2/1![Delta logo]()
$305
Last-minute flights from San Francisco to BostonDiscover last-minute flight deals from San Francisco to Boston. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Boston. Data last updated February 3, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Tue 2/2411:34 am
SFO
- BOS
1 stop9h 25m
Alaska Airlines
Tue 3/39:02 am
BOS
- SFO
1 stop12h 05m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$217
This Jetabroad deal was found by Cheapflights users on 2/1. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2511:34 am
SFO
- BOS
1 stop9h 25m
Hawaiian Airlines
Wed 3/49:02 am
BOS
- SFO
1 stop9h 46m
Hawaiian Airlines
Deal found 2/1![Hawaiian Airlines logo]()
$216
This United Airlines deal was found by Cheapflights users on 1/31. 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 3/311:59 pm
SFO
- BOS
1 stop7h 51m
United Airlines
Thu 3/55:45 am
BOS
- SFO
Nonstop6h 58m
United Airlines
Deal found 1/31![United Airlines logo]()
$222
This Super.com deal was found by Cheapflights users on 2/1. 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.
Tue 3/38:44 pm
SFO
- BOS
Nonstop5h 31m
JetBlue
Tue 3/107:10 am
BOS
- SFO
Nonstop7h 00m
JetBlue
Deal found 2/1![JetBlue logo]()
$223
This Delta deal was found by Cheapflights users on 2/1. 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 3/101:00 pm
SFO
- BOS
Nonstop5h 39m
Delta
Tue 3/175:20 pm
BOS
- SFO
Nonstop6h 53m
Delta
Deal found 2/1![Delta logo]()
$212
This Cheapflightsfares deal was found by Cheapflights users on 2/1. 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 3/103:25 pm
SFO
- BOS
Nonstop5h 33m
JetBlue
Tue 3/177:10 am
BOS
- SFO
Nonstop7h 00m
JetBlue
Deal found 2/1![JetBlue logo]()
$226
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/1011:35 pm
SFO
- BOS
Nonstop5h 38m
United Airlines
Tue 3/175:45 am
BOS
- SFO
Nonstop6h 58m
United Airlines
Deal found 2/1![United Airlines logo]()
$227
This Expedia deal was found by Cheapflights users on 2/1. 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 3/1110:38 pm
SFO
- BOS
1 stop10h 03m
Multiple Airlines
Wed 3/187:10 am
BOS
- SFO
Nonstop7h 00m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$214
This Expedia deal was found by Cheapflights users on 2/1. 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 3/1110:38 pm
SFO
- BOS
1 stop10h 03m
Frontier
Wed 3/1811:51 am
BOS
- SFO
1 stop10h 23m
Frontier
Deal found 2/1![Frontier logo]()
$221
This Expedia deal was found by Cheapflights users on 2/2. 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 3/2512:20 pm
SFO
- BOS
Nonstop5h 38m
Multiple Airlines
Wed 4/85:45 am
BOS
- SFO
1 stop16h 29m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$220
This Super.com deal was found by Cheapflights users on 2/2. 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.
Tue 3/3110:00 pm
SFO
- BOS
Nonstop5h 40m
JetBlue
Wed 4/89:15 pm
BOS
- SFO
Nonstop6h 41m
JetBlue
Deal found 2/2![JetBlue logo]()
$228
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 February 3, 2026.
Search for one-way flight options from San Francisco to Boston. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/24:03 pm
SFO
- BOS
2 stops22h 12m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$126
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Mon 5/410:38 pm
SFO
- BOS
1 stop10h 27m
Frontier
Deal found 2/1![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Wed 2/2510:58 pm
SFO
- BOS
2 stops22h 01m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$128
This United Airlines deal was found by Cheapflights users on 2/1. 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 2/178:25 am
SFO
- BOS
Nonstop5h 37m
United Airlines
Deal found 2/1![United Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/310:55 pm
SFO
- BOS
1 stop23h 18m
Frontier
Deal found 2/1![Frontier logo]()
$130
This WAYA deal was found by Cheapflights users on 2/1. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/810:40 pm
SFO
- BOS
1 stop10h 01m
Frontier
Deal found 2/1![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/319:59 am
SFO
- BOS
1 stop11h 00m
Hawaiian Airlines
Deal found 2/2![Hawaiian Airlines logo]()
$132
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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.
Mon 4/68:45 pm
SFO
- BOS
Nonstop5h 42m
JetBlue
Deal found 2/2![JetBlue logo]()
$133
This Delta deal was found by Cheapflights users on 2/1. 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 2/271:00 pm
SFO
- BOS
Nonstop5h 35m
Delta
Deal found 2/1![Delta logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Thu 2/2610:46 pm
SFO
- BOS
1 stop23h 27m
Frontier
Deal found 2/1![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Wed 3/410:58 pm
SFO
- BOS
2 stops14h 47m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/1610:58 pm
SFO
- BOS
1 stop23h 15m
Frontier
Deal found 2/2![Frontier logo]()
$137
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $212 (Delta) |
One-way from | $126 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $322 |
Good round-trip deal | $271 or less |
Good one-way deal | $164 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 February 3, 2026.
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
Wed 5/27
1:00 pm-9:50 pm
Nonstop5h 50m
Boston Logan Intl
Tue 6/2
8:50 pm-12:23 am
Nonstop6h 33m
$237
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 2/24
11:15 am-7:56 pm
Nonstop5h 41m
Boston Logan Intl
Thu 2/26
11:00 am-2:52 pm
Nonstop6h 52m
$247
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 2/16
7:10 am-3:49 pm
Nonstop5h 39m
Boston Logan Intl
Mon 3/9
5:20 pm-9:13 pm
Nonstop6h 53m
$260
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 6/6
10:55 pm-7:33 am
Nonstop5h 38m
Boston Logan Intl
Mon 8/10
10:25 am-2:00 pm
Nonstop6h 35m
$265
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 4/30
7:05 am-3:39 pm
Nonstop5h 34m
Boston Logan Intl
Mon 5/4
8:45 pm-12:27 am
Nonstop6h 42m
$267
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 2/19
4:10 pm-12:49 am
Nonstop5h 39m
Boston Logan Intl
Fri 2/20
12:05 pm-6:16 pm
1 stop9h 11m
$277
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 6/9
10:00 pm-6:54 am
Nonstop5h 54m
Boston Logan Intl
Mon 6/15
8:55 pm-12:56 am
Nonstop7h 01m
$277
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 4/8
11:59 pm-1:29 pm
1 stop10h 30m
Boston Logan Intl
Thu 4/9
4:35 pm-12:58 am
1 stop11h 23m
$288
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 5/10
9:30 pm-6:08 am
Nonstop5h 38m
Boston Logan Intl
Tue 5/19
1:00 pm-11:56 pm
1 stop13h 56m
$293
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 2/18
12:45 pm-9:23 pm
Nonstop5h 38m
Boston Logan Intl
Fri 3/6
10:10 am-4:53 pm
1 stop9h 43m
$296
Showing 1-10 of 24 results
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 February.
| 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 Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 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 January 30, 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 June is currently the most expensive (average of $205). 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 February 3, 2026.
It’s typically best to fly out from San Francisco to Boston in the afternoon. 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 January 31, 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. Monday 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 15% 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 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 10% 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 February 3, 2026.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian 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.
Comfort
7.8
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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
Hampton Beach
Watertown
Seekonk
Brockton
Seabrook
Cranston
Lincoln
Warwick
Smithfield
Peabody
Quincy
York Beach
Londonderry
Swansea
Old Orchard Beach
Waltham
Lowell
Chelsea
Browse thousands of different 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.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$75 | Average$191 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$129 | Average$338 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$141 | Average$372 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$157 | Average$381 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$159 | Average$277 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$205 | Average$421 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$205 | Average$435 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$237 | Average$401 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$262 | Average$407 | FlexibilityNo cancel fee | On-time71% |