Cheap flights from Boston to San Francisco – Compare and Save

BOS — SFO
3 May — 10 May1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights from Boston to San Francisco
Explore the most affordable flight options available from Boston to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 April 2026.

Sat 25/407:40
BOS
-
SFO
Nonstop6h 49m
Delta
Sat 2/507:05
SFO
-
BOS
Nonstop5h 34m
Delta
Deal found 1/4₹ 25,670
Sat 25/420:19
BOS
-
SFO
Nonstop6h 40m
JetBlue
Sat 2/520:25
SFO
-
BOS
Nonstop5h 42m
JetBlue
Deal found 2/4₹ 25,763
Sat 25/420:19
BOS
-
SFO
Nonstop6h 40m
JetBlue
Sat 2/520:25
SFO
-
BOS
Nonstop5h 42m
JetBlue
Deal found 1/4₹ 25,856
Sat 25/421:20
BOS
-
SFO
Nonstop6h 39m
Delta
Sat 2/513:00
SFO
-
BOS
Nonstop5h 41m
Delta
Deal found 2/4₹ 25,948
Tue 28/415:28
BOS
-
SFO
1 stop8h 56m
United Airlines
Tue 5/512:30
SFO
-
BOS
Nonstop5h 57m
United Airlines
Deal found 1/4₹ 26,226
Tue 18/810:00
BOS
-
SFO
Nonstop6h 57m
Delta
Mon 24/822:00
SFO
-
BOS
Nonstop5h 54m
Delta
Deal found 2/4₹ 26,597
Mon 20/406:00
BOS
-
SFO
1 stop14h 34m
Frontier
Mon 27/422:38
SFO
-
BOS
1 stop10h 19m
Frontier
Deal found 30/3₹ 26,782
Sun 24/506:00
BOS
-
SFO
1 stop9h 41m
Alaska Airlines
Wed 27/516:44
SFO
-
BOS
1 stop10h 00m
Alaska Airlines
Deal found 30/3₹ 27,060
Sat 25/420:19
BOS
-
SFO
Nonstop6h 40m
JetBlue
Tue 28/415:10
SFO
-
BOS
Nonstop5h 48m
JetBlue
Deal found 29/3₹ 27,338
Thu 30/420:45
BOS
-
SFO
Nonstop6h 42m
Delta
Tue 5/522:30
SFO
-
BOS
Nonstop5h 55m
Delta
Deal found 31/3₹ 27,524
Tue 28/406:10
BOS
-
SFO
1 stop14h 11m
Delta
Wed 6/522:30
SFO
-
BOS
Nonstop5h 55m
Delta
Deal found 2/4₹ 27,802
Tue 28/411:10
BOS
-
SFO
Nonstop6h 44m
United Airlines
Tue 5/510:17
SFO
-
BOS
Nonstop5h 50m
United Airlines
Deal found 3/4₹ 27,895

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