Flights from Boston to San Francisco from $ 197*
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1 Passenger, Economy
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today
today
Featured daily fares for flights from Boston (BOS) to San Francisco (SFO)
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More United deals on Boston (BOS) to San Francisco (SFO) flights
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$
Boston (BOS)to
San Francisco (SFO)
01/27/26 - 02/03/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
Boston (BOS)to
San Francisco (SFO)
02/03/26 - 02/10/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
Boston (BOS)to
San Francisco (SFO)
01/14/26 - 01/21/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
Boston (BOS)to
San Francisco (SFO)
01/20/26 - 01/27/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
Boston (BOS)to
San Francisco (SFO)
02/04/26 - 02/11/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
Boston (BOS)to
San Francisco (SFO)
01/13/26 - 01/20/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
Boston (BOS)to
San Francisco (SFO)
01/21/26 - 01/28/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
Boston (BOS)to
San Francisco (SFO)
01/28/26 - 02/04/26
Roundtrip
Economy
from
$Â 197
Viewed: 21 hours ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
