Boston to San Francisco
BOSSFO
Fly from Boston to San Francisco starting at USD 93 with Frontier Airlines.
Best fare available on Oct 3, 2026.
Limited seats. Better plans. Book before it's gone.
Boston to San Francisco cheapest flights this week
Boston to San Francisco monthly flight fare trend
Sep
from USD 325
Oct
from USD 93
Nov
from USD 130
Dec
No flights
Jan
No flights
Feb
No flights
Airport Details
Origin
Boston
Logan International Airport (BOS)
Boston, BOS
Zone
New York
Elev
20 ft
Destination
San Francisco
San Francisco International Airport (SFO)
San Francisco, SFO
Zone
Los Angeles
Elev
13 ft
Flights from Boston
Flights from Boston to AtlantaFlights from Boston to AustinFlights from Boston to CharlotteFlights from Boston to DenverFlights from Boston to DallasFlights from Boston to DetroitFlights from Boston to NewarkFlights from Boston to Fort LauderdaleFlights from Boston to HonoluluFlights from Boston to Washington
