Boston to San Francisco

BOSSFO

Fly from Boston to San Francisco starting at USD 124 with Southwest Airlines.Best fare available on Sep 9, 2026.Limited seats. Better plans. Book before it's gone.

Boston to San Francisco cheapest flights this week

5 Sept
Frontier Airlines
12:45BOS
22:03SFO
1 StopUSD 232VIEW DEAL
6 Sept
Frontier Airlines
12:45BOS
22:26SFO
1 StopUSD 238VIEW DEAL
7 Sept
American Airlines
06:00BOS
14:32SFO
1 StopUSD 193VIEW DEAL
7 Sept
JetBlue Airways
08:00BOS
14:34SFO
DirectUSD 422VIEW DEAL
8 Sept
United Airlines
14:00BOS
23:18SFO
1 StopUSD 489VIEW DEAL
9 Sept
Southwest Airlines
15:20BOS
01:10SFO
1 StopUSD 124VIEW DEAL
9 Sept
Frontier Airlines
12:54BOS
23:08SFO
1 StopUSD 238VIEW DEAL
13 Sept
JetBlue Airways
06:50BOS
13:13SFO
DirectUSD 248VIEW DEAL
15 Sept
JetBlue Airways
05:15BOS
13:39SFO
1 StopUSD 128VIEW DEAL
15 Sept
Frontier Airlines
12:52BOS
23:08SFO
1 StopUSD 180VIEW DEAL

Boston to San Francisco monthly flight fare trend

Sep
from USD 124
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

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