$669
5:00p SFO » 7:30a LHR
United Airlines 1 stop (14h30m)
7:00a LHR » 1:35a SFO
Swiss 1 stop (18h35m)
$1,300
8:45a SFO » 8:55a LGW
Unknown Company 1 stop (24h10m)
5:20p LHR » 4:22p SFO
Delta Air Lines 1 stop (23h02m)
Average flight duration: 23h36m (flight with stopovers)