American Airlines continues low fares to Europe today with San Francisco and Los Angeles to London as low as $672 round trip with one or two stops or $700 round trip to fly British Airways nonstop flights, even during Thanksgiving week and Christmas holiday week.
Departure dates: Low fare flights are available seven days of the week during many weeks from September 1 through May 15, 2016.
The lowest fares require one or two stops. I was able to get Christmas week flights to price for online purchase from LAX at $704 and Thanksgiving week from SFO came up at $700 on British Airways nonstop flights.
American Airlines ticket for British Airways operated nonstop flights
San Francisco SFO – London LHR
$700.10 Saturday November 21 – Saturday November 28
Flight Miles: 10,734 miles SFO-LHR-SFO
This is a low fare for this route, especially considering its wide availability over the next year.
American Airlines Los Angeles LAX – London LHR
$704.60 Sunday December 20 – Wednesday December 30