$400-$500 Nonstop Flights US Cities to London!

Great sale to London - NONSTOP - starting in the $400s from several US cities! 

Travel: September 2017 through May 2018, including Thanksgiving (excludes Christmas/NYE)
Airline: British Airways
Booking: Search Google Flights for cheapest dates, then compare on Momondo

Departure Cities/Fare:
Atlanta (ATL) - $597
Boston (BOS) - $428
Chicago (ORD) - $568
Denver (DEN) - $483
Fort Lauderdale (FLL) - $505
Los Angeles (LAX) - $528
Miami (MIA) - $542
Oakland (OAK) - $465
New York City (EWR) - $496
New York City (JFK) - $460
San Francisco (SFO) - $551
San Jose (SJC) - $551
Seattle (SEA) - $554