London is on sale again from San Francisco and San Jose with all three major alliances for departures in August and later months with United and Virgin Atlantic nonstop flights SFO to LHR and British Airways nonstop flights from SJC to LHR pricing around $423 round trip. There are even lower sub-$400 fares if you are open to booking a two-stop itinerary.
United Airlines San Francisco SFO – London LHR – SFO nonstop flights
$422.23 round trip Mon Aug 12 – Wed Aug 21
