London Heathrow
San Francisco
1 stop
26h 50mTAP AIR PORTUGAL
London Heathrow
Los Angeles
2 stops
37h 54mMultiple Airlines
London Gatwick
Los Angeles
1 stop
26h 25mTurkish Airlines
London Heathrow
San Francisco
2 stops
25h 45mLOT
London Heathrow
San Francisco
2 stops
29h 20mIcelandair
London Heathrow
Los Angeles
1 stop
28h 20mAeromexico
London Heathrow
Las Vegas Harry Reid Intl
2 stops
21h 08mLas Vegas Harry Reid Intl
London Heathrow
2 stops
23h 22mMultiple Airlines
London Heathrow
San Francisco
1 stop
16h 55mSan Francisco
London Heathrow
1 stop
16h 50mTAP AIR PORTUGAL
London Heathrow
Los Angeles
Nonstop
11h 20mLos Angeles
London Heathrow
Nonstop
10h 30mBritish Airways
London Gatwick
Los Angeles
1 stop
26h 15mLos Angeles
London Gatwick
1 stop
18h 55mTurkish Airlines
London Heathrow
Los Angeles
1 stop
15h 35mLos Angeles
London Heathrow
Nonstop
10h 30mLufthansa
London Heathrow
San Francisco
1 stop
17h 10mSan Francisco
London Heathrow
1 stop
14h 20mScandinavian Airlines
January
£1,747
February
£1,768
March
£1,625
April
£1,812
May
£2,112
June
£2,355
July
£2,971
August
£2,617
September
£2,382
October
£2,379
November
£2,016
December
£1,906
March is currently the cheapest month to fly business class to California. At this moment in time July is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.