AirHint found the following cheapest return flights from Los Angeles (LAX) to London (LTN) in September 2026 (see full year).

Return flights

22 Sep - 18 Oct	Lufthansa
08 Sep - 12 Sep	Air Canada
09 Sep - 16 Sep	Air Canada
06 Sep - 06 Oct	Norse Atlantic Airways
22 Sep - 10 Oct	Lufthansa
13 Sep - 08 Oct	Air Canada
02 Sep - 13 Sep	FrenchBee
02 Sep - 12 Sep	Air Canada
10 Sep - 24 Sep	Norse Atlantic Airways
08 Sep - 14 Sep	Norse Atlantic Airways
16 Sep - 28 Sep	Lufthansa
16 Sep - 21 Sep	Lufthansa
11 Sep - 25 Sep	LOT
10 Sep - 21 Sep	Norse Atlantic Airways
30 Sep - 11 Oct	Air Canada
24 Sep - 08 Oct	Aer Lingus
26 Sep - 10 Oct	Air Canada

Also check the deals for one-way flights from Los Angeles to London in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Los Angeles to London in September from $738

Return flights