Cheapest return flights from Phoenix to London in September from $717

Best time to book flights for Phoenix (PHX) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from Phoenix (PHX) to London (LGW) in September 2025 (see full year).

Return flights

22 Sep - 30 Sep British Airways
23 Sep - 30 Sep British Airways
24 Sep - 07 Oct British Airways
25 Sep - 03 Oct Sun Country Airlines
15 Sep - 27 Sep Spirit Airlines
25 Sep - 02 Oct Sun Country Airlines
15 Sep - 01 Oct Spirit Airlines
25 Sep - 04 Oct Sun Country Airlines
21 Sep - 29 Sep Southern Airways Express
23 Sep - 21 Oct British Airways
26 Sep - 06 Oct British Airways
09 Sep - 02 Oct Finnair

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

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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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