AirHint found the following cheapest return flights from Phoenix (PHX) to London (LGW) in September 2026 (see full year).
Return flights
| 16 Sep - 23 Sep | WestJet | ||
| 16 Sep - 27 Sep | Alaska Airlines | ||
| 18 Sep - 10 Oct | Porter Airlines (Canada) Ltd | ||
| 11 Sep - 23 Sep | Air Transat | ||
| 20 Sep - 10 Oct | Aeromexico |
Also check the deals for one-way flights from Phoenix to London in September.
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