AirHint found the following cheapest return flights from Phoenix (PHX) to London (LGW) in May 2026 (see full year).

Return flights

18 May - 01 Jun	Air Canada
04 May - 08 Jun	Air Canada
22 May - 01 Jun	WestJet
12 May - 18 May	Air Canada
19 May - 01 Jun	Air Canada
20 May - 01 Jun	Air Canada
31 May - 10 Jun	Air Canada
17 May - 01 Jun	Air Canada
01 May - 08 May	Air Canada
16 May - 01 Jun	Sun Country Airlines
20 May - 03 Jun	Air Canada
01 May - 05 May	SWISS
09 May - 20 Jun	Air Canada
09 May - 12 May	Air Canada
21 May - 30 May	WestJet
16 May - 24 May	Air Canada
16 May - 31 May	Alaska Airlines
01 May - 15 May	Alaska Airlines
15 May - 31 May	Alaska Airlines
17 May - 31 May	Alaska Airlines

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

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 Phoenix to London in May from $705

Return flights