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

Return flights

31 Jul - 07 Aug	jetBlue
30 Jul - 06 Aug	Scandinavian Airlines
27 Jul - 21 Aug	Frontier Airlines
27 Jul - 03 Aug	Frontier Airlines
29 Jul - 02 Aug	Spirit Airlines
30 Jul - 06 Aug	British Airways	direct
31 Jul - 07 Aug	British Airways	direct
27 Jul - 03 Aug	British Airways	direct
27 Jul - 21 Aug	British Airways	direct
29 Jul - 02 Aug	British Airways	direct

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

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 July from 758€

Return flights