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

Return flights

17 Mar - 24 Mar	Lufthansa
18 Mar - 25 Mar	Air Canada
10 Mar - 24 Mar	Air Canada
17 Mar - 24 Mar	British Airways	direct
25 Mar - 31 Mar	British Airways	direct
18 Mar - 25 Mar	British Airways	direct
30 Mar - 06 Apr	British Airways	direct
13 Mar - 27 Mar	United
13 Mar - 21 Mar	United
13 Mar - 20 Mar	British Airways	direct

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

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 March from 413€

Return flights