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	Scandinavian Airlines
09 Mar - 13 Mar	WestJet
03 Mar - 10 Mar	British Airways
06 Mar - 16 Mar	WestJet
12 Mar - 21 Mar	Finnair
05 Mar - 15 Mar	jetBlue
20 Mar - 11 Apr	jetBlue
16 Mar - 11 Apr	jetBlue
18 Mar - 09 Apr	jetBlue
25 Mar - 12 Apr	WestJet
10 Mar - 04 Apr	jetBlue
16 Mar - 20 Mar	jetBlue
07 Mar - 28 Mar	Air Canada
25 Mar - 07 Apr	Air Canada
10 Mar - 04 Apr	British Airways	direct
16 Mar - 11 Apr	British Airways	direct
06 Mar - 28 Mar	Air Canada
27 Mar - 18 Apr	jetBlue
25 Mar - 07 Apr	British Airways	direct
23 Mar - 30 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 $611

Return flights