Cheapest return flights from Philadelphia to London in March from $635

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

Return flights

04 Mar - 11 Mar Air Canada
04 Mar - 11 Mar Iberia direct
03 Mar - 08 Mar Iberia direct
17 Mar - 31 Mar jetBlue
17 Mar - 24 Mar jetBlue
27 Mar - 11 Apr jetBlue
27 Mar - 03 Apr jetBlue
17 Mar - 31 Mar British Airways direct
17 Mar - 24 Mar British Airways direct
18 Mar - 24 Mar British Airways direct
27 Mar - 04 Apr jetBlue
06 Mar - 13 Mar British Airways direct
22 Mar - 08 Apr British Airways direct
17 Mar - 23 Mar jetBlue
27 Mar - 03 Apr British Airways direct
27 Mar - 04 Apr British Airways direct
27 Mar - 11 Apr British Airways direct
29 Mar - 05 Apr British Airways

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

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