Cheapest return flights from Philadelphia to London in April from 636€

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

Return flights

19 Apr - 07 May Spirit Airlines
29 Apr - 13 May Frontier Airlines
16 Apr - 07 May Spirit Airlines
13 Apr - 30 Apr jetBlue
14 Apr - 30 Apr jetBlue
14 Apr - 21 Apr jetBlue
14 Apr - 07 May jetBlue
13 Apr - 21 May jetBlue
13 Apr - 22 May jetBlue
29 Apr - 13 May Finnair direct
30 Apr - 06 May Iberia
14 Apr - 31 May jetBlue
14 Apr - 23 May jetBlue
18 Apr - 26 Apr Frontier Airlines
11 Apr - 30 Apr jetBlue
14 Apr - 22 Apr Aer Lingus
14 Apr - 23 Apr Aer Lingus
18 Apr - 19 Apr Frontier Airlines
16 Apr - 27 Apr Frontier Airlines
12 Apr - 16 Apr jetBlue

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

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