Cheapest return flights from Philadelphia to London in April from $549

Best time to book flights for Philadelphia (PHL) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from Philadelphia (PHL) to London (LGW) in April 2025 (see full year).

Return flights

01 Apr - 07 Apr Frontier Airlines
27 Apr - 04 May Spirit Airlines
27 Apr - 06 May Spirit Airlines
04 Apr - 08 Apr Frontier Airlines
03 Apr - 06 Apr Frontier Airlines
23 Apr - 14 May Spirit Airlines
23 Apr - 15 May Spirit Airlines
25 Apr - 27 Apr Spirit Airlines
09 Apr - 16 Apr Spirit Airlines
04 Apr - 12 Apr Frontier Airlines
11 Apr - 17 Apr Spirit Airlines
09 Apr - 20 Apr Spirit Airlines
08 Apr - 15 Apr Icelandair
11 Apr - 21 Apr Spirit Airlines

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

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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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