Cheapest return flights from Philadelphia to London in April from 625€

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

Return flights

09 Apr - 13 Apr Aer Lingus
23 Apr - 30 Apr Air Canada
17 Apr - 23 Apr Spirit Airlines
02 Apr - 06 Apr Lufthansa
14 Apr - 06 May Frontier Airlines
01 Apr - 08 Apr Frontier Airlines
30 Apr - 10 May Frontier Airlines
01 Apr - 05 Apr Aer Lingus
02 Apr - 12 Apr Frontier Airlines
22 Apr - 20 May Aer Lingus
05 Apr - 12 Apr Aer Lingus
03 Apr - 06 Apr Aer Lingus
06 Apr - 12 Apr Frontier Airlines
23 Apr - 20 May TAP

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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