Cheapest return flights from Philadelphia to London in April from 573€

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

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

Return flights

02 Apr - 09 Apr jetBlue
05 Apr - 12 Apr Frontier Airlines
06 Apr - 12 Apr Frontier Airlines
29 Apr - 09 May Aer Lingus
08 Apr - 15 Apr United
15 Apr - 22 Apr United
22 Apr - 29 Apr United
29 Apr - 08 May United
21 Apr - 28 Apr Finnair
23 Apr - 28 Apr Finnair
08 Apr - 15 Apr Finnair direct
29 Apr - 08 May Finnair direct
16 Apr - 05 May Finnair
03 Apr - 10 Apr Aer Lingus
28 Apr - 05 May United
25 Apr - 02 May United
16 Apr - 05 May Iberia direct

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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