Cheapest return flights from Philadelphia to Lisbon in April from 517€

Best time to book flights for Philadelphia (PHL) to Lisbon (LIS) flights at AirHint

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

Return flights

07 Apr - 17 Apr Air France
16 Apr - 23 Apr Delta
01 Apr - 08 Apr Frontier Airlines
30 Apr - 04 May Frontier Airlines
02 Apr - 09 Apr United
05 Apr - 12 Apr Delta
05 Apr - 11 Apr Frontier Airlines
26 Apr - 03 May Delta
30 Apr - 07 May United
24 Apr - 27 Apr TAP
20 Apr - 27 Apr Frontier Airlines
17 Apr - 23 Apr Frontier Airlines
07 Apr - 17 Apr Finnair direct
28 Apr - 05 May United
24 Apr - 01 May United
30 Apr - 04 May Iberia direct

Also check the deals for one-way flights from Philadelphia to Lisbon 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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