Cheapest return PHL–LIS flights, July

AirHint found the following cheapest return flights from Philadelphia (PHL) to Lisbon (LIS) in July 2026 (see full year).

Return flights

06 Jul - 12 Jul Frontier Airlines
06 Jul - 14 Jul Frontier Airlines
04 Jul - 11 Jul Spirit Airlines
07 Jul - 14 Jul Frontier Airlines
04 Jul - 08 Jul Frontier Airlines
31 Jul - 08 Aug Spirit Airlines
25 Jul - 08 Aug Frontier Airlines
02 Jul - 06 Jul Frontier Airlines
31 Jul - 09 Aug Frontier Airlines
24 Jul - 02 Aug Frontier Airlines
04 Jul - 11 Jul British Airways direct
25 Jul - 08 Aug British Airways direct
31 Jul - 09 Aug British Airways direct
02 Jul - 06 Jul Finnair direct

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

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