Cheapest return flights from Philadelphia to Barcelona in September from $577

AirHint found the following cheapest return flights from Philadelphia (PHL) to Barcelona (BCN) in September 2025 (see full year).

Return flights

24 Sep - 30 Sep TAP
18 Sep - 23 Sep TAP
02 Sep - 09 Sep TAP
02 Sep - 14 Sep TAP
04 Sep - 09 Sep TAP
24 Sep - 01 Oct United
30 Sep - 07 Oct United
24 Sep - 30 Sep American Airlines direct
09 Sep - 16 Sep United
02 Sep - 09 Sep American Airlines direct
18 Sep - 25 Sep United
18 Sep - 23 Sep American Airlines direct
27 Sep - 04 Oct United

Also check the deals for one-way flights from Philadelphia to Barcelona in September.

Skyscanner

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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