Cheapest return flights from Philadelphia to Barcelona in September from $467

Best time to book flights for Philadelphia (PHL) to Barcelona (BCN) flights at AirHint

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

Return flights

24 Sep - 01 Oct United
24 Sep - 30 Sep Air Canada
10 Sep - 17 Sep Finnair direct
14 Sep - 24 Sep Finnair direct
24 Sep - 30 Sep British Airways direct
09 Sep - 16 Sep American Airlines
09 Sep - 23 Sep American Airlines
09 Sep - 16 Sep Iberia direct
19 Sep - 26 Sep United
29 Sep - 06 Oct United
18 Sep - 30 Sep Air Canada
12 Sep - 26 Sep Finnair direct

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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