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

Return flights

23 Sep - 30 Sep	Spirit Airlines
24 Sep - 01 Oct	Spirit Airlines
30 Sep - 07 Oct	Spirit Airlines
02 Sep - 09 Sep	Spirit Airlines
03 Sep - 10 Sep	Spirit Airlines
09 Sep - 16 Sep	Spirit Airlines
11 Sep - 18 Sep	Spirit Airlines
10 Sep - 17 Sep	Spirit Airlines
04 Sep - 11 Sep	Spirit Airlines
25 Sep - 02 Oct	Frontier Airlines
29 Sep - 06 Oct	Spirit Airlines
01 Sep - 08 Sep	Spirit Airlines
14 Sep - 21 Sep	Frontier Airlines
18 Sep - 28 Sep	Spirit Airlines
26 Sep - 03 Oct	Spirit Airlines
28 Sep - 05 Oct	Air Canada
27 Sep - 04 Oct	Spirit Airlines

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

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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Cheapest return flights from Charlotte to Barcelona in September from $454

Return flights