AirHint found the following cheapest return flights from Houston (IAH) to Barcelona (BCN) in October 2025 (see full year).

Return flights

22 Oct - 29 Oct	Spirit Airlines
20 Oct - 03 Nov	Spirit Airlines
23 Oct - 08 Nov	Spirit Airlines
09 Oct - 16 Oct	Spirit Airlines
17 Oct - 03 Nov	Spirit Airlines
02 Oct - 13 Oct	Spirit Airlines
19 Oct - 26 Oct	Spirit Airlines
13 Oct - 27 Oct	Spirit Airlines
11 Oct - 26 Oct	Spirit Airlines
08 Oct - 22 Oct	Air Canada
10 Oct - 17 Oct	United

Also check the deals for one-way flights from Houston to Barcelona in October.

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 Houston to Barcelona in October from $453

Return flights