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

Return flights

12 Oct - 22 Oct	Air Canada
14 Oct - 08 Nov	Spirit Airlines
01 Oct - 22 Oct	Air France
24 Oct - 08 Nov	Spirit Airlines
29 Oct - 22 Nov	Air Canada
22 Oct - 15 Nov	Air Canada
07 Oct - 01 Nov	Spirit Airlines
20 Oct - 15 Nov	Air Canada
25 Oct - 15 Nov	Air Canada
24 Oct - 15 Nov	Air Canada
19 Oct - 26 Oct	Air Canada
02 Oct - 08 Oct	Lufthansa
11 Oct - 01 Nov	Spirit Airlines
23 Oct - 03 Nov	Spirit Airlines
11 Oct - 16 Oct	Turkish Airlines
08 Oct - 12 Oct	Air France
09 Oct - 15 Oct	British Airways
19 Oct - 25 Oct	Spirit Airlines

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 $534

Return flights