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

Return flights

27 Oct - 11 Nov	Air Canada
22 Oct - 27 Oct	Spirit Airlines
15 Oct - 08 Nov	Spirit Airlines
22 Oct - 15 Nov	Air Canada
01 Oct - 22 Oct	Frontier Airlines
26 Oct - 15 Nov	United
25 Oct - 15 Nov	Air Canada
24 Oct - 15 Nov	Air Canada
04 Oct - 19 Nov	United
20 Oct - 23 Oct	Spirit Airlines
29 Oct - 22 Nov	British Airways
28 Oct - 22 Nov	British Airways
22 Oct - 28 Oct	Delta
06 Oct - 20 Oct	British Airways
01 Oct - 07 Oct	Air France
18 Oct - 24 Oct	Frontier Airlines
22 Oct - 26 Oct	British Airways
02 Oct - 08 Oct	British Airways
19 Oct - 26 Oct	British Airways

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 436€

Return flights