AirHint found the following cheapest return flights from Houston (HOU) to Barcelona (BCN) in May 2026 (see full year).

Return flights

07 May - 15 May	Turkish Airlines
12 May - 20 May	Turkish Airlines
04 May - 12 May	Turkish Airlines
05 May - 13 May	Turkish Airlines
06 May - 14 May	Turkish Airlines
11 May - 19 May	Turkish Airlines
13 May - 21 May	Turkish Airlines
14 May - 22 May	Turkish Airlines
18 May - 26 May	Air Canada
19 May - 27 May	Air Canada
26 May - 03 Jun	Air Canada
27 May - 04 Jun	Air Canada
25 May - 02 Jun	Air Canada
31 May - 08 Jun	British Airways
24 May - 01 Jun	Air Canada
28 May - 05 Jun	Air Canada
29 May - 06 Jun	Air Canada
30 May - 07 Jun	British Airways
31 May - 20 Jun	Air Canada

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

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 May from $661

Return flights