AirHint found the following cheapest return flights from Houston (HOU) to Barcelona (BCN) in May 2026 (see full year).
Return flights
| 06 May - 20 May | Air Canada | ||
| 03 May - 10 May | United | ||
| 07 May - 12 May | United | ||
| 25 May - 29 May | Air France |
Also check the deals for one-way flights from Houston to Barcelona in May.
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