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

Return flights

10 Mar - 17 Mar	United
24 Mar - 31 Mar	Air Canada
04 Mar - 11 Mar	United
20 Mar - 27 Mar	United
04 Mar - 15 Mar	British Airways
04 Mar - 14 Mar	British Airways
06 Mar - 13 Mar	British Airways
07 Mar - 14 Mar	Iberia
18 Mar - 11 Apr	Air Canada
06 Mar - 14 Mar	British Airways
30 Mar - 06 Apr	United
06 Mar - 15 Mar	Lufthansa

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

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 March from 487€

Return flights