AirHint found the following cheapest return flights from Houston (IAH) to Bucharest (OTP) in May 2026 (see full year).

Return flights

04 May - 12 May	Air Canada
06 May - 13 May	British Airways
03 May - 11 May	Lufthansa
02 May - 10 May	Lufthansa
01 May - 09 May	Air Canada
25 May - 02 Jun	Air Canada
27 May - 04 Jun	Air Canada
26 May - 03 Jun	Air Canada
31 May - 08 Jun	Air Canada
24 May - 01 Jun	Air Canada
26 May - 02 Jun	British Airways
27 May - 03 Jun	British Airways
28 May - 04 Jun	WestJet
25 May - 01 Jun	British Airways
28 May - 05 Jun	Air Canada

Also check the deals for one-way flights from Houston to Bucharest 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 Bucharest in May from 463€

Return flights