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

Return flights

07 May - 22 May	Turkish Airlines	direct
02 May - 16 May	Air France
02 May - 16 May	Turkish Airlines	direct
15 May - 26 May	Air France
26 May - 29 May	WestJet
15 May - 06 Jun	Air France
15 May - 26 May	Turkish Airlines	direct
15 May - 30 May	Turkish Airlines	direct
29 May - 25 Jun	KLM
15 May - 06 Jun	Turkish Airlines	direct
23 May - 30 May	Air Canada
29 May - 25 Jun	Turkish Airlines	direct
23 May - 30 May	Turkish Airlines	direct
26 May - 29 May	Turkish Airlines	direct

Also check the deals for one-way flights from Houston to Istanbul 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 Istanbul in May from $843

Return flights