AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Istanbul (IST) in May 2026 (see full year).

Return flights

06 May - 13 May	Frontier Airlines
14 May - 02 Jun	Frontier Airlines
03 May - 09 May	Frontier Airlines
03 May - 11 May	Frontier Airlines
14 May - 26 May	Frontier Airlines
15 May - 26 May	Spirit Airlines
15 May - 29 May	Spirit Airlines
15 May - 30 May	Spirit Airlines
15 May - 25 May	Spirit Airlines
18 May - 25 May	Air Canada
26 May - 07 Jun	Spirit Airlines
09 May - 23 May	KLM
01 May - 05 Jun	Turkish Airlines	direct
25 May - 07 Jun	Spirit Airlines
11 May - 02 Jun	Delta
14 May - 02 Jun	Turkish Airlines	direct

Also check the deals for one-way flights from Dallas-Fort Worth 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 Dallas-Fort Worth to Istanbul in May from 602€

Return flights