Cheapest return DAL–IST flights, May

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

Return flights

05 May - 12 May KLM
05 May - 05 Jun KLM
04 May - 12 May Delta
02 May - 13 May Delta
03 May - 10 May Delta
02 May - 10 May Delta
01 May - 15 May Delta
01 May - 14 May Delta
18 May - 27 May Delta
18 May - 26 May Delta
14 May - 28 May Delta
26 May - 07 Jun Delta
25 May - 09 Jun Delta
23 May - 01 Jun Delta
25 May - 07 Jun Delta
20 May - 15 Jun Delta
22 May - 21 Jun Delta
19 May - 01 Jun KLM
30 May - 13 Jun KLM
30 May - 06 Jun KLM

Also check the deals for one-way flights from Dallas to Istanbul in May.

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