Cheapest return PHX–IST flights, May

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

Return flights

31 May - 09 Jun Delta
26 May - 02 Jun Delta
02 May - 16 May Frontier Airlines
05 May - 12 May KLM
05 May - 14 May KLM
16 May - 26 May Frontier Airlines
02 May - 09 May Frontier Airlines
01 May - 08 May Alaska Airlines

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

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