Cheapest one-way DEN–IST flights, May

AirHint found the following cheapest one-way flights from Denver (DEN) to Istanbul (IST) in May 2026 (see full year).

One-Way flights

11 May Lufthansa
07 May Sun Country Airlines
08 May Frontier Airlines
09 May Frontier Airlines
24 May Frontier Airlines
31 May Frontier Airlines
12 May Frontier Airlines
18 May Lufthansa
15 May Lufthansa
14 May Lufthansa

Also check the deals for return flights from Denver to Istanbul in May.

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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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