AirHint found the following cheapest return flights from Luxemburg (LUX) to Istanbul (IST) in September 2025 (see full year).

Return flights

29 Sep - 01 Oct	Ryanair
22 Sep - 25 Sep	Ryanair
22 Sep - 01 Oct	Ryanair
26 Sep - 30 Sep	Ryanair
23 Sep - 03 Oct	Ryanair
22 Sep - 30 Sep	Ryanair
17 Sep - 21 Sep	Ryanair
10 Sep - 20 Oct	Ryanair
10 Sep - 21 Oct	Ryanair
01 Sep - 10 Sep	Ryanair
11 Sep - 20 Oct	Ryanair
12 Sep - 19 Sep	Ryanair
11 Sep - 18 Sep	Ryanair
05 Sep - 16 Sep	Ryanair
22 Sep - 26 Sep	Ryanair
22 Sep - 24 Sep	Ryanair
25 Sep - 02 Oct	Lufthansa
26 Sep - 01 Oct	Lufthansa
25 Sep - 02 Oct	Turkish Airlines	direct
10 Sep - 21 Oct	Turkish Airlines	direct

Also check the deals for one-way flights from Luxemburg to Istanbul in September.

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 Luxemburg to Istanbul in September from 151€

Return flights