AirHint found the following cheapest return flights from Las Vegas (LAS) to Istanbul (IST) in December 2025 (see full year).

Return flights

25 Dec - 17 Jan	British Airways
24 Dec - 17 Jan	British Airways
23 Dec - 12 Jan	KLM
17 Dec - 30 Dec	Delta
16 Dec - 10 Jan	British Airways
09 Dec - 01 Jan	WestJet
07 Dec - 01 Jan	Frontier Airlines
18 Dec - 10 Jan	WestJet
05 Dec - 02 Jan	WestJet
06 Dec - 02 Jan	Frontier Airlines
08 Dec - 02 Jan	Flair Airlines
20 Dec - 31 Dec	Frontier Airlines
18 Dec - 30 Dec	WestJet
19 Dec - 31 Dec	WestJet
19 Dec - 29 Dec	WestJet

Also check the deals for one-way flights from Las Vegas to Istanbul in December.

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 Las Vegas to Istanbul in December from $546

Return flights