AirHint found the following cheapest return flights from Austin (AUS) to Istanbul (IST) in October 2025 (see full year).

Return flights

28 Oct - 03 Nov	Lufthansa
30 Oct - 06 Nov	Lufthansa
06 Oct - 08 Oct	Spirit Airlines
02 Oct - 08 Oct	Frontier Airlines
23 Oct - 03 Nov	British Airways
22 Oct - 27 Oct	Spirit Airlines
12 Oct - 24 Oct	Frontier Airlines
09 Oct - 12 Oct	Frontier Airlines
13 Oct - 15 Oct	Frontier Airlines
12 Oct - 15 Oct	Spirit Airlines
13 Oct - 24 Oct	Frontier Airlines
07 Oct - 10 Oct	Frontier Airlines
10 Oct - 02 Nov	Frontier Airlines
12 Oct - 14 Oct	Spirit Airlines

Also check the deals for one-way flights from Austin to Istanbul in October.

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Austin to Istanbul in October from $636

Return flights