AirHint found the following cheapest return flights from Istanbul (IST) to Xi'an (XIY) in September 2025 (see full year).

Return flights

19 Sep - 24 Sep	China Eastern
21 Sep - 26 Sep	Flynas
21 Sep - 14 Oct	Flynas
19 Sep - 22 Sep	China Eastern
19 Sep - 23 Sep	China Eastern
19 Sep - 25 Sep	China Eastern
19 Sep - 26 Sep	China Eastern
26 Sep - 30 Sep	flyadeal
19 Sep - 27 Sep	China Eastern
21 Sep - 14 Oct	China Eastern	direct
21 Sep - 26 Sep	China Eastern	direct

Also check the deals for one-way flights from Istanbul to Xi'an 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 Istanbul to Xi'an in September from $578

Return flights