Cheapest return flights from Chicago to Vienna in September from 499€

AirHint found the following cheapest return flights from Chicago (ORD) to Vienna (VIE) in September 2025 (see full year).

Return flights

08 Sep - 15 Sep Turkish Airlines
24 Sep - 22 Oct Spirit Airlines
16 Sep - 30 Sep Turkish Airlines
25 Sep - 06 Oct Turkish Airlines
19 Sep - 24 Sep Icelandair
04 Sep - 11 Sep Spirit Airlines
02 Sep - 09 Sep Turkish Airlines
28 Sep - 29 Sep Spirit Airlines
14 Sep - 25 Sep Aer Lingus
02 Sep - 09 Sep United direct
04 Sep - 11 Sep Austrian Airlines direct
08 Sep - 15 Sep Austrian Airlines direct
25 Sep - 06 Oct Austrian Airlines direct

Also check the deals for one-way flights from Chicago to Vienna in September.

Skyscanner

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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