Cheapest return flights from Chicago to Vienna in September from 500€

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

Return flights

24 Sep - 22 Oct Turkish Airlines
06 Sep - 19 Sep Spirit Airlines
25 Sep - 07 Oct Frontier Airlines
23 Sep - 29 Sep Spirit Airlines
28 Sep - 12 Oct Turkish Airlines
19 Sep - 24 Sep Icelandair
18 Sep - 02 Oct Spirit Airlines
25 Sep - 02 Oct Frontier Airlines
28 Sep - 18 Oct Frontier Airlines
11 Sep - 23 Sep Spirit Airlines
25 Sep - 28 Sep Frontier Airlines
01 Sep - 27 Sep Air Serbia
25 Sep - 07 Oct United direct
25 Sep - 02 Oct Austrian Airlines direct
28 Sep - 18 Oct Austrian Airlines direct
28 Sep - 12 Oct Austrian Airlines direct
23 Sep - 29 Sep United direct
01 Sep - 27 Sep 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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