Cheapest return flights from Chicago to Istanbul in September from 511€
AirHint found the following cheapest return flights from Chicago (ORD) to Istanbul (IST)
in September 2025 (see full year ).
Return flights
09 Sep
- 16 Sep
Icelandair
511 €
05 Sep
- 19 Sep
Icelandair
513 €
20 Sep
- 20 Oct
Spirit Airlines
515 €
24 Sep
- 06 Oct
Spirit Airlines
518 €
01 Sep
- 05 Sep
Icelandair
519 €
16 Sep
- 03 Oct
Spirit Airlines
523 €
27 Sep
- 04 Oct
Spirit Airlines
535 €
18 Sep
- 25 Sep
Spirit Airlines
541 €
14 Sep
- 15 Oct
Frontier Airlines
544 €
22 Sep
- 30 Sep
Icelandair
546 €
17 Sep
- 24 Sep
Spirit Airlines
547 €
15 Sep
- 25 Sep
Spirit Airlines
551 €
30 Sep
- 05 Oct
Spirit Airlines
551 €
17 Sep
- 01 Oct
Spirit Airlines
551 €
06 Sep
- 20 Sep
Icelandair
555 €
15 Sep
- 30 Sep
Spirit Airlines
558 €
18 Sep
- 29 Sep
Spirit Airlines
558 €
17 Sep
- 01 Oct
Turkish Airlines
584 €
direct
01 Sep
- 01 Oct
Icelandair
619 €
20 Sep
- 20 Oct
Turkish Airlines
629 €
direct
Also check the deals for one-way flights from Chicago to Istanbul 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.
Find us on social media
Feel free to contact us with any feedback or request another flight research.
Find us on social media