Cheapest one-way flights from St. Louis to Chicago in August from 74€

AirHint found the following cheapest one-way flights from St. Louis (STL) to Chicago (MDW) in August 2025 (see full year).

One-Way flights

23 Aug Frontier Airlines
22 Aug Frontier Airlines
24 Aug Frontier Airlines
21 Aug Frontier Airlines
28 Aug Southwest Airlines direct
27 Aug Frontier Airlines
29 Aug Southwest Airlines direct
18 Aug Frontier Airlines
19 Aug Frontier Airlines
27 Aug Southwest Airlines direct

Also check the deals for return flights from St. Louis to Chicago in August.

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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