Cheap flights from Saint Louis to Chicago
From 270 USD — compare hundreds of airlines
Direct flightsCheapest: 2026-07 · 96 US$
Prices by date
119 US$
01/07
108 US$
02/07
96 US$
03/07
113 US$
04/07
113 US$
05/07
113 US$
06/07
113 US$
07/07
113 US$
08/07
129 US$
09/07
Airlines on this route
FAQ
What's the cheapest month to fly Saint Louis to Chicago?
Usually 2026-07, from 96 USD.
Are there direct flights from Saint Louis to Chicago?
We show both direct and connecting options — filter to compare.