Route Price Intelligence
Cheap Flights From Chicago to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$232
Great Deal
Under $117
Typical Range
$117 – $353
Lowest We've Seen
$105
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$183
Feb
$232
Mar
$357
Apr
$378
May
—
Jun
—
Jul
$424
Aug
$190
Sep
$117
Oct
$117
Nov
$232
Dec
$242
Cheapest Average Expensive
Best Time to Fly from Chicago to Saint Louis
The cheapest time to fly from Chicago to Saint Louis is typically October, when fares average around $117. The most expensive month tends to be July at around $424. For the best deals, consider flying in October, September, January.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: July45,163 fares analyzedTypical low: $315