Route Price Intelligence
Cheap Flights From Chicago to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$204
Great Deal
Under $117
Typical Range
$117 – $353
Lowest We've Seen
$105
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$117
Feb
$117
Mar
$357
Apr
$204
May
$204
Jun
$232
Jul
$204
Aug
$190
Sep
$117
Oct
$117
Nov
$203
Dec
$117
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 March at around $357. For the best deals, consider flying in October, December, 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: November13,075 fares analyzedTypical low: $337
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