Route Price Intelligence
Cheap Flights From Chicago to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$317
Deals From
$206
Usually Costs
$206 – $317
Lowest We've Seen
$89
Based on 8,330 price pointshigh confidence
Monthly Price Guide
Jan
$317
Feb
$255
Mar
$222
Apr
$174
May
$259
Jun
$317
Jul
$315
Aug
$315
Sep
$316
Oct
$317
Nov
$317
Dec
$317
Cheapest Average Expensive
Best Time to Fly from Chicago to Saint Louis
The cheapest time to fly from Chicago to Saint Louis is typically April, when fares average around $174. The most expensive month tends to be June at around $317. For the best deals, consider flying in April, March, February.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $8964 price checksWorst: $166