Route Price Intelligence
Cheap Flights From Chicago to Saint Louis
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$310
Deals From
$225
Usually Costs
$225 – $337
Lowest We've Seen
$89
Based on 3,367 price pointshigh confidence
Monthly Price Guide
Jan
$337
Feb
$337
Mar
$355
Apr
$410
May
$191
Jun
$227
Jul
$270
Aug
$230
Sep
$337
Oct
$337
Nov
$337
Dec
$337
Cheapest Average Expensive
Best Time to Fly from Chicago to Saint Louis
The cheapest time to fly from Chicago to Saint Louis is typically May, when fares average around $191. The most expensive month tends to be April at around $410. For the best deals, consider flying in May, June, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $8971 price checksWorst: $245