Route Price Intelligence
Cheap Flights From St. Louis to Denver
Live pricing benchmarks, monthly patterns, and historical lows for this route.
⭐ Great DealFound 3d ago
$56Frontier flash sale continues! St. Louis to Denver nonstop for $56 - over 70% off! Book immediately as availability is extremely limited.
✓ 4 date combinations found at this price
Search Google FlightsTypical Price
$273
Deals From
$198
Usually Costs
$198 – $327
Lowest We've Seen
$56
Based on 8,385 price pointshigh confidence
Monthly Price Guide
Jan
$194
Feb
$169
Mar
$178
Apr
$188
May
$291
Jun
$325
Jul
$327
Aug
$325
Sep
$327
Oct
$327
Nov
$327
Dec
$338
Cheapest Average Expensive
Best Time to Fly from St. Louis to Denver
The cheapest time to fly from St. Louis to Denver is typically February, when fares average around $169. The most expensive month tends to be December at around $338. For the best deals, consider flying in February, March, April.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $5759 price checksWorst: $133