Route Price Intelligence
Cheap Flights From St. Louis to Denver
Live pricing benchmarks, monthly patterns, and historical lows for this route.
🔥 Fire DealFound 2d ago
$79Unbelievable savings! Nonstop flights to Denver for just $79 roundtrip on Frontier - that's 75% off normal pricing. Rocky Mountain high at rock-bottom price!
✓ 3 date combinations found at this price
Search Google FlightsTypical Price
$273
Deals From
$213
Usually Costs
$213 – $347
Lowest We've Seen
$56
Based on 8,558 price pointshigh confidence
Monthly Price Guide
Jan
$347
Feb
$347
Mar
$232
Apr
$154
May
$179
Jun
$229
Jul
$234
Aug
$230
Sep
$347
Oct
$347
Nov
$347
Dec
$358
Cheapest Average Expensive
Best Time to Fly from St. Louis to Denver
The cheapest time to fly from St. Louis to Denver is typically April, when fares average around $154. The most expensive month tends to be December at around $358. For the best deals, consider flying in April, May, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $5785 price checksWorst: $144