Denver, CO → St. Louis, MO flight delays
DEN → STL · all airlines · 289 flights · April 2026 · source: US BTS
This route is delayed
20%of the time, by +48 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
80%
Delayed 3h+
0%
Cancelled
0%
Avg when late
+48m
Best & worst day to fly
Most on-time
Tuesday
delayed 6%
Worst
Monday
delayed 25%
Which airline is most punctual on DEN → STL?
Uniteddelayed 20%
Southwestdelayed 20%
Frequently asked
How often is the Denver, CO to St. Louis, MO flight delayed?
About 20% of DEN → STL flights arrive late (15+ minutes), by an average of 48 minutes when they do, based on 289 flights in April 2026.
Which airline is most punctual on DEN → STL?
United, delayed 20% of the time — the best of the 2 airlines flying this route.
What is the best day to fly DEN → STL?
Tuesday is the most on-time (delayed 6%), while Monday is the worst (delayed 25%).
Airport overviews