Flight OddsWN2143 STL → DEN
Southwest Airlines · St. Louis, MO to Denver, CO · 44 flights observed, 2026-01-06 to 2026-03-04 · 770 mi
WN2143 covers more than one route in the data window — the stats below are for STL → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
93%
Median delay
-15 min
90th percentile
+0 min
Cancellation rate
0%
How often is WN2143 on time?
Across 44 flights on STL → DEN from 2026-01-06 to 2026-03-04, WN2143 arrived within 15 minutes of schedule 93% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +0 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 41 | 93% |
| 16-30 min | 2 | 5% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 21 | 86% | -9 min |
| 2026-02 | 20 | 100% | -15 min |
| 2026-03 | 3 | 100% | -17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 8 | 100% |
| Wed | 9 | 100% |
| Thu | 5 | 100% |
| Fri | 6 | 100% |
| Sat | 8 | 75% |
| Sun | 4 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…