Flight OddsWN3977 MKE → DEN
Southwest Airlines · Milwaukee, WI to Denver, CO · 34 flights observed, 2025-07-01 to 2025-08-04 · 896 mi
WN3977 covers more than one route in the data window — the stats below are for MKE → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
39%
Median delay
+28 min
90th percentile
+139 min
Cancellation rate
3%
How often is WN3977 on time?
Across 34 flights on MKE → DEN from 2025-07-01 to 2025-08-04, WN3977 arrived within 15 minutes of schedule 39% of the time. The median arrival delay was +28 min, and the worst 10% of flights arrived +139 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 13 | 39% |
| 16-30 min | 4 | 12% |
| 31-60 min | 7 | 21% |
| 61-120 min | 5 | 15% |
| 2+ hrs | 4 | 12% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 38% | +44 min |
| 2025-08 | 4 | 50% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 5 | 20% |
| Wed | 5 | 40% |
| Thu | 5 | 40% |
| Fri | 4 | 25% |
| Sat | 5 | 20% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…