Flight OddsWN4637 DEN → BNA
Southwest Airlines · Denver, CO to Nashville, TN · 25 flights observed, 2026-01-11 to 2026-03-02 · 1,013 mi
WN4637 covers more than one route in the data window — the stats below are for DEN → BNA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
96%
Median delay
-21 min
90th percentile
-3 min
Cancellation rate
4%
How often is WN4637 on time?
Across 25 flights on DEN → BNA from 2026-01-11 to 2026-03-02, WN4637 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -21 min, and the worst 10% of flights arrived -3 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 23 | 96% |
| 16-30 min | 1 | 4% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 4 | 75% | -14 min |
| 2026-02 | 18 | 100% | -18 min |
| 2026-03 | 2 | 100% | -27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 1 | 100% |
| Wed | No data | — |
| Thu | 5 | 100% |
| Fri | 5 | 100% |
| Sat | 3 | 100% |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…