Southwest Airlines · Philadelphia, PA to Denver, CO · 45 flights observed, 2025-11-02 to 2026-01-05 · 1,558 mi
WN4036 covers more than one route in the data window — the stats below are for PHL → DEN, the one it has flown most recently. The others are linked under “Other routes”.
How often is WN4036 on time?
Across 45 flights on PHL → DEN from 2025-11-02 to 2026-01-05, WN4036 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +13 min, and the worst 10% of flights arrived +69 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 23 | 52% |
| 16-30 min | 9 | 20% |
| 31-60 min | 6 | 14% |
| 61-120 min | 5 | 11% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 22 | 64% | +15 min |
| 2025-12 | 20 | 35% | +39 min |
| 2026-01 | 2 | 100% | +7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 71% |
| Tue | 6 | 50% |
| Wed | 8 | 38% |
| Thu | 8 | 50% |
| Fri | 6 | 50% |
| Sat | 3 | 33% |
| Sun | 6 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…