Flight OddsUA1637 PHX → DEN
United Airlines · Phoenix, AZ to Denver, CO · 246 flights observed, 2025-07-01 to 2026-05-20 · 602 mi
UA1637 covers more than one route in the data window — the stats below are for PHX → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-6 min
90th percentile
+56 min
Cancellation rate
0%
How often is UA1637 on time?
Across 246 flights on PHX → DEN from 2025-07-01 to 2026-05-20, UA1637 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +56 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 | 192 | 78% |
| 16-30 min | 16 | 7% |
| 31-60 min | 14 | 6% |
| 61-120 min | 15 | 6% |
| 2+ hrs | 8 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 62% | +15 min |
| 2025-08 | 25 | 76% | +10 min |
| 2025-09 | 22 | 77% | +0 min |
| 2025-10 | 22 | 82% | -5 min |
| 2025-12 | 30 | 87% | +3 min |
| 2026-01 | 31 | 84% | +38 min |
| 2026-02 | 28 | 82% | +6 min |
| 2026-03 | 26 | 73% | +17 min |
| 2026-04 | 18 | 72% | +12 min |
| 2026-05 | 14 | 93% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 35 | 80% |
| Tue | 21 | 86% |
| Wed | 41 | 76% |
| Thu | 41 | 80% |
| Fri | 40 | 83% |
| Sat | 28 | 75% |
| Sun | 39 | 72% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…