Flight OddsUA431 IAD → DEN
United Airlines · Washington, DC to Denver, CO · 56 flights observed, 2026-03-05 to 2026-04-29 · 1,452 mi
UA431 covers more than one route in the data window — the stats below are for IAD → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-17 min
90th percentile
+31 min
Cancellation rate
0%
How often is UA431 on time?
Across 56 flights on IAD → DEN from 2026-03-05 to 2026-04-29, UA431 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +31 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 | 46 | 84% |
| 16-30 min | 3 | 5% |
| 31-60 min | 3 | 5% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 27 | 81% | -6 min |
| 2026-04 | 28 | 86% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 88% |
| Tue | 8 | 100% |
| Wed | 8 | 100% |
| Thu | 7 | 57% |
| Fri | 8 | 88% |
| Sat | 8 | 75% |
| Sun | 8 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…