Flight OddsUA3540 IAD → PIT
United Airlines · Washington, DC to Pittsburgh, PA · 334 flights observed, 2025-07-01 to 2026-06-30 · 182 mi
UA3540 covers more than one route in the data window — the stats below are for IAD → PIT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
-8 min
90th percentile
+42 min
Cancellation rate
1%
How often is UA3540 on time?
Across 334 flights on IAD → PIT from 2025-07-01 to 2026-06-30, UA3540 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +42 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 266 | 81% |
| 16-30 min | 21 | 6% |
| 31-60 min | 18 | 5% |
| 61-120 min | 13 | 4% |
| 2+ hrs | 12 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 79% | +41 min |
| 2025-08 | 31 | 74% | +10 min |
| 2025-09 | 30 | 87% | 0 min |
| 2025-10 | 31 | 84% | +0 min |
| 2025-12 | 30 | 73% | +9 min |
| 2026-01 | 29 | 90% | -9 min |
| 2026-02 | 28 | 89% | -6 min |
| 2026-03 | 31 | 68% | +17 min |
| 2026-04 | 30 | 93% | -9 min |
| 2026-05 | 31 | 81% | +22 min |
| 2026-06 | 30 | 70% | +18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 45 | 84% |
| Tue | 48 | 88% |
| Wed | 48 | 77% |
| Thu | 48 | 79% |
| Fri | 48 | 79% |
| Sat | 47 | 83% |
| Sun | 46 | 74% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…