Flight OddsUA1778 IAD → ORD
United Airlines · Washington, DC to Chicago, IL · 55 flights observed, 2026-04-30 to 2026-06-24 · 588 mi
UA1778 covers more than one route in the data window — the stats below are for IAD → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
96%
Median delay
-11 min
90th percentile
+4 min
Cancellation rate
0%
How often is UA1778 on time?
Across 55 flights on IAD → ORD from 2026-04-30 to 2026-06-24, UA1778 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +4 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 | 53 | 96% |
| 16-30 min | 1 | 2% |
| 31-60 min | 1 | 2% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 1 | 100% | -15 min |
| 2026-05 | 30 | 97% | -10 min |
| 2026-06 | 24 | 96% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 100% |
| Tue | 8 | 100% |
| Wed | 8 | 100% |
| Thu | 8 | 100% |
| Fri | 8 | 75% |
| Sat | 8 | 100% |
| Sun | 7 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…