Flight OddsUA279 IAD → ORD
United Airlines · Washington, DC to Chicago, IL · 50 flights observed, 2026-03-05 to 2026-04-29 · 588 mi
UA279 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
88%
Median delay
-7 min
90th percentile
+29 min
Cancellation rate
2%
How often is UA279 on time?
Across 50 flights on IAD → ORD from 2026-03-05 to 2026-04-29, UA279 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +29 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 | 43 | 88% |
| 16-30 min | 1 | 2% |
| 31-60 min | 3 | 6% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 20 | 85% | +2 min |
| 2026-04 | 29 | 90% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 88% |
| Tue | 5 | 80% |
| Wed | 5 | 100% |
| Thu | 8 | 100% |
| Fri | 8 | 75% |
| Sat | 7 | 86% |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…