Flight OddsUA1878 AUS → ORD
United Airlines · Austin, TX to Chicago, IL · 314 flights observed, 2025-07-03 to 2026-06-30 · 977 mi
UA1878 covers more than one route in the data window — the stats below are for AUS → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-7 min
90th percentile
+20 min
Cancellation rate
2%
How often is UA1878 on time?
Across 314 flights on AUS → ORD from 2025-07-03 to 2026-06-30, UA1878 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +20 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 | 271 | 89% |
| 16-30 min | 18 | 6% |
| 31-60 min | 7 | 2% |
| 61-120 min | 7 | 2% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 21 | 81% | +2 min |
| 2025-08 | 27 | 96% | -8 min |
| 2025-09 | 29 | 100% | -12 min |
| 2025-10 | 22 | 95% | -8 min |
| 2025-11 | 23 | 78% | +12 min |
| 2025-12 | 31 | 81% | +10 min |
| 2026-01 | 28 | 86% | +14 min |
| 2026-02 | 27 | 89% | -5 min |
| 2026-03 | 28 | 86% | +1 min |
| 2026-04 | 16 | 81% | +34 min |
| 2026-05 | 25 | 88% | -4 min |
| 2026-06 | 29 | 97% | -7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 86% |
| Tue | 30 | 87% |
| Wed | 27 | 81% |
| Thu | 52 | 94% |
| Fri | 48 | 96% |
| Sat | 47 | 87% |
| Sun | 51 | 84% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…