UA1748 ORD → ONT

United Airlines · Chicago, IL to Ontario, CA · 37 flights observed, 2025-08-19 to 2025-09-24 · 1,700 mi

This flight's reliability varies a lot by day of week — 80% on-time on Thursdays vs. 40% on Fridays.

UA1748 covers more than one route in the data window — the stats below are for ORD → ONT, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
62%
Median delay
+2 min
90th percentile
+41 min
Cancellation rate
0%

How often is UA1748 on time?

Across 37 flights on ORD → ONT from 2025-08-19 to 2025-09-24, UA1748 arrived within 15 minutes of schedule 62% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +41 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time2362%
16-30 min822%
31-60 min38%
61-120 min38%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-081377%+1 min
2025-092454%+15 min

Performance by day of week

DayFlightsOn-time
Mon560%
Tue650%
Wed667%
Thu580%
Fri540%
Sat560%
Sun580%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…