UA1504 ORD → LAS

United Airlines · Chicago, IL to Las Vegas, NV · 19 flights observed, 2026-01-08 to 2026-02-09 · 1,514 mi

This flight has been getting more reliable recently — 2026-02's on-time rate (100%) is well above the 69% average from earlier months.

UA1504 covers more than one route in the data window — the stats below are for ORD → LAS, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
79%
Median delay
+2 min
90th percentile
+41 min
Cancellation rate
0%

How often is UA1504 on time?

Across 19 flights on ORD → LAS from 2026-01-08 to 2026-02-09, UA1504 arrived within 15 minutes of schedule 79% 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-time1579%
16-30 min00%
31-60 min211%
61-120 min211%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-011369%+14 min
2026-026100%+3 min

Performance by day of week

DayFlightsOn-time
Mon560%
TueNo data—
WedNo data—
Thu580%
Fri580%
SatNo data—
Sun4100%

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