UA2811 ORD → ATL

United Airlines · Chicago, IL to Atlanta, GA · 35 flights observed, 2026-05-21 to 2026-06-24 · 606 mi

This flight's reliability varies a lot by day of week — 100% on-time on Saturdays vs. 60% on Sundays.

UA2811 covers more than one route in the data window — the stats below are for ORD → ATL, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
79%
Median delay
-6 min
90th percentile
+43 min
Cancellation rate
3%

How often is UA2811 on time?

Across 35 flights on ORD → ATL from 2026-05-21 to 2026-06-24, UA2811 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +43 min or later. 3% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2779%
16-30 min26%
31-60 min412%
61-120 min13%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-051182%+8 min
2026-062378%-2 min

Performance by day of week

DayFlightsOn-time
Mon580%
Tue580%
Wed580%
Thu475%
Fri580%
Sat5100%
Sun560%

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