UA5636 SAT → ORD

United Airlines · San Antonio, TX to Chicago, IL · 39 flights observed, 2026-02-12 to 2026-03-28 · 1,041 mi

This flight's reliability varies a lot by day of week — 100% on-time on Sundays vs. 50% on Wednesdays.

UA5636 covers more than one route in the data window — the stats below are for SAT → ORD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
68%
Median delay
+5 min
90th percentile
+47 min
Cancellation rate
5%

How often is UA5636 on time?

Across 39 flights on SAT → ORD from 2026-02-12 to 2026-03-28, UA5636 arrived within 15 minutes of schedule 68% of the time. The median arrival delay was +5 min, and the worst 10% of flights arrived +47 min or later. 5% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2568%
16-30 min616%
31-60 min38%
61-120 min38%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-021486%+2 min
2026-032357%+19 min

Performance by day of week

DayFlightsOn-time
Mon667%
Tue3100%
Wed650%
Thu757%
Fri650%
Sat475%
Sun5100%

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