UA1597 CMH → SFO

United Airlines · Columbus, OH to San Francisco, CA · 118 flights observed, 2026-03-05 to 2026-06-30 · 2,120 mi

This flight's reliability varies a lot by day of week — 88% on-time on Mondays vs. 50% on Tuesdays.

UA1597 covers more than one route in the data window — the stats below are for CMH → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
71%
Median delay
+6 min
90th percentile
+48 min
Cancellation rate
1%

How often is UA1597 on time?

Across 118 flights on CMH → SFO from 2026-03-05 to 2026-06-30, UA1597 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +48 min or later. 1% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time8371%
16-30 min1513%
31-60 min119%
61-120 min43%
2+ hrs43%

Performance by month

MonthFlightsOn-timeAvg delay
2026-032774%+10 min
2026-043067%+14 min
2026-053077%+13 min
2026-063067%+41 min

Performance by day of week

DayFlightsOn-time
Mon1788%
Tue1650%
Wed1675%
Thu1765%
Fri1765%
Sat1776%
Sun1776%

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