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Flight Reliability

UA 1598 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1598 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

83%
Arrive within 15 minutes
9 min
Average arrival delay
1.8%
Cancelled
7 min early
Median arrival delay

Based on 386 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(56 flights)
  • Tue89%(47 flights)
  • Wed88%(58 flights)
  • Thu85%(59 flights)
  • Fri80%(59 flights)
  • Sat88%(41 flights)
  • Sun78%(59 flights)
On-time by departure window
  • 6–9 AM89%(221 flights)
  • 9 AM–12 PM84%(50 flights)
  • 12–3 PM96%(28 flights)
  • 3–6 PM—(8 flights)
  • 6–9 PM63%(72 flights)
On-time trend by month
90%
May

Jun 50% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202550%22
July 202553%19
August 202589%26
September 202580%30
October 202581%31
November 202583%29
December 202584%31
January 202687%30
February 202687%53
March 202695%39
April 202697%30
May 202690%39
Departures on time
83%
Diverted
0%
Flights flown
379
Months covered
12

Keep nerding

Based on 386 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.