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Flight Reliability

UA 5988 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5988 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

89%
Arrive within 15 minutes
3 min early
Average arrival delay
1.0%
Cancelled
11 min early
Median arrival delay

Based on 210 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(35 flights)
  • Tue96%(25 flights)
  • Wed100%(24 flights)
  • Thu83%(35 flights)
  • Fri82%(33 flights)
  • Sat96%(22 flights)
  • Sun88%(33 flights)
On-time by departure window
  • 3–6 AM97%(147 flights)
  • 9 AM–12 PM91%(21 flights)
  • 12–3 PM59%(39 flights)
On-time trend by month
96%
May

Jun 53% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%15
July 202554%13
August 202587%23
September 202597%30
October 2025100%31
November 2025100%29
December 202582%17
April 202691%22
May 202696%27
Departures on time
90%
Diverted
0.5%
Flights flown
207
Months covered
9

Keep nerding

Based on 210 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.