Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 2158 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2158 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

86%
Arrive within 15 minutes
3 min early
Average arrival delay
2.1%
Cancelled
13 min early
Median arrival delay

Based on 423 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(59 flights)
  • Tue89%(62 flights)
  • Wed89%(61 flights)
  • Thu89%(64 flights)
  • Fri81%(62 flights)
  • Sat85%(47 flights)
  • Sun88%(59 flights)
On-time by departure window
  • 6–9 AM94%(188 flights)
  • 9 AM–12 PM88%(34 flights)
  • 12–3 PM80%(161 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM63%(30 flights)
On-time trend by month
98%
May

Jun 74% → May 98% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%35
July 202572%57
August 202583%29
September 202589%27
October 202577%30
November 202585%26
December 202587%31
January 202691%46
February 202694%32
March 202690%31
April 202697%30
May 202698%40
Departures on time
87%
Diverted
0%
Flights flown
414
Months covered
12

Keep nerding

Based on 423 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.