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Flight Reliability

UA 2637 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2637 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

82%
Arrive within 15 minutes
1 min
Average arrival delay
0%
Cancelled
5 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(52 flights)
  • Tue89%(52 flights)
  • Wed77%(51 flights)
  • Thu84%(51 flights)
  • Fri81%(52 flights)
  • Sat75%(52 flights)
  • Sun83%(53 flights)
On-time by departure window
  • 6–9 AM58%(73 flights)
  • 9 AM–12 PM88%(290 flights)
On-time trend by month
87%
May

Jun 80% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202536%31
August 202567%30
September 202593%30
October 202597%31
November 202597%30
December 202574%31
January 202681%31
February 202696%27
March 202690%31
April 202690%30
May 202687%31
Departures on time
88%
Diverted
0.3%
Flights flown
363
Months covered
12

Keep nerding

Based on 364 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.