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Flight Reliability

UA 1937 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1937 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

77%
Arrive within 15 minutes
12 min
Average arrival delay
0.5%
Cancelled
4 min early
Median arrival delay

Based on 548 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(80 flights)
  • Tue77%(77 flights)
  • Wed80%(76 flights)
  • Thu72%(75 flights)
  • Fri73%(75 flights)
  • Sat79%(77 flights)
  • Sun81%(80 flights)
On-time by departure window
  • 6–9 AM89%(18 flights)
  • 12–3 PM76%(276 flights)
  • 3–6 PM73%(192 flights)
  • 6–9 PM91%(54 flights)
On-time trend by month
76%
May

Jun 46% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%35
July 202548%60
August 202571%65
September 202583%30
October 202587%37
November 202598%58
December 202578%32
January 202690%29
February 202685%27
March 202683%57
April 202687%60
May 202676%50
Departures on time
78%
Diverted
0.9%
Flights flown
540
Months covered
12

Keep nerding

Based on 548 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.