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Flight Reliability

UA 1337 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1337 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

85%
Arrive within 15 minutes
1 min early
Average arrival delay
0.4%
Cancelled
9 min early
Median arrival delay

Based on 738 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(107 flights)
  • Tue87%(106 flights)
  • Wed82%(106 flights)
  • Thu85%(104 flights)
  • Fri84%(105 flights)
  • Sat90%(96 flights)
  • Sun85%(110 flights)
On-time by departure window
  • 6–9 AM98%(42 flights)
  • 9 AM–12 PM89%(263 flights)
  • 12–3 PM87%(77 flights)
  • 3–6 PM82%(327 flights)
  • 6–9 PM68%(25 flights)
On-time trend by month
92%
May

Jun 71% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%84
July 202574%61
August 202584%62
September 202591%54
October 202591%43
November 202590%81
December 202583%63
January 202684%57
February 202684%38
March 202688%58
April 202697%60
May 202692%73
Departures on time
86%
Diverted
0.1%
Flights flown
734
Months covered
12

Keep nerding

Based on 738 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.