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Flight Reliability

UA 1338 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1338 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

73%
Arrive within 15 minutes
16 min
Average arrival delay
0.6%
Cancelled
4 min early
Median arrival delay

Based on 463 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(74 flights)
  • Tue80%(46 flights)
  • Wed82%(72 flights)
  • Thu64%(70 flights)
  • Fri72%(71 flights)
  • Sat67%(52 flights)
  • Sun69%(74 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 12–3 PM76%(21 flights)
  • 3–6 PM63%(109 flights)
  • 6–9 PM76%(170 flights)
  • 9 PM–12 AM75%(158 flights)
On-time trend by month
80%
May

Jun 62% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%73
July 202570%30
August 202558%45
September 202583%36
October 202567%58
November 202577%52
December 202583%30
January 202696%23
February 202695%21
March 202672%25
April 202663%27
May 202680%39
Departures on time
75%
Diverted
0.2%
Flights flown
459
Months covered
12

Keep nerding

Based on 463 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.