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Flight Reliability

UA 1938 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1938 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
3 min
Average arrival delay
0.6%
Cancelled
10 min early
Median arrival delay

Based on 688 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(105 flights)
  • Tue91%(104 flights)
  • Wed83%(100 flights)
  • Thu88%(102 flights)
  • Fri85%(103 flights)
  • Sat78%(72 flights)
  • Sun83%(97 flights)
On-time by departure window
  • 6–9 AM96%(53 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM91%(294 flights)
  • 3–6 PM78%(333 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
90%
May

Jun 84% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%32
July 202555%55
August 202586%59
September 202588%57
October 202587%62
November 202577%53
December 202587%46
January 202692%50
February 202689%62
March 202682%67
April 202696%89
May 202690%51
Departures on time
86%
Diverted
0.1%
Flights flown
683
Months covered
12

Keep nerding

Based on 688 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.