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Flight Reliability

UA 4742 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4742 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

83%
Arrive within 15 minutes
12 min
Average arrival delay
2.2%
Cancelled
8 min early
Median arrival delay

Based on 320 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(48 flights)
  • Tue88%(43 flights)
  • Wed81%(41 flights)
  • Thu81%(47 flights)
  • Fri79%(48 flights)
  • Sat84%(37 flights)
  • Sun85%(47 flights)
On-time by departure window
  • 3–6 AM94%(17 flights)
  • 6–9 AM93%(55 flights)
  • 9 AM–12 PM73%(64 flights)
  • 12–3 PM86%(131 flights)
  • 3–6 PM50%(20 flights)
  • 6–9 PM92%(24 flights)
On-time trend by month
94%
May

Jun 74% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%23
July 202590%30
August 2025100%29
September 202594%17
October 202560%10
November 202569%26
December 202557%30
January 202675%28
February 202693%28
March 202690%29
April 202687%30
May 202694%31
Departures on time
84%
Diverted
0.6%
Flights flown
311
Months covered
12

Keep nerding

Based on 320 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.