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Flight Reliability

UA 4174 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4174 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

67%
Arrive within 15 minutes
20 min
Average arrival delay
6.6%
Cancelled
6 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(48 flights)
  • Tue61%(49 flights)
  • Wed59%(49 flights)
  • Thu72%(50 flights)
  • Fri71%(49 flights)
  • Sat69%(49 flights)
  • Sun64%(45 flights)
On-time by departure window
  • 6–9 AM85%(54 flights)
  • 9 AM–12 PM—(9 flights)
  • 12–3 PM80%(91 flights)
  • 3–6 PM—(2 flights)
  • 6–9 PM54%(183 flights)
On-time trend by month
69%
May

Jun 77% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202581%31
August 202583%29
September 202597%29
October 202563%30
November 202538%21
December 202555%29
January 202667%27
February 202648%25
March 202641%29
April 202673%30
May 202669%29
Departures on time
67%
Diverted
0%
Flights flown
339
Months covered
12

Keep nerding

Based on 363 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.