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Flight Reliability

UA 3642 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3642 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

90%
Arrive within 15 minutes
8 min early
Average arrival delay
1.7%
Cancelled
19 min early
Median arrival delay

Based on 354 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(49 flights)
  • Tue94%(48 flights)
  • Wed91%(46 flights)
  • Thu94%(49 flights)
  • Fri86%(49 flights)
  • Sat87%(52 flights)
  • Sun89%(55 flights)
On-time by departure window
  • 6–9 AM90%(312 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM87%(15 flights)
  • 9 PM–12 AM87%(15 flights)
On-time trend by month
100%
May

Jun 90% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202587%30
August 202597%31
September 2025100%27
October 202594%31
November 202586%29
December 202587%38
January 202688%34
February 202685%27
March 202658%12
April 202690%29
May 2026100%30
Departures on time
90%
Diverted
0%
Flights flown
348
Months covered
12

Keep nerding

Based on 354 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.