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Flight Reliability

UA 2640 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2640 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
1 min early
Average arrival delay
0.8%
Cancelled
10 min early
Median arrival delay

Based on 367 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(50 flights)
  • Tue91%(53 flights)
  • Wed77%(53 flights)
  • Thu83%(54 flights)
  • Fri87%(54 flights)
  • Sat87%(47 flights)
  • Sun83%(52 flights)
On-time by departure window
  • 3–6 AM92%(12 flights)
  • 6–9 AM86%(218 flights)
  • 9 AM–12 PM85%(60 flights)
  • 3–6 PM78%(73 flights)
On-time trend by month
87%
May

Aug 84% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202584%25
September 202586%35
October 202575%52
November 202580%30
December 202589%47
January 202697%31
February 202696%27
March 202669%55
April 2026100%30
May 202687%31
Departures on time
87%
Diverted
0.3%
Flights flown
363
Months covered
10

Keep nerding

Based on 367 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.