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Flight Reliability

UA 2635 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2635 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

78%
Arrive within 15 minutes
9 min
Average arrival delay
1.1%
Cancelled
4 min early
Median arrival delay

Based on 555 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(80 flights)
  • Tue81%(80 flights)
  • Wed80%(80 flights)
  • Thu85%(79 flights)
  • Fri72%(79 flights)
  • Sat83%(69 flights)
  • Sun72%(81 flights)
On-time by departure window
  • 3–6 AM94%(18 flights)
  • 6–9 AM91%(161 flights)
  • 9 AM–12 PM68%(37 flights)
  • 12–3 PM72%(315 flights)
  • 3–6 PM65%(17 flights)
On-time trend by month
70%
May

Jun 77% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202561%31
August 202582%61
September 202577%60
October 202581%62
November 202581%58
December 202578%60
January 202682%34
February 202684%25
March 202681%32
April 202673%55
May 202670%40
Departures on time
82%
Diverted
0.2%
Flights flown
548
Months covered
12

Keep nerding

Based on 555 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.