Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 2101 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2101 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

69%
Arrive within 15 minutes
18 min
Average arrival delay
1.2%
Cancelled
2 min early
Median arrival delay

Based on 413 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(59 flights)
  • Tue72%(54 flights)
  • Wed72%(58 flights)
  • Thu73%(59 flights)
  • Fri61%(61 flights)
  • Sat68%(53 flights)
  • Sun68%(63 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM85%(78 flights)
  • 9 AM–12 PM91%(43 flights)
  • 12–3 PM85%(126 flights)
  • 3–6 PM40%(144 flights)
  • 9 PM–12 AM53%(15 flights)
On-time trend by month
90%
May

Jun 65% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%54
July 202546%28
August 202523%31
September 202530%30
October 202568%31
November 202583%29
December 202577%31
January 2026100%31
February 202691%23
March 202686%29
April 202662%42
May 202690%48
Departures on time
75%
Diverted
0.2%
Flights flown
407
Months covered
12

Keep nerding

Based on 413 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.