Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 4800 · United Airlines

GJT → Denver (GJT–DEN)91% of its flights flew this route. The rest (CMH–ORD, ORD–AVL) are included in these numbers.

94
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
1 min
Average arrival delay
0%
Cancelled
18 min early
Median arrival delay

Based on 361 historical flights. Data through May 2026.

What the data says

The 3–6 AM departure wins.

UA 4800 departing between 3–6 AM arrived on time 87% of the time, versus 71% between 9 AM–12 PM.

Tuesday has been the better bet.

A small edge: 89% on time on Tuesdays against 83% on Sundays.

Better than the GJT–DEN route average.

UA 4800 arrived on time 86% of the time, versus 77% across the GJT–DEN route.

Better than the United Airlines network average.

UA 4800 arrived on time 86% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon85%(52 flights)
  • Tue89%(52 flights)
  • Wed86%(51 flights)
  • Thu88%(50 flights)
  • Fri87%(52 flights)
  • Sat88%(51 flights)
  • Sun83%(53 flights)
On-time by departure window
  • 3–6 AM87%(330 flights)
  • 9 AM–12 PM71%(17 flights)
  • 12–3 PM86%(14 flights)
On-time trend by month
94%
May

Jun 83% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202597%30
August 202574%31
September 202590%30
October 202594%31
November 202593%30
December 202577%30
January 202673%30
February 202682%27
March 202690%31
April 202690%30
May 202694%31
Departures on time
89%
Diverted
0%
Flights flown
361
Months covered
12

Same route, other flights

Keep nerding

Based on 361 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.