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Flight Reliability

UA 5459 · United Airlines

Houston → Colorado Springs (IAH–COS)93% of its flights flew this route. The rest (LAX–RDD, CID–ORD) are included in these numbers.

80
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
13 min
Average arrival delay
1.0%
Cancelled
5 min early
Median arrival delay

Based on 297 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

UA 5459 arrived on time 84% of the time on Tuesdays and just 69% on Fridays. That gap is worth planning around.

A bit behind the IAH–COS route.

UA 5459 arrived on time 77% of the time, versus 82% across the IAH–COS route.

Recent months have been rougher.

UA 5459 arrived on time 76% of the time over the last three months in the data, compared with 85% in the three months before that.

The breakdown

On-time by weekday
  • Mon81%(43 flights)
  • Tue84%(38 flights)
  • Wed72%(39 flights)
  • Thu79%(42 flights)
  • Fri69%(45 flights)
  • Sat80%(44 flights)
  • Sun77%(43 flights)
On-time by departure window
  • 6–9 AM—(4 flights)
  • 3–6 PM—(9 flights)
  • 6–9 PM77%(280 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
83%
May

Jul 68% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202568%28
August 202584%31
September 202583%30
October 202574%31
November 202577%30
December 202583%18
February 202694%18
March 202671%31
April 202673%30
May 202683%29
Departures on time
78%
Diverted
0%
Flights flown
294
Months covered
12

Same route, other flights

Keep nerding

Based on 297 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.