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Flight Reliability

UA 475 · United Airlines

Denver → Houston (DEN–IAH)86% of its flights flew this route. The rest (STL–DEN, SFO–DEN) are included in these numbers.

70
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
19 min
Average arrival delay
0.5%
Cancelled
3 min early
Median arrival delay

Based on 423 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

UA 475 departing between 6–9 PM arrived on time 74% of the time, versus 30% between 3–6 PM.

Sunday scaries are real for this one.

UA 475 arrived on time 81% of the time on Saturdays and just 53% on Sundays. That gap is worth planning around.

Lagging the DEN–IAH route.

UA 475 arrived on time 70% of the time, versus 79% across the DEN–IAH route.

Lagging the United Airlines network.

UA 475 arrived on time 70% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon68%(60 flights)
  • Tue69%(61 flights)
  • Wed77%(61 flights)
  • Thu71%(59 flights)
  • Fri74%(58 flights)
  • Sat81%(59 flights)
  • Sun53%(61 flights)
On-time by departure window
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM68%(25 flights)
  • 3–6 PM30%(30 flights)
  • 6–9 PM74%(361 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
74%
May

Jun 59% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202559%53
July 202541%61
August 202558%31
September 202567%30
October 202587%31
November 202584%32
December 202571%31
January 202684%31
February 202689%27
March 202671%31
April 2026100%30
May 202674%31
Departures on time
70%
Diverted
0.5%
Flights flown
419
Months covered
12

Same route, other flights

Keep nerding

Based on 423 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.