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Flight Reliability

UA 1226 · United Airlines

Phoenix → Denver (PHX–DEN)82% of its flights flew this route. The rest (DEN–GTF, EWR–SRQ) are included in these numbers.

75
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
14 min
Average arrival delay
1.4%
Cancelled
2 min early
Median arrival delay

Based on 415 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

UA 1226 departing between 6–9 PM arrived on time 81% of the time, versus 73% between 6–9 AM.

Sunday scaries are real for this one.

UA 1226 arrived on time 81% of the time on Tuesdays. On Sundays: 69%.

A bit behind the United Airlines network.

UA 1226 arrived on time 75% of the time, versus 79% across the United Airlines network.

Slipping a little lately.

UA 1226 arrived on time 79% of the time over the last three months in the data, compared with 82% in the three months before that.

The breakdown

On-time by weekday
  • Mon77%(60 flights)
  • Tue81%(59 flights)
  • Wed73%(59 flights)
  • Thu79%(58 flights)
  • Fri75%(55 flights)
  • Sat71%(56 flights)
  • Sun69%(61 flights)
On-time by departure window
  • 6–9 AM73%(11 flights)
  • 9 AM–12 PM—(1 flights)
  • 3–6 PM74%(343 flights)
  • 6–9 PM81%(53 flights)
On-time trend by month
74%
May

Jun 63% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202557%30
August 202559%29
September 202566%29
October 202574%31
November 202589%27
December 202581%31
January 202681%31
February 202686%28
March 202676%33
April 202687%60
May 202674%49
Departures on time
77%
Diverted
0.2%
Flights flown
408
Months covered
12

Same route, other flights

Keep nerding

Based on 415 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.