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Flight Reliability

UA 1645 · United Airlines

Cleveland → Houston (CLE–IAH)99% of its flights flew this route. The rest (BUR–SFO, TVC–ORD) are included in these numbers.

98
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
14 min early
Average arrival delay
0.3%
Cancelled
19 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

UA 1645 departing between 6–9 AM arrived on time 94% of the time, versus 79% between 3–6 PM.

Friday is doing you no favors.

UA 1645 arrived on time 98% of the time on Tuesdays. On Fridays: 90%.

Better than the United Airlines network average.

UA 1645 arrived on time 93% of the time, versus 79% across the United Airlines network.

It basically never cancels.

Out of 363 scheduled flights, only 0.3% were cancelled.

The breakdown

On-time by weekday
  • Mon92%(52 flights)
  • Tue98%(52 flights)
  • Wed94%(51 flights)
  • Thu92%(52 flights)
  • Fri90%(51 flights)
  • Sat90%(52 flights)
  • Sun92%(51 flights)
On-time by departure window
  • 6–9 AM94%(328 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM79%(24 flights)
  • 6–9 PM—(8 flights)
On-time trend by month
90%
May

Jun 82% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%28
July 202597%31
August 202594%31
September 2025100%30
October 202594%31
November 202593%30
December 202581%31
January 202694%31
February 202696%27
March 2026100%31
April 202693%30
May 202690%30
Departures on time
96%
Diverted
0.3%
Flights flown
361
Months covered
12

Same route, other flights

Keep nerding

Based on 363 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.