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Route Reliability

Houston → Ontario

HOU–ONT · 1,345 miles · William P. Hobby Airport to Ontario International Airport

89
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
4 min
Average arrival delay
0.3%
Cancelled
362
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 84% of the time across 362 flights. No comparison to make.

What the data says

Morning flights do better here.

HOU–ONT flights departing between 9 AM–12 PM arrived on time 93% of the time, versus 77% between 12–3 PM.

Saturday is the weak spot.

HOU–ONT flights arrived on time 90% of the time on Tuesdays. On Saturdays: 79%.

It basically never cancels.

Out of 362 scheduled flights, only 0.3% were cancelled.

Recent months have been rougher.

HOU–ONT flights arrived on time 80% of the time over the last three months in the data, compared with 89% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon82%(51 flights)
  • Tue90%(51 flights)
  • Wed85%(52 flights)
  • Thu88%(51 flights)
  • Fri84%(51 flights)
  • Sat79%(52 flights)
  • Sun82%(51 flights)
On-time by departure window
  • 6–9 AM90%(115 flights)
  • 9 AM–12 PM93%(29 flights)
  • 12–3 PM77%(91 flights)
  • 3–6 PM83%(53 flights)
  • 6–9 PM83%(42 flights)
  • 9 PM–12 AM79%(29 flights)
On-time trend by month
80%
May

Jun 80% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202597%31
August 202583%30
September 202593%30
October 202577%30
November 202576%29
December 202584%31
January 202693%30
February 202689%27
March 202681%31
April 202680%30
May 202680%30

Same trip, other airports

Keep nerding

Based on 362 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.