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Route Reliability

Ontario → Austin

ONT–AUS · 1,196 miles · Ontario International Airport to Austin–Bergstrom International Airport

83
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
7 min
Average arrival delay
0.3%
Cancelled
337
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines79% on time · 336 flights
  • Delta Air Lines0% on time · 1 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning-you made the right choice.

ONT–AUS flights departing between 6–9 AM arrived on time 84% of the time, versus 76% between 12–3 PM.

Sunday scaries are real for this one.

ONT–AUS flights arrived on time 84% of the time on Fridays. On Sundays: 72%.

It basically never cancels.

Out of 337 scheduled flights, only 0.3% were cancelled.

Slipping a little lately.

ONT–AUS flights arrived on time 74% of the time over the last three months in the data, compared with 79% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon75%(52 flights)
  • Tue81%(52 flights)
  • Wed79%(52 flights)
  • Thu83%(52 flights)
  • Fri84%(50 flights)
  • Sat83%(23 flights)
  • Sun72%(53 flights)
On-time by departure window
  • 6–9 AM84%(68 flights)
  • 9 AM–12 PM79%(214 flights)
  • 12–3 PM76%(49 flights)
  • 3–6 PM—(3 flights)
On-time trend by month
62%
May

Jun 73% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202583%30
August 202584%25
September 202592%26
October 202589%27
November 202569%29
December 202577%30
January 202682%28
February 202679%24
March 202675%32
April 202685%27
May 202662%26

Same trip, other airports

Keep nerding

Based on 337 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.