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Route Reliability

Austin → Ontario

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

84
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
8 min
Average arrival delay
0.3%
Cancelled
335
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 77% of the time across 335 flights. No comparison to make.

What the data says

Morning-you made the right choice.

AUS–ONT flights departing between 9 AM–12 PM arrived on time 94% of the time, versus 69% between 3–6 PM.

Sunday scaries are real for this one.

AUS–ONT flights arrived on time 94% of the time on Tuesdays and just 54% on Sundays. That gap is worth planning around.

It basically never cancels.

Out of 335 scheduled flights, only 0.3% were cancelled.

Slipping a little lately.

AUS–ONT flights arrived on time 80% of the time over the last three months in the data, compared with 84% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon77%(51 flights)
  • Tue94%(52 flights)
  • Wed85%(52 flights)
  • Thu75%(52 flights)
  • Fri73%(52 flights)
  • Sat87%(23 flights)
  • Sun54%(52 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM94%(17 flights)
  • 12–3 PM84%(137 flights)
  • 3–6 PM69%(144 flights)
  • 6–9 PM79%(34 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
73%
May

Jun 57% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%30
July 202584%31
August 202577%26
September 202569%26
October 202574%27
November 202569%29
December 202581%31
January 202692%26
February 202679%24
March 202694%31
April 202674%27
May 202673%26

Same trip, other airports

Keep nerding

Based on 335 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.