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Flight Reliability

DL 2015 · Delta Air Lines

Austin → Los Angeles (AUS–LAX)84% of its flights flew this route. The rest (ATL–AVL, ATL–PHL) are included in these numbers.

78
Usually Fine
WanderNerd Reliability Score
79%
Arrive within 15 minutes
7 min
Average arrival delay
0.9%
Cancelled
7 min early
Median arrival delay

Based on 220 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 2015 departing between 6–9 PM arrived on time 85% of the time, versus 78% between 3–6 PM.

Sunday scaries are real for this one.

DL 2015 arrived on time 90% of the time on Wednesdays and just 72% on Sundays. That gap is worth planning around.

A bit behind the AUS–LAX route.

DL 2015 arrived on time 79% of the time, versus 82% across the AUS–LAX route.

Slipping a little lately.

DL 2015 arrived on time 87% of the time over the last three months in the data, compared with 91% in the three months before that.

The breakdown

On-time by weekday
  • Mon78%(32 flights)
  • Tue83%(30 flights)
  • Wed90%(30 flights)
  • Thu77%(34 flights)
  • Fri72%(32 flights)
  • Sat84%(25 flights)
  • Sun72%(32 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 3–6 PM78%(180 flights)
  • 6–9 PM85%(34 flights)
On-time trend by month
88%
May

Jun 62% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%21
July 202548%25
August 202566%29
September 202597%30
October 202587%30
November 202589%27
December 202595%19
April 202680%10
May 202688%24
Departures on time
79%
Diverted
1.4%
Flights flown
215
Months covered
9

Same route, other flights

Keep nerding

Based on 220 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.