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Flight Reliability

DL 1073 · Delta Air Lines

San Antonio → Atlanta (SAT–ATL)

94
Nerd Approved
WanderNerd Reliability Score
94%
Arrive within 15 minutes
4 min early
Average arrival delay
1.9%
Cancelled
10 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Thursday comes out ahead.

A small edge: 96% on time on Thursdays against 92% on Mondays.

Better than the SAT–ATL route average.

DL 1073 arrived on time 94% of the time, versus 86% across the SAT–ATL route.

Better than the Delta Air Lines network average.

DL 1073 arrived on time 94% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon92%(49 flights)
  • Tue94%(52 flights)
  • Wed94%(52 flights)
  • Thu96%(52 flights)
  • Fri96%(52 flights)
  • Sat94%(48 flights)
  • Sun94%(52 flights)
On-time trend by month
94%
May

Jun 93% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%28
July 202597%31
August 202587%31
September 2025100%30
October 202597%31
November 2025100%29
December 202587%31
January 202693%28
February 202696%28
March 202693%30
April 202697%29
May 202694%31
Departures on time
95%
Diverted
0.3%
Flights flown
357
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.