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Flight Reliability

DL 1170 · Delta Air Lines

Atlanta → Austin (ATL–AUS)98% of its flights flew this route. The rest (ATL–CHA) are included in these numbers.

67
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
11 min
Average arrival delay
2.8%
Cancelled
3 min early
Median arrival delay

Based on 324 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 1170 arrived on time 80% of the time on Tuesdays and just 65% on Sundays. That gap is worth planning around.

Lagging the ATL–AUS route.

DL 1170 arrived on time 71% of the time, versus 79% across the ATL–AUS route.

Lagging the Delta Air Lines network.

DL 1170 arrived on time 71% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon71%(52 flights)
  • Tue80%(40 flights)
  • Wed73%(40 flights)
  • Thu65%(51 flights)
  • Fri71%(49 flights)
  • Sat77%(35 flights)
  • Sun65%(48 flights)
On-time by departure window
  • 6–9 AM—(3 flights)
  • 6–9 PM71%(312 flights)
On-time trend by month
80%
May

Jun 52% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202552%29
July 202546%28
August 202555%31
September 202587%30
October 202590%31
November 202582%27
December 202563%30
January 202668%22
February 202694%17
March 202671%17
April 202674%23
May 202680%30
Departures on time
69%
Diverted
0%
Flights flown
315
Months covered
12

Same route, other flights

Keep nerding

Based on 324 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.