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Flight Reliability

DL 31 · Delta Air Lines

Atlanta → Dallas–Fort Worth (ATL–DFW)

57
A Little Dicey
WanderNerd Reliability Score
65%
Arrive within 15 minutes
21 min
Average arrival delay
2.2%
Cancelled
4 min
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 31 arrived on time 82% of the time on Wednesdays and just 53% on Sundays. That gap is worth planning around.

Lagging the ATL–DFW route.

DL 31 arrived on time 65% of the time, versus 74% across the ATL–DFW route.

Well behind the Delta Air Lines network.

DL 31 arrived on time 65% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon61%(51 flights)
  • Tue69%(52 flights)
  • Wed82%(51 flights)
  • Thu69%(52 flights)
  • Fri54%(50 flights)
  • Sat65%(48 flights)
  • Sun53%(51 flights)
On-time trend by month
58%
May

Jun 39% → May 58% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202539%28
July 202545%31
August 202568%31
September 202580%30
October 202568%31
November 202569%29
December 202581%31
January 202652%27
February 202675%28
March 202664%28
April 202677%30
May 202658%31
Departures on time
66%
Diverted
0.5%
Flights flown
355
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.