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Flight Reliability

DL 1315 · Delta Air Lines

Houston → Atlanta (IAH–ATL)

89
Pretty Reliable
WanderNerd Reliability Score
89%
Arrive within 15 minutes
2 min
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

Sunday scaries are real for this one.

DL 1315 arrived on time 94% of the time on Wednesdays and just 78% on Sundays. That gap is worth planning around.

Better than the IAH–ATL route average.

DL 1315 arrived on time 89% of the time, versus 78% across the IAH–ATL route.

Better than the Delta Air Lines network average.

DL 1315 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon83%(52 flights)
  • Tue92%(51 flights)
  • Wed94%(52 flights)
  • Thu90%(52 flights)
  • Fri90%(52 flights)
  • Sat92%(50 flights)
  • Sun78%(49 flights)
On-time trend by month
97%
May

Jun 83% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202593%30
August 202594%31
September 202597%30
October 202590%31
November 202593%29
December 202580%30
January 202686%29
February 202693%28
March 202662%29
April 202693%30
May 202697%31
Departures on time
89%
Diverted
0%
Flights flown
358
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.