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Flight Reliability

DL 1158 · Delta Air Lines

Oklahoma City → Atlanta (OKC–ATL)

89
Pretty Reliable
WanderNerd Reliability Score
92%
Arrive within 15 minutes
5 min early
Average arrival delay
2.7%
Cancelled
17 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Monday is the weak spot.

DL 1158 arrived on time 96% of the time on Fridays. On Mondays: 86%.

A bit ahead of the OKC–ATL route.

DL 1158 arrived on time 92% of the time, versus 86% across the OKC–ATL route.

Better than the Delta Air Lines network average.

DL 1158 arrived on time 92% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon86%(50 flights)
  • Tue92%(52 flights)
  • Wed92%(52 flights)
  • Thu94%(52 flights)
  • Fri96%(51 flights)
  • Sat88%(49 flights)
  • Sun94%(49 flights)
On-time trend by month
90%
May

Jun 89% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%28
July 202590%31
August 202587%30
September 2025100%30
October 2025100%31
November 202596%28
December 202587%30
January 202686%29
February 202693%27
March 202697%30
April 202687%30
May 202690%31
Departures on time
92%
Diverted
0%
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.