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Flight Reliability

DL 1438 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1438 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

79%
Arrive within 15 minutes
6 min
Average arrival delay
2.4%
Cancelled
14 min early
Median arrival delay

Based on 410 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(57 flights)
  • Tue78%(58 flights)
  • Wed76%(58 flights)
  • Thu79%(58 flights)
  • Fri86%(58 flights)
  • Sat79%(53 flights)
  • Sun78%(58 flights)
On-time by departure window
  • 6–9 AM80%(35 flights)
  • 3–6 PM80%(258 flights)
  • 6–9 PM79%(107 flights)
On-time trend by month
95%
May

Jun 48% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%29
July 202552%27
August 202581%31
September 202577%30
October 202577%31
January 202672%25
February 202680%45
March 202685%60
April 202693%58
May 202695%60
Departures on time
83%
Diverted
0%
Flights flown
400
Months covered
11

Keep nerding

Based on 410 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.