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Flight Reliability

DL 1338 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1338 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

90%
Arrive within 15 minutes
4 min early
Average arrival delay
0.6%
Cancelled
11 min early
Median arrival delay

Based on 360 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(51 flights)
  • Tue87%(52 flights)
  • Wed92%(52 flights)
  • Thu94%(52 flights)
  • Fri96%(52 flights)
  • Sat85%(46 flights)
  • Sun85%(53 flights)
On-time by departure window
  • 6–9 AM90%(259 flights)
  • 9 AM–12 PM85%(68 flights)
  • 3–6 PM97%(31 flights)
On-time trend by month
87%
May

Jun 80% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202593%30
August 202594%31
September 202597%30
October 202594%31
November 202590%30
December 202584%31
January 202687%31
February 202686%28
March 202696%28
April 202689%28
May 202687%30
Departures on time
90%
Diverted
0%
Flights flown
358
Months covered
12

Keep nerding

Based on 360 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.