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Flight Reliability

DL 1398 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1398 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

74%
Arrive within 15 minutes
14 min
Average arrival delay
1.6%
Cancelled
4 min early
Median arrival delay

Based on 576 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(81 flights)
  • Tue74%(76 flights)
  • Wed74%(80 flights)
  • Thu62%(82 flights)
  • Fri75%(84 flights)
  • Sat86%(79 flights)
  • Sun74%(83 flights)
On-time by departure window
  • 9 AM–12 PM84%(354 flights)
  • 12–3 PM51%(158 flights)
  • 3–6 PM72%(53 flights)
On-time trend by month
73%
May

Jun 60% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%52
July 202563%62
August 202584%62
September 202564%52
October 202567%61
November 202581%57
December 202578%49
January 202666%29
February 202684%25
March 202693%30
April 202693%30
May 202673%56
Departures on time
78%
Diverted
0.3%
Flights flown
565
Months covered
12

Keep nerding

Based on 576 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.