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Flight Reliability

DL 1390 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1390 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

62%
Arrive within 15 minutes
31 min
Average arrival delay
6.4%
Cancelled
3 min
Median arrival delay

Based on 487 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon56%(71 flights)
  • Tue65%(71 flights)
  • Wed55%(73 flights)
  • Thu59%(75 flights)
  • Fri70%(73 flights)
  • Sat65%(17 flights)
  • Sun67%(69 flights)
On-time by departure window
  • 12–3 PM—(4 flights)
  • 3–6 PM61%(227 flights)
  • 6–9 PM63%(218 flights)
On-time trend by month
77%
May

Jun 35% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202535%46
July 202543%40
August 202587%47
September 202583%35
October 202545%47
November 202545%40
December 202538%29
January 202683%23
February 202678%23
March 202669%29
April 202674%42
May 202677%48
Departures on time
62%
Diverted
1.4%
Flights flown
449
Months covered
12

Keep nerding

Based on 487 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.