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Flight Reliability

DL 1684 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1684 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

77%
Arrive within 15 minutes
10 min
Average arrival delay
1.2%
Cancelled
6 min early
Median arrival delay

Based on 254 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(37 flights)
  • Tue80%(30 flights)
  • Wed89%(28 flights)
  • Thu79%(33 flights)
  • Fri70%(33 flights)
  • Sat74%(43 flights)
  • Sun76%(45 flights)
On-time by departure window
  • 9 AM–12 PM85%(109 flights)
  • 12–3 PM—(7 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM69%(130 flights)
On-time trend by month
100%
May

Jun 41% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202541%27
July 202568%22
October 202596%22
November 202567%21
December 202574%27
January 202673%26
February 202671%28
March 202685%20
April 202694%18
May 2026100%30
Departures on time
75%
Diverted
0.8%
Flights flown
249
Months covered
12

Keep nerding

Based on 254 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.