Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 3726 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3726 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

84%
Arrive within 15 minutes
13 min
Average arrival delay
1.7%
Cancelled
13 min early
Median arrival delay

Based on 405 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(55 flights)
  • Tue86%(57 flights)
  • Wed84%(57 flights)
  • Thu87%(55 flights)
  • Fri76%(55 flights)
  • Sat92%(59 flights)
  • Sun88%(58 flights)
On-time by departure window
  • 6–9 AM80%(240 flights)
  • 9 AM–12 PM98%(57 flights)
  • 12–3 PM94%(46 flights)
  • 3–6 PM76%(29 flights)
  • 6–9 PM88%(24 flights)
On-time trend by month
97%
May

Jun 95% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202595%37
July 202587%31
August 202580%30
September 202583%30
October 202574%31
November 202571%28
December 202576%42
January 202665%31
February 202693%15
March 202696%48
April 202691%42
May 202697%31
Departures on time
85%
Diverted
0.5%
Flights flown
396
Months covered
12

Keep nerding

Based on 405 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.