Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 1311 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1311 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

89%
Arrive within 15 minutes
0 min
Average arrival delay
2.2%
Cancelled
8 min early
Median arrival delay

Based on 726 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(100 flights)
  • Tue87%(104 flights)
  • Wed91%(102 flights)
  • Thu87%(102 flights)
  • Fri95%(98 flights)
  • Sat91%(101 flights)
  • Sun83%(102 flights)
On-time by departure window
  • 6–9 AM89%(353 flights)
  • 9 AM–12 PM89%(356 flights)
On-time trend by month
93%
May

Jun 85% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%60
July 202592%62
August 202597%62
September 202593%60
October 202592%62
November 202592%60
December 202579%53
January 202690%58
February 202693%56
March 202675%60
April 202685%58
May 202693%58
Departures on time
89%
Diverted
0.1%
Flights flown
709
Months covered
12

Keep nerding

Based on 726 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.