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Flight Reliability

DL 2018 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 2018 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
0 min
Average arrival delay
4.0%
Cancelled
11 min early
Median arrival delay

Based on 528 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(68 flights)
  • Tue88%(72 flights)
  • Wed85%(73 flights)
  • Thu75%(72 flights)
  • Fri87%(71 flights)
  • Sat82%(77 flights)
  • Sun82%(72 flights)
On-time by departure window
  • 6–9 AM88%(345 flights)
  • 9 AM–12 PM73%(66 flights)
  • 12–3 PM78%(94 flights)
On-time trend by month
93%
May

Jun 66% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%53
July 202578%55
August 202580%60
September 202593%60
October 202585%61
November 202584%38
December 202587%30
January 202682%27
February 202689%28
March 202681%31
April 202697%32
May 202693%30
Departures on time
87%
Diverted
0.4%
Flights flown
505
Months covered
12

Keep nerding

Based on 528 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.