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Flight Reliability

DL 4018 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4018 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

86%
Arrive within 15 minutes
0 min
Average arrival delay
1.2%
Cancelled
9 min early
Median arrival delay

Based on 671 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(95 flights)
  • Tue89%(97 flights)
  • Wed90%(95 flights)
  • Thu90%(92 flights)
  • Fri79%(92 flights)
  • Sat85%(95 flights)
  • Sun83%(97 flights)
On-time by departure window
  • 6–9 AM87%(258 flights)
  • 9 AM–12 PM88%(373 flights)
  • 12–3 PM63%(16 flights)
  • 3–6 PM38%(16 flights)
On-time trend by month
100%
May

Jun 81% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%53
July 202592%62
August 202586%62
September 202592%60
October 202592%62
November 202586%50
December 202576%62
January 202677%62
February 202686%56
March 202677%62
April 202693%60
May 2026100%12
Departures on time
87%
Diverted
0%
Flights flown
663
Months covered
12

Keep nerding

Based on 671 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.