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Flight Reliability

DL 5437 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5437 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

82%
Arrive within 15 minutes
6 min
Average arrival delay
3.2%
Cancelled
11 min early
Median arrival delay

Based on 555 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(83 flights)
  • Tue86%(86 flights)
  • Wed91%(90 flights)
  • Thu82%(83 flights)
  • Fri79%(89 flights)
  • Sat89%(37 flights)
  • Sun74%(68 flights)
On-time by departure window
  • 6–9 AM83%(268 flights)
  • 9 AM–12 PM81%(268 flights)
On-time trend by month
81%
May

Jun 77% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%52
July 202585%52
August 202596%46
September 202596%44
October 202590%52
November 202579%47
December 202550%32
January 202669%49
February 202689%52
March 202695%19
April 202671%34
May 202681%57
Departures on time
83%
Diverted
0.2%
Flights flown
536
Months covered
12

Keep nerding

Based on 555 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.