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Flight Reliability

DL 337 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 337 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

68%
Arrive within 15 minutes
25 min
Average arrival delay
0.2%
Cancelled
1 min
Median arrival delay

Based on 602 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon57%(86 flights)
  • Tue76%(86 flights)
  • Wed74%(85 flights)
  • Thu78%(86 flights)
  • Fri67%(85 flights)
  • Sat70%(83 flights)
  • Sun54%(87 flights)
On-time by departure window
  • 12–3 PM76%(340 flights)
  • 3–6 PM61%(168 flights)
  • 6–9 PM51%(90 flights)
On-time trend by month
89%
May

Jun 60% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%53
July 202562%60
August 202562%58
September 202582%60
October 202572%60
November 202567%58
December 202546%50
January 202655%31
February 202673%44
March 202655%38
April 202690%30
May 202689%56
Departures on time
73%
Diverted
0.5%
Flights flown
598
Months covered
12

Keep nerding

Based on 602 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.