DL3243

DL3243 (Delta Air Lines) is a multi-stop service on 2 routes, busiest New York to Denver. Of 192 departures recorded from April 2025 to December 2025, 68.5% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

The most recent periods9 periods
PeriodDepartures 2024Departures 2025Change vs last year
January–––
February–––
March–––
April–7–
May–2–
June–23–
July–31–
August–30–
September–30–
October–28–
November–24–
December–17–

according to the US BTS · April 2025 → December 2025

On-time departures by month

All legs combined

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods9 periods
PeriodOn time 2024On time 2025Change vs last year
January–––
February–––
March–––
April–100.0%–
May–50.0%–
June–39.1%–
July–57.1%–
August–58.6%–
September–90.0%–
October–74.1%–
November–79.2%–
December–70.6%–

according to the US BTS · April 2025 → December 2025

Average departure delay by month

All legs combined

according to the US BTS · April 2025 → December 2025

Cancelled departures by month

All legs combined
The most recent periods9 periods
PeriodCancelled 2024Cancelled 2025Change vs last year
January–––
February–––
March–––
April–0–
May–0–
June–0–
July–3–
August–1–
September–0–
October–1–
November–0–
December–0–

according to the US BTS · April 2025 → December 2025

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

This number flies several legs

Several legs: the headline figure averages all of them. See the leg table.

Cancellation share

  • Not cancelled 97.4% 187
  • Cancelled 2.6% 5

Share of all recorded flights in the period, all legs. · Apr 15, 2025 → Dec 19, 2025

Legs flown under this number

1
RoutesDistance (km)Avg delay On timeDepartures
JFK DEN John F. Kennedy International Airport – Denver International Airport 2,610 26.6 min 67.4% 183
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
April 2025 7 7 100.0% 0
May 2025 2 2 50.0% 0
June 2025 23 23 39.1% 0
July 2025 31 28 57.1% 3
August 2025 30 29 58.6% 1
September 2025 30 30 90.0% 0
October 2025 28 27 74.1% 1
November 2025 24 24 79.2% 0
December 2025 17 17 70.6% 0

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