DL661

DL661 (Delta Air Lines) is a multi-stop service on 5 routes, busiest Fort Lauderdale to Cincinnati. Of 1,089 departures recorded from October 2024 to July 2026, 75.1% 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 periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January2958▲ 100.0%
February4056▲ 40.0%
March5862▲ 6.9%
April4360▲ 39.5%
May4037▼ 7.5%
June5654▼ 3.6%
July62620.0%
August62––
September60––
October62–in progress
November59––
December50––
Year to date (Jan–Jul)328389▲ 18.6%

according to the US BTS · October 2024 → July 2026

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 periods19 periods
PeriodOn time 2025On time 2026Change vs last year
January72.4%90.6%▲ 25.1%
February77.5%87.5%▲ 12.9%
March67.9%66.7%▼ 1.8%
April65.1%86.7%▲ 33.1%
May77.5%78.4%▲ 1.1%
June58.5%68.5%▲ 17.1%
July49.1%55.7%▲ 13.5%
August72.6%––
September78.3%––
October90.3%–in progress
November86.4%––
December68.8%––
Year-to-date average (Jan–Jul)66.9%76.3%▲ 14.1%

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined
The most recent periods19 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January05–
February00–
March220.0%
April00–
May00–
June30▼ 100.0%
July51▼ 80.0%
August0––
September0––
October0–in progress
November0––
December2––
Year to date (Jan–Jul)108▼ 20.0%

according to the US BTS · October 2024 → July 2026

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 98.2% 1,069
  • Cancelled 1.8% 20

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026

On time, leg by leg

  1. FLL–CVG499 70.8%
  2. CVG–FLL467 76.4%
  3. MKE–ATL66 95.5%
  4. SNA–ATL34 75.8%

Departures within 15 minutes of schedule; small figure = departures recorded.

Legs flown under this number

4
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 100.0% 0
November 2024 29 29 100.0% 0
December 2024 30 30 83.3% 0
January 2025 29 29 72.4% 0
February 2025 40 40 77.5% 0
March 2025 58 56 67.9% 2
April 2025 43 43 65.1% 0
May 2025 40 40 77.5% 0
June 2025 56 53 58.5% 3
July 2025 62 57 49.1% 5
August 2025 62 62 72.6% 0
September 2025 60 60 78.3% 0
October 2025 62 62 90.3% 0
November 2025 59 59 86.4% 0
December 2025 50 48 68.8% 2
January 2026 58 53 90.6% 5
February 2026 56 56 87.5% 0
March 2026 62 60 66.7% 2
April 2026 60 60 86.7% 0
May 2026 37 37 78.4% 0
June 2026 54 54 68.5% 0
July 2026 62 61 55.7% 1

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