DL686

DL686 (Delta Air Lines) is a multi-stop service on 13 routes, busiest Phoenix to Salt Lake City. Of 683 departures recorded from October 2024 to July 2026, 84.4% 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
January5430▼ 44.4%
February4428▼ 36.4%
March3530▼ 14.3%
April1330▲ 130.8%
May2731▲ 14.8%
June30300.0%
July2931▲ 6.9%
August31––
September30––
October31–in progress
November28––
December28––
Year to date (Jan–Jul)232210▼ 9.5%

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
January70.0%92.6%▲ 32.3%
February75.0%96.3%▲ 28.4%
March85.7%82.8%▼ 3.4%
April92.3%90.0%▼ 2.5%
May81.5%93.6%▲ 14.8%
June86.2%86.2%0.0%
July85.7%73.3%▼ 14.4%
August90.3%––
September93.3%––
October83.9%–in progress
November88.9%––
December92.6%––
Year-to-date average (Jan–Jul)82.3%87.8%▲ 6.6%

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
January43▼ 25.0%
February01–
March01–
April00–
May00–
June110.0%
July110.0%
August0––
September0––
October0–in progress
November1––
December1––
Year to date (Jan–Jul)67▲ 16.7%

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 97.8% 668
  • Cancelled 2.2% 15

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

On time, leg by leg

  1. PHX–SLC129 89.8%
  2. SAV–ATL110 86.1%
  3. MEM–ATL85 82.4%
  4. SLC–RDU74 86.1%
  5. GSP–DTW62 94.8%
  6. MDT–ATL50 70.8%
  7. ATL–MDT50 83.3%
  8. CLE–MSP36 83.3%

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

Legs flown under this number

10
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 80.0% 0
November 2024 29 29 93.1% 0
December 2024 44 44 70.5% 0
January 2025 54 50 70.0% 4
February 2025 44 44 75.0% 0
March 2025 35 35 85.7% 0
April 2025 13 13 92.3% 0
May 2025 27 27 81.5% 0
June 2025 30 29 86.2% 1
July 2025 29 28 85.7% 1
August 2025 31 31 90.3% 0
September 2025 30 30 93.3% 0
October 2025 31 31 83.9% 0
November 2025 28 27 88.9% 1
December 2025 28 27 92.6% 1
January 2026 30 27 92.6% 3
February 2026 28 27 96.3% 1
March 2026 30 29 82.8% 1
April 2026 30 30 90.0% 0
May 2026 31 31 93.6% 0
June 2026 30 29 86.2% 1
July 2026 31 30 73.3% 1

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