DL904

DL904 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Atlanta to Sacramento. Of 1,284 departures recorded from October 2024 to July 2026, 89.1% 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
January62620.0%
February56560.0%
March62620.0%
April60600.0%
May62620.0%
June60600.0%
July62620.0%
August62––
September60––
October62–in progress
November59––
December62––
Year to date (Jan–Jul)4244240.0%

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
January76.3%94.9%▲ 24.5%
February96.4%87.5%▼ 9.3%
March93.4%86.2%▼ 7.7%
April85.0%93.1%▲ 9.5%
May96.6%91.9%▼ 4.8%
June86.7%90.0%▲ 3.8%
July90.3%85.5%▼ 5.4%
August82.3%––
September98.3%––
October90.3%–in progress
November86.0%––
December86.2%––
Year-to-date average (Jan–Jul)89.2%89.9%▲ 0.7%

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
January330.0%
February00–
March14▲ 300.0%
April02–
May30▼ 100.0%
June00–
July00–
August0––
September1––
October0–in progress
November2––
December4––
Year to date (Jan–Jul)79▲ 28.6%

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% 1,261
  • Cancelled 1.8% 23

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

On time, leg by leg

  1. ATL–SMF658 89.4%
  2. SMF–ATL626 88.7%

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

Legs flown under this number

2
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 90.0% 0
November 2024 49 49 83.7% 0
December 2024 62 62 88.7% 0
January 2025 62 59 76.3% 3
February 2025 56 56 96.4% 0
March 2025 62 61 93.4% 1
April 2025 60 60 85.0% 0
May 2025 62 59 96.6% 3
June 2025 60 60 86.7% 0
July 2025 62 62 90.3% 0
August 2025 62 62 82.3% 0
September 2025 60 59 98.3% 1
October 2025 62 62 90.3% 0
November 2025 59 57 86.0% 2
December 2025 62 58 86.2% 4
January 2026 62 59 94.9% 3
February 2026 56 56 87.5% 0
March 2026 62 58 86.2% 4
April 2026 60 58 93.1% 2
May 2026 62 62 91.9% 0
June 2026 60 60 90.0% 0
July 2026 62 62 85.5% 0

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