BOS → SLC

DL445

DL445 (Delta Air Lines) flies Boston to Salt Lake City. Of 634 departures recorded from October 2024 to July 2026, 74.2% left on time, according to the US BTS.

Recorded departures by month

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January3121▼ 32.3%
February2821▼ 25.0%
March3130▼ 3.2%
April30300.0%
May31310.0%
June30300.0%
July30300.0%
August31––
September30––
October30–in progress
November29––
December31––
Year to date (Jan–Jul)211193▼ 8.5%

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
January76.7%84.2%▲ 9.8%
February75.0%80.0%▲ 6.7%
March74.2%86.7%▲ 16.8%
April76.7%86.7%▲ 13.0%
May64.5%74.2%▲ 15.0%
June63.3%76.7%▲ 21.1%
July66.7%66.7%0.0%
August77.4%––
September53.3%––
October56.7%–in progress
November89.7%––
December73.3%––
Year-to-date average (Jan–Jul)71.0%79.3%▲ 11.7%

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
January12▲ 100.0%
February01–
March00–
April00–
May00–
June00–
July00–
August0––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)13▲ 200.0%

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.

Cancellation share

  • Not cancelled 99.2% 629
  • Cancelled 0.8% 5

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

Legs flown under this number

1
RoutesDistance (km)Avg delay On timeDepartures
BOS SLC Boston Logan International Airport – Salt Lake City International Airport 3,380 14.4 min 74.2% 634
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 95.0% 0
November 2024 28 28 85.7% 0
December 2024 31 31 64.5% 0
January 2025 31 30 76.7% 1
February 2025 28 28 75.0% 0
March 2025 31 31 74.2% 0
April 2025 30 30 76.7% 0
May 2025 31 31 64.5% 0
June 2025 30 30 63.3% 0
July 2025 30 30 66.7% 0
August 2025 31 31 77.4% 0
September 2025 30 30 53.3% 0
October 2025 30 30 56.7% 0
November 2025 29 29 89.7% 0
December 2025 31 30 73.3% 1
January 2026 21 19 84.2% 2
February 2026 21 20 80.0% 1
March 2026 30 30 86.7% 0
April 2026 30 30 86.7% 0
May 2026 31 31 74.2% 0
June 2026 30 30 76.7% 0
July 2026 30 30 66.7% 0

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