ATL → DEN

F91449

F91449 (Frontier Airlines) flies Atlanta to Denver. Of 410 departures recorded from October 2024 to July 2026, 56.3% left on time, according to the US BTS.

Recorded departures by month

Months without data are left blank.

The most recent periods16 periods
PeriodDepartures 2025Departures 2026Change vs last year
January14––
February231▼ 95.7%
March311▼ 96.8%
April30––
May2919▼ 34.5%
June2529▲ 16.0%
July3031▲ 3.3%
August31––
September22––
October30–in progress
November15––
December–––

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

Months without data are left blank.

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

The most recent periods16 periods
PeriodOn time 2025On time 2026Change vs last year
January53.9%––
February60.9%100.0%▲ 64.3%
March74.2%100.0%▲ 34.8%
April60.0%––
May41.4%52.6%▲ 27.2%
June8.3%78.6%▲ 843.2%
July40.0%50.0%▲ 25.0%
August66.7%––
September50.0%––
October63.3%–in progress
November66.7%––
December–––

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

Months without data are left blank.

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined

Months without data are left blank.

The most recent periods16 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January1––
February00–
March00–
April0––
May00–
June110.0%
July01–
August1––
September0––
October0–in progress
November0––
December–––

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 98.8% 405
  • Cancelled 1.2% 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
ATL DEN Hartsfield Jackson Atlanta International Airport – Denver International Airport 1,927 38.3 min 56.3% 410
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 19 19 73.7% 0
November 2024 23 23 60.9% 0
December 2024 7 7 42.9% 0
January 2025 14 13 53.9% 1
February 2025 23 23 60.9% 0
March 2025 31 31 74.2% 0
April 2025 30 30 60.0% 0
May 2025 29 29 41.4% 0
June 2025 25 24 8.3% 1
July 2025 30 30 40.0% 0
August 2025 31 30 66.7% 1
September 2025 22 22 50.0% 0
October 2025 30 30 63.3% 0
November 2025 15 15 66.7% 0
February 2026 1 1 100.0% 0
March 2026 1 1 100.0% 0
May 2026 19 19 52.6% 0
June 2026 29 28 78.6% 1
July 2026 31 30 50.0% 1

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