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Airport Reliability

ATL · Atlanta

Hartsfield–Jackson Atlanta International Airport

78%
Departures within 15 minutes
13 min
Average departure delay
82%
Arrivals within 15 minutes
1.8%
Departures cancelled

Based on 350,860 departures and 350,839 arrivals. Data through May 2026.

What the data says

Morning-you made the right choice.

Departures from ATL departing between 6–9 AM arrived on time 89% of the time, versus 69% between 6–9 PM.

Sunday scaries are real for this one.

Departures from ATL arrived on time 83% of the time on Wednesdays. On Sundays: 73%.

When ATL gets messy

On-time by departure window
  • 3–6 AM84%(1561 flights)
  • 6–9 AM89%(47624 flights)
  • 9 AM–12 PM84%(69475 flights)
  • 12–3 PM80%(54860 flights)
  • 3–6 PM72%(66120 flights)
  • 6–9 PM69%(55139 flights)
  • 9 PM–12 AM73%(48789 flights)
On-time by weekday
  • Mon75%(51606 flights)
  • Tue79%(47910 flights)
  • Wed83%(47896 flights)
  • Thu79%(51361 flights)
  • Fri77%(51026 flights)
  • Sat78%(42527 flights)
  • Sun73%(51242 flights)
On-time trend by month
78%
May

Jun 66% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%29596
July 202570%30512
August 202579%29590
September 202587%28191
October 202583%30022
November 202581%27457
December 202574%28344
January 202679%25800
February 202681%25265
March 202675%28958
April 202682%29470
May 202678%30363

Airlines departing ATL

Busiest routes from ATL

Based on 350,860 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.