Hartsfield-Jackson Atlanta International in January 2025

73.5%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In January 2025, reporting carriers scheduled 23,881 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 73.5% left less than 15 minutes late and 72.6% reached their destination on time; 5.2% were cancelled.

Nationally that month, 79.3% of flights departed on time and 78.6% arrived on time, so ATL departures were 5.8 points below the national departure figure.

A year earlier, in January 2024, the airport had 26,315 departures with 78.4% leaving on time: a change of −4.9 points, with flights down 9%.

Flights arriving at ATL that month were on time 75.7% of the time (23,881 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 38%, late-arriving aircraft 22% and national aviation system 20%.

On time 72.6%
Arrived 15+ minutes late 22.0%
Cancelled 5.2%
Diverted 0.2%

Every scheduled departure from ATL in January 2025, judged by arrival at the destination.

January 2025 against a year earlier, the airport's year and the nation

Measure	Jan 2025	Jan 2024	ATL, 12 months to Jul 2026	All reported flights, Jan 2025
Departed on time	73.5%	78.4%	77.1%	79.3%
Arrived on time	72.6%	78.0%	76.6%	78.6%
Cancelled	5.2%	1.0%	1.8%	3.0%
Average departure delay (late minutes only)	17.4 min	14.9 min	15.1 min	14.0 min
Scheduled departures a day	796	877	865	17,992
Scheduled departures	23,881	26,315	315,859	539,747

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	17,468	73%	73.1%	11.6 min	4.8%
WN Southwest Airlines	2,293	10%	78.0%	2.5 min	5.2%
F9 Frontier Airlines	906	4%	62.1%	23.5 min	7.1%
OO SkyWest Airlines	741	3%	61.3%	28.6 min	8.1%
NK Spirit Airlines	700	3%	68.1%	8.1 min	8.4%
UA United Airlines	567	2%	71.6%	12.8 min	5.6%
AA American Airlines	485	2%	73.2%	18.3 min	5.8%
OH PSA Airlines	290	1%	68.6%	13.4 min	10.3%
B6 JetBlue Airways	158	1%	68.4%	23.2 min	5.7%
MQ Envoy Air	101	0%	84.2%	-2.2 min	6.9%
YX Republic Airline	88	0%	78.4%	-3.4 min	6.8%
AS Alaska Airlines	84	0%	61.9%	14.2 min	3.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATL–MCO	Atlanta to Orlando	690	68.6%	18.5 min	3.8%
ATL–DCA	Atlanta to Washington	591	66.8%	9.6 min	9.5%
ATL–FLL	Atlanta to Fort Lauderdale	580	67.8%	15.1 min	4.7%
ATL–LGA	Atlanta to New York	576	69.3%	11.5 min	3.8%
ATL–MIA	Atlanta to Miami	544	70.4%	20.5 min	4.0%
ATL–DFW	Atlanta to Dallas/Fort Worth	535	65.2%	18.6 min	8.4%
ATL–EWR	Atlanta to Newark	515	67.6%	17.2 min	5.0%
ATL–TPA	Atlanta to Tampa	507	68.2%	14.1 min	4.9%
ATL–BWI	Atlanta to Baltimore	469	73.3%	9.0 min	5.5%
ATL–DEN	Atlanta to Denver	440	73.0%	16.2 min	4.3%
ATL–LAX	Atlanta to Los Angeles	435	71.5%	14.1 min	3.4%
ATL–ORD	Atlanta to Chicago	431	75.4%	7.5 min	5.1%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), January 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2025	Minutes
Air carrier	37.8%	36.2%	150,833
Late-arriving aircraft	22.0%	34.7%	87,729
National Aviation System	20.3%	19.9%	81,126
Extreme weather	19.7%	9.1%	78,786
Security	0.2%	0.2%	689

399,163 delay minutes on 5,247 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left ATL on time in January 2025?

73.5% of 23,881 scheduled domestic departures left less than 15 minutes late, and 72.6% reached their destination on time. The national figures that month were 79.3% and 78.6%.

How does that compare with a year earlier?

In January 2024, 78.4% of 26,315 departures left on time and 1.0% were cancelled, against 73.5% and 5.2% in January 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ATL · methodology · corrections.