Hartsfield-Jackson Atlanta International in April 2025

77.7%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 April 2025, reporting carriers scheduled 25,490 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 77.7% left less than 15 minutes late and 76.3% reached their destination on time; 0.9% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so ATL departures were 2.9 points below the national departure figure.

A year earlier, in April 2024, the airport had 28,419 departures with 82.1% leaving on time: a change of −4.4 points, with flights down 10%.

Flights arriving at ATL that month were on time 81.0% of the time (25,494 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 39%, late-arriving aircraft 30% and national aviation system 23%.

On time 76.3%
Arrived 15+ minutes late 22.6%
Cancelled 0.9%
Diverted 0.2%

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

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

Measure	Apr 2025	Apr 2024	ATL, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	77.7%	82.1%	77.1%	80.6%
Arrived on time	76.3%	81.1%	76.6%	79.5%
Cancelled	0.9%	0.2%	1.8%	0.8%
Average departure delay (late minutes only)	15.8 min	11.4 min	15.1 min	14.1 min
Scheduled departures a day	850	947	865	19,465
Scheduled departures	25,490	28,419	315,859	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	19,215	75%	77.2%	9.2 min	0.8%
WN Southwest Airlines	1,768	7%	77.9%	8.0 min	0.5%
F9 Frontier Airlines	1,083	4%	59.4%	34.8 min	2.7%
NK Spirit Airlines	811	3%	78.1%	12.0 min	0.1%
OO SkyWest Airlines	683	3%	77.2%	12.9 min	0.4%
AA American Airlines	583	2%	72.9%	14.5 min	2.6%
UA United Airlines	564	2%	77.3%	15.6 min	0.7%
OH PSA Airlines	306	1%	73.5%	10.3 min	1.0%
B6 JetBlue Airways	181	1%	86.2%	3.4 min	0.0%
YX Republic Airline	159	1%	79.2%	6.3 min	0.0%
AS Alaska Airlines	120	0%	50.0%	23.8 min	0.8%
MQ Envoy Air	17	0%	58.8%	13.4 min	17.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATL–MCO	Atlanta to Orlando	720	73.1%	13.4 min	1.3%
ATL–DCA	Atlanta to Washington	579	70.1%	11.3 min	1.4%
ATL–LGA	Atlanta to New York	578	75.4%	9.0 min	1.0%
ATL–MIA	Atlanta to Miami	563	74.6%	12.4 min	1.4%
ATL–DFW	Atlanta to Dallas/Fort Worth	541	65.4%	25.5 min	2.6%
ATL–FLL	Atlanta to Fort Lauderdale	532	69.7%	14.2 min	1.7%
ATL–TPA	Atlanta to Tampa	521	72.4%	18.9 min	1.9%
ATL–ORD	Atlanta to Chicago	500	72.8%	13.5 min	1.6%
ATL–EWR	Atlanta to Newark	481	50.7%	46.1 min	1.9%
ATL–PHL	Atlanta to Philadelphia	470	73.4%	16.8 min	0.4%
ATL–BOS	Atlanta to Boston	464	76.9%	6.3 min	1.1%
ATL–BWI	Atlanta to Baltimore	459	72.8%	16.1 min	0.9%

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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	38.9%	32.7%	155,940
Late-arriving aircraft	30.3%	39.4%	121,344
National Aviation System	23.0%	22.2%	92,137
Extreme weather	7.7%	5.5%	30,756
Security	0.1%	0.2%	483

400,660 delay minutes on 5,770 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 April 2025?

77.7% of 25,490 scheduled domestic departures left less than 15 minutes late, and 76.3% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 82.1% of 28,419 departures left on time and 0.2% were cancelled, against 77.7% and 0.9% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.