Hartsfield-Jackson Atlanta International in June 2025

63.3%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 June 2025, reporting carriers scheduled 27,728 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 63.3% left less than 15 minutes late and 62.5% reached their destination on time; 2.5% were cancelled.

Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so ATL departures were 8.1 points below the national departure figure.

A year earlier, in June 2024, the airport had 29,361 departures with 78.5% leaving on time: a change of −15.2 points, with flights down 6%.

Flights arriving at ATL that month were on time 70.9% of the time (27,724 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, late-arriving aircraft 30% and national aviation system 19%.

On time 62.5%
Arrived 15+ minutes late 34.6%
Cancelled 2.5%
Diverted 0.4%

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

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

Measure	Jun 2025	Jun 2024	ATL, 12 months to Jul 2026	All reported flights, Jun 2025
Departed on time	63.3%	78.5%	77.1%	71.4%
Arrived on time	62.5%	79.2%	76.6%	70.3%
Cancelled	2.5%	0.5%	1.8%	1.6%
Average departure delay (late minutes only)	26.6 min	13.8 min	15.1 min	22.1 min
Scheduled departures a day	924	979	865	20,386
Scheduled departures	27,728	29,361	315,859	611,575

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	21,179	76%	63.0%	20.4 min	2.5%
WN Southwest Airlines	1,621	6%	65.1%	24.3 min	0.9%
F9 Frontier Airlines	1,392	5%	41.6%	46.4 min	5.8%
NK Spirit Airlines	819	3%	63.4%	21.8 min	1.3%
OO SkyWest Airlines	684	2%	63.7%	33.0 min	0.7%
AA American Airlines	657	2%	64.7%	36.0 min	2.7%
UA United Airlines	589	2%	74.2%	19.8 min	1.0%
OH PSA Airlines	258	1%	65.5%	23.8 min	8.1%
B6 JetBlue Airways	176	1%	68.8%	27.1 min	2.3%
AS Alaska Airlines	150	1%	64.0%	16.9 min	0.7%
YX Republic Airline	106	0%	76.4%	7.7 min	4.7%
MQ Envoy Air	97	0%	64.9%	10.6 min	7.2%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATL–MCO	Atlanta to Orlando	684	51.2%	38.9 min	1.6%
ATL–LGA	Atlanta to New York	599	58.4%	29.3 min	2.8%
ATL–DFW	Atlanta to Dallas/Fort Worth	578	54.8%	29.8 min	3.5%
ATL–ORD	Atlanta to Chicago	568	66.4%	26.9 min	1.8%
ATL–DCA	Atlanta to Washington	567	56.4%	34.2 min	4.8%
ATL–TPA	Atlanta to Tampa	531	55.7%	32.6 min	1.5%
ATL–FLL	Atlanta to Fort Lauderdale	525	53.3%	31.0 min	1.9%
ATL–PHL	Atlanta to Philadelphia	514	54.1%	32.3 min	3.3%
ATL–LAX	Atlanta to Los Angeles	509	68.0%	18.2 min	2.6%
ATL–DEN	Atlanta to Denver	508	59.8%	23.6 min	1.2%
ATL–MIA	Atlanta to Miami	506	58.5%	24.9 min	2.6%
ATL–BWI	Atlanta to Baltimore	496	52.6%	36.6 min	4.2%

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), June 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2025	Minutes
Air carrier	41.4%	31.6%	296,461
Late-arriving aircraft	30.0%	40.6%	214,704
National Aviation System	18.8%	20.9%	135,007
Extreme weather	9.7%	6.9%	69,642
Security	0.1%	0.2%	620

716,434 delay minutes on 9,596 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 June 2025?

63.3% of 27,728 scheduled domestic departures left less than 15 minutes late, and 62.5% reached their destination on time. The national figures that month were 71.4% and 70.3%.

How does that compare with a year earlier?

In June 2024, 78.5% of 29,361 departures left on time and 0.5% were cancelled, against 63.3% and 2.5% in June 2025.

Provenance

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