Hartsfield-Jackson Atlanta International in July 2026

64.9%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 July 2026, reporting carriers scheduled 28,068 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 64.9% left less than 15 minutes late and 64.6% reached their destination on time; 2.4% were cancelled.

Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so ATL departures were 3.9 points below the national departure figure.

A year earlier, in July 2025, the airport had 28,551 departures with 67.9% leaving on time: a change of −3.0 points, with flights down 2%.

Flights arriving at ATL that month were on time 69.5% of the time (28,064 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 37%, late-arriving aircraft 37% and national aviation system 20%.

On time 64.6%
Arrived 15+ minutes late 32.5%
Cancelled 2.4%
Diverted 0.5%

Every scheduled departure from ATL in July 2026, judged by arrival at the destination.

July 2026 against a year earlier, the airport's year and the nation

Measure	Jul 2026	Jul 2025	ATL, 12 months to Jul 2026	All reported flights, Jul 2026
Departed on time	64.9%	67.9%	77.1%	68.8%
Arrived on time	64.6%	67.4%	76.6%	69.4%
Cancelled	2.4%	1.6%	1.8%	2.6%
Average departure delay (late minutes only)	27.2 min	23.7 min	15.1 min	24.1 min
Scheduled departures a day	936	952	865	21,066
Scheduled departures	28,068	28,551	315,859	631,970

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	21,774	78%	66.5%	17.7 min	2.0%
F9 Frontier Airlines	1,975	7%	49.5%	38.9 min	5.1%
WN Southwest Airlines	1,353	5%	62.7%	23.4 min	0.7%
UA United Airlines	716	3%	69.1%	17.2 min	3.6%
AA American Airlines	706	3%	61.9%	41.3 min	2.0%
OO SkyWest Airlines	508	2%	63.2%	41.4 min	2.0%
OH PSA Airlines	311	1%	57.9%	37.6 min	9.0%
B6 JetBlue Airways	306	1%	49.0%	41.8 min	10.1%
YX Republic Airline	246	1%	51.2%	42.6 min	11.0%
AS Alaska Airlines	115	0%	72.2%	1.4 min	1.7%
MQ Envoy Air	58	0%	74.1%	7.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATL–MCO	Atlanta to Orlando	694	54.5%	37.5 min	2.0%
ATL–LGA	Atlanta to New York	689	50.9%	32.9 min	10.6%
ATL–ORD	Atlanta to Chicago	604	65.4%	24.5 min	3.3%
ATL–FLL	Atlanta to Fort Lauderdale	602	60.3%	24.8 min	3.5%
ATL–DFW	Atlanta to Dallas/Fort Worth	581	60.9%	35.9 min	0.9%
ATL–DCA	Atlanta to Washington	570	48.8%	40.1 min	6.0%
ATL–PHL	Atlanta to Philadelphia	564	55.5%	38.4 min	7.3%
ATL–MIA	Atlanta to Miami	558	60.8%	29.0 min	3.4%
ATL–TPA	Atlanta to Tampa	545	57.8%	30.8 min	1.7%
ATL–DEN	Atlanta to Denver	532	74.6%	9.7 min	1.5%
ATL–EWR	Atlanta to Newark	519	50.1%	42.0 min	9.2%
ATL–BWI	Atlanta to Baltimore	498	55.6%	28.7 min	5.0%

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), July 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2026	Minutes
Air carrier	37.3%	31.7%	268,065
Late-arriving aircraft	36.6%	41.8%	263,191
National Aviation System	19.8%	19.9%	142,646
Extreme weather	6.2%	6.5%	44,369
Security	0.1%	0.1%	512

718,783 delay minutes on 9,118 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 July 2026?

64.9% of 28,068 scheduled domestic departures left less than 15 minutes late, and 64.6% reached their destination on time. The national figures that month were 68.8% and 69.4%.

How does that compare with a year earlier?

In July 2025, 67.9% of 28,551 departures left on time and 1.6% were cancelled, against 64.9% and 2.4% in July 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2026; 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.