Hartsfield-Jackson Atlanta International in April 2026

82.1%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 2026, reporting carriers scheduled 26,607 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 82.1% left less than 15 minutes late and 81.1% reached their destination on time; 1.0% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so ATL departures were 3.0 points above the national departure figure.

A year earlier, in April 2025, the airport had 25,490 departures with 77.7% leaving on time: a change of +4.4 points, with flights up 4%.

Flights arriving at ATL that month were on time 85.1% of the time (26,599 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 31% and national aviation system 21%.

On time 81.1%
Arrived 15+ minutes late 17.7%
Cancelled 1.0%
Diverted 0.2%

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

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

Measure	Apr 2026	Apr 2025	ATL, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	82.1%	77.7%	77.1%	79.1%
Arrived on time	81.1%	76.3%	76.6%	78.9%
Cancelled	1.0%	0.9%	1.8%	0.9%
Average departure delay (late minutes only)	10.9 min	15.8 min	15.1 min	14.5 min
Scheduled departures a day	887	850	865	19,931
Scheduled departures	26,607	25,490	315,859	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	20,246	76%	82.7%	1.7 min	1.1%
F9 Frontier Airlines	1,885	7%	68.0%	13.3 min	0.8%
WN Southwest Airlines	1,302	5%	80.4%	2.8 min	0.2%
UA United Airlines	669	3%	84.3%	5.1 min	0.6%
AA American Airlines	596	2%	77.9%	15.7 min	0.5%
OO SkyWest Airlines	547	2%	82.1%	4.0 min	0.5%
NK Spirit Airlines	426	2%	61.3%	22.4 min	2.8%
OH PSA Airlines	281	1%	85.1%	5.5 min	0.0%
YX Republic Airline	275	1%	79.3%	1.1 min	0.7%
B6 JetBlue Airways	218	1%	80.7%	8.5 min	0.0%
AS Alaska Airlines	86	0%	86.0%	0.6 min	2.3%
MQ Envoy Air	76	0%	72.4%	13.9 min	1.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATL–MCO	Atlanta to Orlando	760	76.8%	9.4 min	0.5%
ATL–FLL	Atlanta to Fort Lauderdale	713	73.4%	12.6 min	1.0%
ATL–LGA	Atlanta to New York	640	75.0%	7.2 min	0.6%
ATL–MIA	Atlanta to Miami	573	74.2%	12.9 min	0.2%
ATL–DCA	Atlanta to Washington	564	71.8%	12.5 min	0.4%
ATL–DFW	Atlanta to Dallas/Fort Worth	561	76.1%	10.6 min	0.5%
ATL–TPA	Atlanta to Tampa	557	79.5%	5.9 min	0.5%
ATL–ORD	Atlanta to Chicago	554	64.3%	29.2 min	3.1%
ATL–EWR	Atlanta to Newark	526	81.6%	1.1 min	1.3%
ATL–PHL	Atlanta to Philadelphia	491	78.0%	7.5 min	1.2%
ATL–IAH	Atlanta to Houston	469	80.0%	3.6 min	0.4%
ATL–BOS	Atlanta to Boston	444	75.9%	6.4 min	0.2%

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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	45.1%	33.5%	121,820
Late-arriving aircraft	30.5%	40.4%	82,224
National Aviation System	20.6%	21.0%	55,566
Extreme weather	3.8%	5.0%	10,248
Security	0.1%	0.1%	160

270,018 delay minutes on 4,710 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 2026?

82.1% of 26,607 scheduled domestic departures left less than 15 minutes late, and 81.1% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 77.7% of 25,490 departures left on time and 0.9% were cancelled, against 82.1% and 1.0% in April 2026.

Provenance

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