Hartsfield-Jackson Atlanta International in March 2026

72.4%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 March 2026, reporting carriers scheduled 26,669 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 72.4% left less than 15 minutes late and 72.0% reached their destination on time; 3.5% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so ATL departures were level with the national departure figure.

A year earlier, in March 2025, the airport had 26,468 departures with 77.8% leaving on time: a change of −5.4 points, with flights up 1%.

Flights arriving at ATL that month were on time 76.1% of the time (26,662 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 43%, late-arriving aircraft 27% and national aviation system 22%.

On time 72.0%
Arrived 15+ minutes late 24.2%
Cancelled 3.5%
Diverted 0.3%

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

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

Measure	Mar 2026	Mar 2025	ATL, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	72.4%	77.8%	77.1%	72.8%
Arrived on time	72.0%	77.1%	76.6%	73.2%
Cancelled	3.5%	0.7%	1.8%	2.9%
Average departure delay (late minutes only)	18.5 min	14.9 min	15.1 min	20.3 min
Scheduled departures a day	889	882	865	20,403
Scheduled departures	26,669	26,468	315,859	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	20,264	76%	74.2%	9.1 min	3.4%
F9 Frontier Airlines	1,804	7%	55.0%	31.4 min	3.7%
WN Southwest Airlines	1,386	5%	72.6%	8.4 min	1.9%
UA United Airlines	628	2%	77.4%	9.1 min	1.6%
OO SkyWest Airlines	601	2%	66.4%	28.6 min	1.5%
AA American Airlines	499	2%	80.6%	0.3 min	1.6%
NK Spirit Airlines	470	2%	42.6%	39.8 min	12.1%
OH PSA Airlines	294	1%	71.4%	22.6 min	7.1%
YX Republic Airline	266	1%	58.3%	26.5 min	7.9%
B6 JetBlue Airways	217	1%	67.3%	19.5 min	3.7%
MQ Envoy Air	156	1%	62.8%	20.5 min	5.1%
AS Alaska Airlines	84	0%	76.2%	2.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATL–MCO	Atlanta to Orlando	783	62.3%	21.6 min	4.1%
ATL–FLL	Atlanta to Fort Lauderdale	781	53.1%	29.9 min	5.9%
ATL–LGA	Atlanta to New York	674	59.9%	29.7 min	7.0%
ATL–DFW	Atlanta to Dallas/Fort Worth	587	73.9%	10.8 min	2.9%
ATL–DCA	Atlanta to Washington	585	57.9%	22.9 min	5.1%
ATL–MIA	Atlanta to Miami	571	63.0%	21.4 min	4.2%
ATL–TPA	Atlanta to Tampa	568	69.5%	15.1 min	3.5%
ATL–EWR	Atlanta to Newark	564	64.7%	18.1 min	3.0%
ATL–ORD	Atlanta to Chicago	516	54.3%	32.1 min	5.6%
ATL–DEN	Atlanta to Denver	459	75.8%	6.2 min	2.8%
ATL–PHL	Atlanta to Philadelphia	458	67.9%	15.2 min	4.1%
ATL–IAH	Atlanta to Houston	439	70.2%	11.3 min	6.4%

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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	42.6%	33.5%	195,022
Late-arriving aircraft	26.5%	39.3%	121,272
National Aviation System	22.2%	21.0%	101,475
Extreme weather	8.6%	5.9%	39,476
Security	0.2%	0.2%	712

457,957 delay minutes on 6,457 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 March 2026?

72.4% of 26,669 scheduled domestic departures left less than 15 minutes late, and 72.0% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 77.8% of 26,468 departures left on time and 0.7% were cancelled, against 72.4% and 3.5% in March 2026.

Provenance

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