Hartsfield-Jackson Atlanta International in March 2025

77.8%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 2025, reporting carriers scheduled 26,468 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 77.8% left less than 15 minutes late and 77.1% reached their destination on time; 0.7% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so ATL departures were 2.1 points below the national departure figure.

A year earlier, in March 2024, the airport had 28,459 departures with 80.9% leaving on time: a change of −3.1 points, with flights down 7%.

Flights arriving at ATL that month were on time 82.2% of the time (26,455 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 44%, late-arriving aircraft 30% and national aviation system 21%.

On time 77.1%
Arrived 15+ minutes late 21.9%
Cancelled 0.7%
Diverted 0.3%

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

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

Measure	Mar 2025	Mar 2024	ATL, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	77.8%	80.9%	77.1%	79.9%
Arrived on time	77.1%	81.2%	76.6%	79.3%
Cancelled	0.7%	0.3%	1.8%	1.2%
Average departure delay (late minutes only)	14.9 min	11.6 min	15.1 min	14.9 min
Scheduled departures a day	882	949	865	20,029
Scheduled departures	26,468	28,459	315,859	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	19,525	74%	77.0%	8.1 min	0.6%
WN Southwest Airlines	2,426	9%	82.4%	3.5 min	0.6%
F9 Frontier Airlines	1,070	4%	64.7%	24.6 min	2.3%
NK Spirit Airlines	843	3%	75.3%	8.2 min	0.7%
OO SkyWest Airlines	720	3%	75.3%	14.4 min	1.3%
UA United Airlines	563	2%	84.4%	4.7 min	0.7%
AA American Airlines	544	2%	80.0%	7.5 min	2.0%
OH PSA Airlines	320	1%	75.0%	8.7 min	3.4%
B6 JetBlue Airways	160	1%	83.1%	3.0 min	0.6%
MQ Envoy Air	100	0%	73.0%	5.8 min	2.0%
YX Republic Airline	99	0%	86.9%	6.9 min	0.0%
AS Alaska Airlines	98	0%	67.3%	13.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATL–MCO	Atlanta to Orlando	759	71.5%	17.8 min	0.8%
ATL–FLL	Atlanta to Fort Lauderdale	599	65.9%	15.8 min	1.5%
ATL–MIA	Atlanta to Miami	593	68.5%	14.0 min	1.2%
ATL–DCA	Atlanta to Washington	586	69.3%	11.5 min	0.9%
ATL–LGA	Atlanta to New York	579	76.0%	6.8 min	1.0%
ATL–TPA	Atlanta to Tampa	569	69.2%	17.7 min	1.1%
ATL–DFW	Atlanta to Dallas/Fort Worth	560	68.9%	16.2 min	2.3%
ATL–EWR	Atlanta to Newark	523	70.0%	17.8 min	1.3%
ATL–BWI	Atlanta to Baltimore	476	75.6%	13.8 min	0.8%
ATL–ORD	Atlanta to Chicago	476	77.7%	10.8 min	0.8%
ATL–PHL	Atlanta to Philadelphia	474	75.3%	11.4 min	1.5%
ATL–DEN	Atlanta to Denver	446	79.1%	4.9 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), March 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2025	Minutes
Air carrier	43.6%	33.0%	163,596
Late-arriving aircraft	30.3%	39.2%	113,841
National Aviation System	21.4%	21.9%	80,336
Extreme weather	4.5%	5.9%	16,995
Security	0.1%	0.1%	459

375,227 delay minutes on 5,791 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 2025?

77.8% of 26,468 scheduled domestic departures left less than 15 minutes late, and 77.1% reached their destination on time. The national figures that month were 79.9% and 79.3%.

How does that compare with a year earlier?

In March 2024, 80.9% of 28,459 departures left on time and 0.3% were cancelled, against 77.8% and 0.7% in March 2025.

Provenance

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