Miami International in March 2025

74.4%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 2025, reporting carriers scheduled 10,920 domestic departures from Miami International (MIA). 74.4% left less than 15 minutes late and 71.1% reached their destination on time; 1.3% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so MIA departures were 5.5 points below the national departure figure.

A year earlier, in March 2024, the airport had 10,533 departures with 66.9% leaving on time: a change of +7.5 points, with flights up 4%.

Flights arriving at MIA that month were on time 77.1% of the time (10,912 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 37%, air carrier 32% and national aviation system 24%.

On time 71.1%
Arrived 15+ minutes late 27.4%
Cancelled 1.3%
Diverted 0.3%

Every scheduled departure from MIA 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	MIA, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	74.4%	66.9%	72.9%	79.9%
Arrived on time	71.1%	64.6%	72.3%	79.3%
Cancelled	1.3%	2.1%	1.6%	1.2%
Average departure delay (late minutes only)	20.7 min	28.7 min	19.7 min	14.9 min
Scheduled departures a day	364	351	305	20,029
Scheduled departures	10,920	10,533	111,186	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	5,689	52%	68.8%	15.9 min	1.3%
MQ Envoy Air	1,508	14%	79.6%	0.7 min	1.9%
DL Delta Air Lines	1,003	9%	69.5%	23.4 min	0.8%
UA United Airlines	726	7%	71.9%	17.2 min	0.4%
WN Southwest Airlines	628	6%	69.9%	20.7 min	0.6%
NK Spirit Airlines	526	5%	70.7%	15.6 min	1.1%
F9 Frontier Airlines	450	4%	77.6%	6.4 min	2.7%
B6 JetBlue Airways	189	2%	65.6%	31.1 min	2.6%
YX Republic Airline	139	1%	72.7%	30.4 min	0.7%
AS Alaska Airlines	62	1%	66.1%	13.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MIA–ATL	Miami to Atlanta	592	68.8%	24.0 min	1.0%
MIA–LGA	Miami to New York	555	66.8%	18.8 min	1.3%
MIA–JFK	Miami to New York	483	69.4%	19.9 min	1.2%
MIA–ORD	Miami to Chicago	435	75.6%	3.3 min	1.1%
MIA–DFW	Miami to Dallas/Fort Worth	428	67.5%	17.7 min	1.6%
MIA–EWR	Miami to Newark	419	61.8%	22.1 min	1.2%
MIA–BOS	Miami to Boston	380	68.7%	18.2 min	1.8%
MIA–DCA	Miami to Washington	372	72.6%	9.9 min	1.6%
MIA–CLT	Miami to Charlotte	354	76.8%	8.6 min	0.8%
MIA–MCO	Miami to Orlando	341	72.1%	14.2 min	2.3%
MIA–IAH	Miami to Houston	340	70.3%	20.0 min	1.5%
MIA–DEN	Miami to Denver	287	74.2%	16.4 min	0.7%

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	32.0%	33.0%	73,248
Late-arriving aircraft	37.1%	39.2%	85,031
National Aviation System	24.4%	21.9%	55,942
Extreme weather	6.4%	5.9%	14,538
Security	0.1%	0.1%	158

228,917 delay minutes on 2,989 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 MIA on time in March 2025?

74.4% of 10,920 scheduled domestic departures left less than 15 minutes late, and 71.1% 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, 66.9% of 10,533 departures left on time and 2.1% were cancelled, against 74.4% and 1.3% 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 MIA · methodology · corrections.