Miami International in January 2024

67.4%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 January 2024, reporting carriers scheduled 10,214 domestic departures from Miami International (MIA). 67.4% left less than 15 minutes late and 66.1% reached their destination on time; 2.5% were cancelled.

Nationally that month, 74.0% of flights departed on time and 72.9% arrived on time, so MIA departures were 6.6 points below the national departure figure.

Flights arriving at MIA that month were on time 67.4% of the time (10,210 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 33% and national aviation system 20%.

On time 66.1%
Arrived 15+ minutes late 30.9%
Cancelled 2.5%
Diverted 0.4%

Every scheduled departure from MIA in January 2024, judged by arrival at the destination.

January 2024 against a year earlier, the airport's year and the nation

Measure	Jan 2024	Year earlier	MIA, 12 months to Jul 2026	All reported flights, Jan 2024
Departed on time	67.4%	—	72.9%	74.0%
Arrived on time	66.1%	—	72.3%	72.9%
Cancelled	2.5%	—	1.6%	3.7%
Average departure delay (late minutes only)	22.4 min	—	19.7 min	18.7 min
Scheduled departures a day	341	—	305	18,242
Scheduled departures	10,214	—	111,186	547,271

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	5,284	52%	63.6%	20.9 min	1.2%
MQ Envoy Air	1,404	14%	74.6%	4.4 min	2.6%
DL Delta Air Lines	1,004	10%	67.9%	14.3 min	0.4%
UA United Airlines	694	7%	63.4%	10.6 min	14.3%
NK Spirit Airlines	607	6%	68.2%	14.1 min	1.2%
WN Southwest Airlines	577	6%	64.3%	15.4 min	2.6%
F9 Frontier Airlines	287	3%	70.4%	23.9 min	1.7%
B6 JetBlue Airways	215	2%	69.8%	19.0 min	1.4%
YX Republic Airline	73	1%	68.5%	21.4 min	2.7%
AS Alaska Airlines	62	1%	51.6%	9.9 min	33.9%
9E Endeavor Air	7	0%	42.9%	31.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MIA–ATL	Miami to Atlanta	635	66.1%	17.8 min	0.3%
MIA–LGA	Miami to New York	524	68.1%	12.1 min	2.1%
MIA–JFK	Miami to New York	471	72.8%	11.1 min	1.3%
MIA–DFW	Miami to Dallas/Fort Worth	445	60.0%	27.9 min	1.1%
MIA–EWR	Miami to Newark	430	64.7%	9.0 min	11.6%
MIA–ORD	Miami to Chicago	424	68.6%	16.0 min	3.3%
MIA–LAX	Miami to Los Angeles	361	67.9%	16.7 min	0.0%
MIA–BOS	Miami to Boston	352	64.5%	17.6 min	1.4%
MIA–MCO	Miami to Orlando	341	63.9%	22.6 min	1.2%
MIA–DCA	Miami to Washington	338	66.0%	12.2 min	2.1%
MIA–CLT	Miami to Charlotte	277	71.5%	16.9 min	0.7%
MIA–IAH	Miami to Houston	263	53.6%	22.1 min	8.7%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), January 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2024	Minutes
Air carrier	33.1%	32.6%	72,074
Late-arriving aircraft	42.1%	39.0%	91,469
National Aviation System	20.3%	17.9%	44,213
Extreme weather	4.2%	10.3%	9,176
Security	0.3%	0.2%	556

217,488 delay minutes on 3,161 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 January 2024?

67.4% of 10,214 scheduled domestic departures left less than 15 minutes late, and 66.1% reached their destination on time. The national figures that month were 74.0% and 72.9%.

How does that compare with a year earlier?

January 2023 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2024; 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.