Miami International in July 2024

62.8%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 July 2024, reporting carriers scheduled 8,733 domestic departures from Miami International (MIA). 62.8% left less than 15 minutes late and 62.7% reached their destination on time; 2.1% were cancelled.

Nationally that month, 68.5% of flights departed on time and 68.1% arrived on time, so MIA departures were 5.7 points below the national departure figure.

Flights arriving at MIA that month were on time 68.1% of the time (8,732 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, air carrier 35% and national aviation system 17%.

On time 62.7%
Arrived 15+ minutes late 34.8%
Cancelled 2.1%
Diverted 0.5%

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

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

Measure	Jul 2024	Year earlier	MIA, 12 months to Jul 2026	All reported flights, Jul 2024
Departed on time	62.8%	—	72.9%	68.5%
Arrived on time	62.7%	—	72.3%	68.1%
Cancelled	2.1%	—	1.6%	2.9%
Average departure delay (late minutes only)	32.4 min	—	19.7 min	24.9 min
Scheduled departures a day	291	—	305	21,154
Scheduled departures	8,733	—	111,186	634,613

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	4,953	57%	60.4%	27.1 min	1.5%
DL Delta Air Lines	957	11%	62.6%	33.6 min	5.7%
MQ Envoy Air	939	11%	68.3%	11.7 min	0.3%
WN Southwest Airlines	498	6%	65.7%	17.6 min	1.2%
NK Spirit Airlines	464	5%	70.3%	11.9 min	3.4%
UA United Airlines	410	5%	62.9%	24.7 min	3.9%
F9 Frontier Airlines	372	4%	63.7%	27.4 min	3.2%
B6 JetBlue Airways	93	1%	60.2%	24.3 min	3.2%
AS Alaska Airlines	31	0%	67.7%	5.9 min	0.0%
YX Republic Airline	16	0%	100.0%	-21.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MIA–ATL	Miami to Atlanta	517	56.5%	42.7 min	3.3%
MIA–LGA	Miami to New York	461	62.7%	22.3 min	3.0%
MIA–DFW	Miami to Dallas/Fort Worth	446	67.5%	21.0 min	0.7%
MIA–JFK	Miami to New York	435	63.4%	24.1 min	2.8%
MIA–MCO	Miami to Orlando	341	58.7%	36.1 min	2.9%
MIA–ORD	Miami to Chicago	328	70.4%	6.7 min	1.2%
MIA–DCA	Miami to Washington	316	63.6%	19.5 min	2.2%
MIA–EWR	Miami to Newark	300	58.0%	35.1 min	3.0%
MIA–CLT	Miami to Charlotte	289	63.3%	27.0 min	0.3%
MIA–SJU	Miami to San Juan	285	74.4%	18.5 min	1.1%
MIA–BOS	Miami to Boston	274	63.5%	22.1 min	2.6%
MIA–IAH	Miami to Houston	274	56.9%	26.9 min	8.4%

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), July 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2024	Minutes
Air carrier	35.3%	36.6%	93,606
Late-arriving aircraft	45.2%	42.7%	119,963
National Aviation System	16.5%	16.0%	43,778
Extreme weather	2.8%	4.6%	7,501
Security	0.2%	0.1%	554

265,402 delay minutes on 3,037 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 July 2024?

62.8% of 8,733 scheduled domestic departures left less than 15 minutes late, and 62.7% reached their destination on time. The national figures that month were 68.5% and 68.1%.

How does that compare with a year earlier?

July 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 July 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.