Miami International in July 2026

63.6%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 2026, reporting carriers scheduled 9,204 domestic departures from Miami International (MIA). 63.6% left less than 15 minutes late and 61.9% reached their destination on time; 2.1% were cancelled.

Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so MIA departures were 5.2 points below the national departure figure.

A year earlier, in July 2025, the airport had 9,079 departures with 63.6% leaving on time: a change of 0.0 points, with flights up 1%.

Flights arriving at MIA that month were on time 68.7% of the time (9,203 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 24% and national aviation system 22%.

On time 61.9%
Arrived 15+ minutes late 35.4%
Cancelled 2.1%
Diverted 0.6%

Every scheduled departure from MIA in July 2026, judged by arrival at the destination.

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

Measure	Jul 2026	Jul 2025	MIA, 12 months to Jul 2026	All reported flights, Jul 2026
Departed on time	63.6%	63.6%	72.9%	68.8%
Arrived on time	61.9%	61.6%	72.3%	69.4%
Cancelled	2.1%	2.6%	1.6%	2.6%
Average departure delay (late minutes only)	30.2 min	30.6 min	19.7 min	24.1 min
Scheduled departures a day	307	303	305	21,066
Scheduled departures	9,204	9,079	111,186	631,970

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	5,620	61%	59.0%	27.3 min	2.1%
MQ Envoy Air	1,214	13%	71.8%	9.4 min	0.0%
DL Delta Air Lines	945	10%	65.5%	19.4 min	4.4%
UA United Airlines	488	5%	70.3%	10.3 min	2.5%
WN Southwest Airlines	458	5%	54.1%	27.1 min	1.1%
F9 Frontier Airlines	384	4%	58.9%	21.6 min	3.6%
YX Republic Airline	64	1%	70.3%	11.6 min	0.0%
AS Alaska Airlines	31	0%	80.6%	-5.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MIA–ATL	Miami to Atlanta	557	58.9%	30.2 min	3.4%
MIA–LGA	Miami to New York	460	50.0%	38.3 min	6.5%
MIA–DFW	Miami to Dallas/Fort Worth	405	68.4%	19.4 min	0.2%
MIA–JFK	Miami to New York	372	56.2%	31.8 min	7.0%
MIA–ORD	Miami to Chicago	340	59.1%	35.2 min	2.6%
MIA–DCA	Miami to Washington	328	62.8%	19.5 min	3.7%
MIA–PHL	Miami to Philadelphia	310	60.0%	25.9 min	7.1%
MIA–CLT	Miami to Charlotte	306	68.3%	13.5 min	0.7%
MIA–IAH	Miami to Houston	287	72.5%	6.6 min	2.8%
MIA–LAX	Miami to Los Angeles	282	65.6%	18.7 min	1.4%
MIA–MCO	Miami to Orlando	270	56.7%	36.4 min	0.4%
MIA–EWR	Miami to Newark	269	55.4%	26.8 min	7.4%

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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2026	Minutes
Air carrier	24.2%	31.7%	64,554
Late-arriving aircraft	42.3%	41.8%	112,999
National Aviation System	22.0%	19.9%	58,647
Extreme weather	11.5%	6.5%	30,592
Security	0.1%	0.1%	229

267,021 delay minutes on 3,260 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 2026?

63.6% of 9,204 scheduled domestic departures left less than 15 minutes late, and 61.9% reached their destination on time. The national figures that month were 68.8% and 69.4%.

How does that compare with a year earlier?

In July 2025, 63.6% of 9,079 departures left on time and 2.6% were cancelled, against 63.6% and 2.1% in July 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2026; 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.