Miami International in October 2023

83.2%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 October 2023, reporting carriers scheduled 8,159 domestic departures from Miami International (MIA). 83.2% left less than 15 minutes late and 82.1% reached their destination on time; 0.3% were cancelled.

Nationally that month, 83.8% of flights departed on time and 84.0% arrived on time, so MIA departures were 0.6 points below the national departure figure.

Flights arriving at MIA that month were on time 83.5% of the time (8,156 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 40%, late-arriving aircraft 36% and national aviation system 22%.

On time 82.1%
Arrived 15+ minutes late 17.5%
Cancelled 0.3%
Diverted 0.1%

Every scheduled departure from MIA in October 2023, judged by arrival at the destination.

October 2023 against a year earlier, the airport's year and the nation

Measure	Oct 2023	Year earlier	MIA, 12 months to Jul 2026	All reported flights, Oct 2023
Departed on time	83.2%	—	72.9%	83.8%
Arrived on time	82.1%	—	72.3%	84.0%
Cancelled	0.3%	—	1.6%	0.4%
Average departure delay (late minutes only)	11.8 min	—	19.7 min	11.0 min
Scheduled departures a day	272	—	305	19,966
Scheduled departures	8,159	—	111,186	598,968

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	4,323	53%	83.5%	1.7 min	0.0%
MQ Envoy Air	990	12%	82.7%	2.5 min	0.4%
DL Delta Air Lines	849	10%	83.4%	4.7 min	0.0%
NK Spirit Airlines	604	7%	76.7%	4.8 min	2.6%
WN Southwest Airlines	514	6%	76.5%	5.8 min	0.2%
UA United Airlines	429	5%	85.3%	-2.8 min	0.2%
F9 Frontier Airlines	215	3%	78.1%	6.3 min	0.5%
B6 JetBlue Airways	184	2%	70.7%	13.5 min	0.5%
AS Alaska Airlines	31	0%	87.1%	4.3 min	0.0%
YX Republic Airline	20	0%	90.0%	-7.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MIA–ATL	Miami to Atlanta	528	79.0%	7.0 min	0.2%
MIA–LGA	Miami to New York	424	87.0%	-3.7 min	0.0%
MIA–JFK	Miami to New York	410	81.0%	6.3 min	0.2%
MIA–DFW	Miami to Dallas/Fort Worth	382	77.5%	7.3 min	1.0%
MIA–EWR	Miami to Newark	376	88.8%	-5.5 min	0.0%
MIA–ORD	Miami to Chicago	367	83.7%	-4.7 min	0.3%
MIA–LAX	Miami to Los Angeles	327	82.6%	3.1 min	0.0%
MIA–MCO	Miami to Orlando	317	83.9%	1.9 min	0.0%
MIA–BOS	Miami to Boston	302	84.4%	4.5 min	0.3%
MIA–DCA	Miami to Washington	299	83.9%	0.6 min	0.0%
MIA–CLT	Miami to Charlotte	298	80.9%	6.5 min	0.0%
MIA–PHL	Miami to Philadelphia	290	82.8%	1.9 min	0.0%

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), October 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2023	Minutes
Air carrier	39.7%	41.3%	35,620
Late-arriving aircraft	36.0%	40.5%	32,235
National Aviation System	21.6%	14.4%	19,332
Extreme weather	2.5%	3.7%	2,203
Security	0.3%	0.2%	250

89,640 delay minutes on 1,425 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 October 2023?

83.2% of 8,159 scheduled domestic departures left less than 15 minutes late, and 82.1% reached their destination on time. The national figures that month were 83.8% and 84.0%.

How does that compare with a year earlier?

October 2022 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 October 2023; 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.