MIA · Miami International Airport

Share of flights 15+ min late, by month

departures arrivals usual for the month (departures) Jan 2015 → Jul 2026; gridlines 10/20/30/40%

Month	Flights	Late 15+	vs usual	Cancelled	Avg min	Main cause
Jul 2026	9,204	35.0%	+0.3	2.1%	30	Late aircraft
Jun 2026	8,797	25.4%	-8.3	0.8%	19	Late aircraft
May 2026	9,296	24.2%	-0.7	0.5%	17	Late aircraft
Apr 2026	9,556	23.2%	+0.5	0.3%	16	Late aircraft
Mar 2026	10,460	31.3%	+5.1	3.0%	25	Late aircraft
Feb 2026	9,304	22.6%	+0.6	1.7%	16	Late aircraft
Jan 2026	10,439	26.2%	+3.5	5.0%	21	Airline
Dec 2025	10,099	25.6%	+1.1	1.1%	18	Late aircraft
Nov 2025	9,270	22.6%	+6.0	2.0%	16	Airline
Oct 2025	8,457	20.6%	+4.1	0.4%	16	Late aircraft
Sep 2025	7,573	22.3%	+4.6	0.4%	16	Late aircraft
Aug 2025	8,731	31.4%	+1.9	0.9%	25	Late aircraft
Jul 2025	9,079	34.7%	+3.5	2.6%	31	Late aircraft
Jun 2025	8,831	29.8%	-3.9	1.6%	26	Late aircraft
May 2025	9,440	25.0%	+1.9	0.9%	20	Late aircraft
Apr 2025	9,878	22.7%	+0.3	0.8%	18	Late aircraft
Mar 2025	10,920	24.7%	-1.6	1.3%	21	Late aircraft
Feb 2025	9,447	22.0%	+0.2	1.0%	17	Late aircraft
Jan 2025	10,182	22.2%	-0.5	2.1%	16	Airline
Dec 2024	9,937	26.1%	+3.0	0.5%	18	Late aircraft
Nov 2024	8,972	16.1%	-1.1	0.1%	11	Airline
Oct 2024	8,299	14.9%	-1.6	1.9%	11	Airline
Sep 2024	7,603	17.7%	+0.4	0.8%	12	Airline
Aug 2024	8,459	37.2%	+9.9	4.1%	33	Late aircraft

Airline	Flights	Late	Canc.
Envoy	1,406	15.4%	1.9%
United	705	18.6%	1.6%
Frontier	363	23.0%	4.1%
Delta	1,067	28.4%	3.1%
American	5,917	28.7%	6.6%
Southwest	466	29.9%	3.0%
Alaska	64	30.2%	1.6%
Spirit	356	32.8%	6.7%
Republic	95	37.2%	9.5%

Airlines with 30+ departures that month.

Date	Flights	Late	Canc.
2017-09-09	162	—	100%
2017-09-10	169	—	100%
2017-09-11	171	—	100%
2017-09-08	161	69%	62%
2024-06-12	282	70%	58%
2024-03-23	364	75%	24%
2024-06-13	282	67%	43%
2016-10-06	178	21%	71%
2024-07-19	285	73%	13%
2017-09-07	162	69%	20%
2024-08-04	283	60%	38%
2026-03-16	342	55%	42%

Departures; ranked by share late or cancelled.