Airport month record

MIAJUN

Miami International in June 2026

Departures: 8,797
Month: June 2026
National, same month: 74.3%
Carriers: 8

Historical statistics for June 2026, not live status or a forecast for this year’s June. For today’s conditions at MIA, see live FAA status.

MIA in June sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, level with the national rate of 74.3%. The late ones land a little over an hour behind schedule. That rests on 8,797 flights, of which Envoy Air flew 1,147 at 82.7% on time.

Envoy Air is the most reliable of the five carriers covered here at 82.7% on time across 1,147 flights.

On time

74.2%

Arrivals under 15 minutes late, of 8,690 completed departures

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

0.78%

Nationally in June: 1.65%

Whole year

73.8%

MIA across all twelve months

These figures cover 8,797 departures from Miami International in June 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.

Against the year

June next to MIA's other months

Against MIA's own year, June ran level with the twelve-month rate of 73.8%, which makes it number nine of twelve months, best first. Cancellations were unusually low for MIA in June, at 0.78% against 1.62% across the year.

MIA month by month
Month	Flights	On time	Avg delay	Cancelled	Grade
July 2025	9,079	63.6%	84 min	2.60%	D
August 2025	8,731	67.6%	77 min	0.86%	C+
September 2025	7,573	78.6%	70 min	0.36%	B+
October 2025	8,457	77.9%	70 min	0.37%	B+
November 2025	9,270	77.0%	67 min	1.95%	B
December 2025	10,099	75.2%	66 min	1.15%	B
January 2026	10,439	76.0%	77 min	5.01%	B−
February 2026	9,304	75.3%	64 min	1.74%	B
March 2026	10,460	69.6%	78 min	2.96%	C
April 2026	9,556	75.3%	62 min	0.30%	B+
May 2026	9,296	75.3%	66 min	0.45%	B+
June 2026 (this page)	8,797	74.2%	72 min	0.78%	C+

Departure window

The best time of day to leave MIA in June

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 31 points, against 17 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am1,054 flights91.5%
8am–11am1,369 flights89.2%
11am–2pm950 flights82.5%
2pm–5pm1,611 flights69.1%
5pm–8pm1,601 flights60.5%
8pm–5am2,212 flights66.9%

Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 60.5% on time, against 91.5% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8pm–5am window is the busiest, with 2,212 flights scheduled in it.

Across the week, Tuesday is the strongest day at 80.7% on time and Saturday the weakest at 66.2%. 15 points is a smaller lever than departure hour, but it is free.

Carrier by carrier

Which airlines ran best at MIA in June

The choice of carrier is not cosmetic here. Envoy Air arrives on time 82.7% of the time; Southwest Airlines manages 65.3%. Sample sizes sit next to every figure, because a two-point gap across 453 flights means less than a ten-point one.

Carriers at MIA in June 2026
Airline	Flights	On time	Avg delay	Cancelled	Grade
American Airlines	5,362	71.4%	74 min	0.88%	C+
Envoy Air	1,147	82.7%	45 min	0.00%	B+
Delta Air Lines	904	81.3%	83 min	1.33%	B
United Airlines	495	77.3%	74 min	0.40%	B+
Southwest Airlines	453	65.3%	58 min	0.44%	C+
Frontier Airlinesthin sample	342	78.0%	82 min	1.17%	B
Republic Airwaysthin sample	64	70.5%	147 min	3.12%	C−
Alaska Airlinesthin sample	30	83.3%	41 min	0.00%	B+

The spread between Envoy and Southwest is 17 points, wide enough that it should decide the booking. On a hundred trips that is 17 more arrivals inside the on-time window.

Route by route

Busiest routes out of MIA in June

Routes from MIA in June 2026
Route	Flights	On time	Avg delay	Cancelled	Grade
MIA to ATL · Atlanta	491	78.1%	69 min	1.22%	B
MIA to LGA · New York	442	71.3%	95 min	1.81%	C
MIA to DFW · Dallas-Fort Worth	383	74.6%	70 min	3.66%	C−
MIA to JFK · New Yorkthin sample	360	71.3%	91 min	1.39%	C
MIA to ORD · Chicagothin sample	330	69.0%	85 min	2.42%	C
MIA to DCA · Washingtonthin sample	326	73.9%	77 min	1.53%	C
MIA to CLT · Charlottethin sample	298	80.3%	67 min	1.01%	B
MIA to PHL · Philadelphiathin sample	291	76.0%	85 min	2.75%	B
MIA to IAH · Houstonthin sample	277	79.1%	73 min	0.00%	B+
MIA to EWR · Newarkthin sample	270	72.0%	81 min	0.00%	C+
MIA to LAX · Los Angelesthin sample	268	76.5%	56 min	0.00%	B+
MIA to MCO · Orlandothin sample	264	71.1%	77 min	0.38%	C+
MIA to BOS · Bostonthin sample	264	73.5%	67 min	0.00%	C+
MIA to TPA · Tampathin sample	226	72.0%	69 min	0.44%	C+
MIA to SJU · San Juanthin sample	214	84.6%	58 min	0.00%	B+
MIA to BNA · Nashvillethin sample	205	60.6%	64 min	0.49%	D+
MIA to AUS · Austinthin sample	200	69.8%	82 min	0.50%	C+
MIA to RDU · Raleighthin sample	195	72.4%	81 min	1.54%	C
MIA to BWI · Baltimorethin sample	179	69.9%	69 min	0.56%	C+
MIA to DEN · Denverthin sample	179	69.7%	62 min	0.00%	C+
MIA to SFO · San Franciscothin sample	174	56.4%	60 min	0.57%	D+
MIA to PHX · Phoenixthin sample	150	78.7%	83 min	0.00%	B+
MIA to MSY · New Orleansthin sample	120	73.1%	61 min	0.00%	C+
MIA to SEA · Seattlethin sample	120	81.7%	59 min	0.00%	B+
MIA to JAX · Jacksonvillethin sample	120	69.2%	60 min	0.00%	C+

Delay causes

What held MIA up in June

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 161,000 reported delay minutes.

Late-arriving aircraft
38%
Carrier
29%
National Airspace System
25%
Extreme weather
7%
Security
0%

38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 161,000 reported delay minutes here, that single category outweighs weather by 5 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 160,829 reported delay minutes.

Cancellations are rare at 0.78%, below the national 1.65% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.8% of arrivals land a full hour or more behind schedule, against 9.7% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

What to do with this

Flying from MIA in June

For a June trip through MIA: expect 74.2% on time and 0.78% cancelled, going by June 2026. The 5am–8am window was the strongest part of the day.

Miami International (MIA), the whole year
MIA in July63.6%
MIA in August67.6%
MIA in September78.6%
MIA in October77.9%
MIA in November77.0%
MIA in December75.2%
MIA in January76.0%
MIA in February75.3%
MIA in March69.6%
MIA in April75.3%
MIA in May75.3%

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures