Airport month record
MIAJAN
Miami International in January 2026
- Departures
- 10,439
- Month
- January 2026
- National, same month
- 79.2%
- Carriers
- 9
Historical statistics for January 2026, not live status or a forecast for this year’s January. For today’s conditions at MIA, see live FAA status.
MIA in January carries a cancellation problem, not just a delay problem: 5.0% of scheduled flights never operate, against 4.7% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 10,439 flights, of which Envoy Air flew 1,406 at 83.7% on time.
Envoy Air is the most reliable of the five carriers covered here at 83.7% on time across 1,406 flights.
Key figures
On time
76.0%
Arrivals under 15 minutes late, of 9,888 completed departures
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
5.01%
Nationally in January: 4.71%
Whole year
73.8%
MIA across all twelve months
These figures cover 10,439 departures from Miami International in January 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
January next to MIA's other months
Against MIA's own year, January ran 2 points better than the twelve-month rate of 73.8%, which makes it number four of twelve months, best first. Cancellations are where January stands out: 5.01% of scheduled departures were called off, 3.1 times the airport's rate across the year. Either side of it, December ran 75.2% on time and February 75.3%, so this month sits in line with its neighbours.
| 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 (this page) | 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 | 8,797 | 74.2% | 72 min | 0.78% | C+ |
Departure window
The best time of day to leave MIA in January
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 18 points, against 10 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am1,286 flights89.1%
- 8am–11am1,594 flights84.2%
- 11am–2pm1,282 flights71.2%
- 2pm–5pm1,830 flights71.9%
- 5pm–8pm1,939 flights72.8%
- 8pm–5am2,508 flights72.0%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 71.2% on time against 89.1% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8pm–5am window is the busiest, with 2,508 flights scheduled in it.
Across the week, Tuesday is the strongest day at 81.8% on time and Sunday the weakest at 60.8%. 21 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at MIA in January
The choice of carrier is not cosmetic here. Envoy Air arrives on time 83.7% of the time; American Airlines manages 73.8%. Sample sizes sit next to every figure, because a two-point gap across 5,917 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines | 5,917 | 73.8% | 84 min | 6.57% | C− |
| Envoy Air | 1,406 | 83.7% | 46 min | 1.92% | B |
| Delta Air Lines | 1,067 | 74.7% | 84 min | 3.09% | C− |
| United Airlines | 705 | 82.8% | 73 min | 1.56% | B |
| Southwest Airlines | 466 | 79.9% | 42 min | 3.00% | B |
| Frontier Airlinesthin sample | 363 | 75.9% | 63 min | 4.13% | B− |
| Spirit Airlinesthin sample | 356 | 68.0% | 77 min | 6.74% | C− |
| Republic Airwaysthin sample | 95 | 69.4% | 83 min | 9.47% | C− |
| Alaska Airlinesthin sample | 64 | 75.8% | 46 min | 1.56% | B |
American Airlines cancels 6.6% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Route by route
Busiest routes out of MIA in January
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MIA to LGA · New York | 563 | 75.0% | 84 min | 6.93% | B− |
| MIA to ATL · Atlanta | 549 | 75.4% | 89 min | 2.73% | B |
| MIA to DFW · Dallas-Fort Worth | 435 | 74.2% | 113 min | 9.66% | C− |
| MIA to ORD · Chicago | 415 | 73.1% | 93 min | 3.37% | C− |
| MIA to JFK · New York | 382 | 68.9% | 86 min | 7.07% | C− |
| MIA to EWR · Newark | 381 | 78.5% | 54 min | 6.04% | B− |
| MIA to IAH · Houstonthin sample | 342 | 84.7% | 64 min | 2.34% | B |
| MIA to DCA · Washingtonthin sample | 341 | 73.7% | 75 min | 8.50% | C− |
| MIA to MCO · Orlandothin sample | 331 | 72.0% | 68 min | 3.02% | C− |
| MIA to CLT · Charlottethin sample | 328 | 74.0% | 92 min | 8.23% | C− |
| MIA to BOS · Bostonthin sample | 305 | 77.3% | 110 min | 7.21% | B− |
| MIA to LAX · Los Angelesthin sample | 299 | 73.7% | 104 min | 3.34% | C− |
| MIA to TPA · Tampathin sample | 281 | 75.1% | 68 min | 2.85% | B |
| MIA to PHL · Philadelphiathin sample | 276 | 74.3% | 77 min | 6.88% | C− |
| MIA to DEN · Denverthin sample | 253 | 78.0% | 81 min | 2.37% | B |
| MIA to SJU · San Juanthin sample | 250 | 71.2% | 100 min | 5.60% | C− |
| MIA to BNA · Nashvillethin sample | 241 | 77.4% | 57 min | 7.88% | B− |
| MIA to BWI · Baltimorethin sample | 211 | 83.8% | 54 min | 6.16% | B− |
| MIA to RDU · Raleighthin sample | 202 | 76.0% | 76 min | 9.41% | B− |
| MIA to DTW · Detroitthin sample | 181 | 73.4% | 83 min | 2.21% | C |
| MIA to AUS · Austinthin sample | 175 | 69.3% | 62 min | 4.57% | C− |
| MIA to PHX · Phoenixthin sample | 158 | 78.3% | 67 min | 3.80% | B− |
| MIA to SFO · San Franciscothin sample | 153 | 74.1% | 120 min | 3.92% | C− |
| MIA to EYW · Key Westthin sample | 150 | 83.0% | 38 min | 0.00% | B+ |
| MIA to MSY · New Orleansthin sample | 134 | 80.2% | 76 min | 5.22% | B− |
Delay causes
What held MIA up in January
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 182,000 reported delay minutes.
- 41%Carrier
- 40%Late-arriving aircraft
- 14%National Airspace System
- 5%Extreme weather
- 0%Security
40% 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 182,000 reported delay minutes here, that single category outweighs weather by 8 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 181,744 reported delay minutes.
Cancellations run at 5.01%, against 4.71% nationally. That is about one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
8.8% of arrivals land an hour or more late, close to the national 7.6%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
What to do with this
Flying from MIA in January
For a January trip through MIA: expect 76.0% on time and 5.01% cancelled, going by January 2026. The 5am–8am window was the strongest part of the day.
Related
Where to go next
- 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 February75.3%
- MIA in March69.6%
- MIA in April75.3%
- MIA in May75.3%
- MIA in June74.2%
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.