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4,450 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 2 in 3.

Best time to leave 6–7 am 90% arrive on time from MIA
Best single flight AA 1431 MIA 08:28 → ORD 10:59 · 90% on time Avoid UA 2106 MIA 16:10 → ORD 18:53 · 59% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
MIA
93
91
90
85
80
69
68
69
70
69
73
61
62
60
71
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55
Chicago flights leaving MIA 5–6 pm: 3Close ×
AA 3056 MIA 17:00 ORD 19:53 3h 53m 149 60% 2.0% 83 min
UA 2311 MIA 17:32 ORD 20:13 3h 41m 36 34% 2.8% 78 min
UA 2798 MIA 17:39 ORD 20:22 3h 43m 35 69% 0.0% 86 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
American 3,017 73% 1.9% 77 min
United 1,070 72% 1.0% 89 min
Spirit 317 65% 6.6% 66 min
Frontier 46 – 2.2% 175 min

Dimmed: fewer than 150 flights in the year, too few to rank.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
AA 1431 MIA 08:28 ORD 10:59 90%
AA 581 MIA 06:40 ORD 09:08 87%
UA 1983 MIA 12:30 ORD 15:13 82%
UA 2106 MIA 16:10 ORD 18:53 59%
All 12 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
American MIA ORD 3h 31m 73% 1.9% 3,017 Flying now
United MIA ORD 3h 39m 72% 1.0% 1,070 Flying now
Frontier MIA ORD 3h 38m 73% 2.2% 46 Not flying now
Spirit MIA ORD 3h 25m 65% 6.6% 317 Not flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON