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10,869 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 63%.

Best time to leave 5–6 am 93% arrive on time from FLL
Best airport pair MIA → ORD 72% on time, 2.0% cancelled, 4,450 flights
Best single flight AA 1431 MIA 08:28 → ORD 10:59 · 90% on time Avoid UA 403 FLL 16:20 → ORD 19:00 · 52% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
MIA
91
91
90
85
81
79
68
71
67
68
68
63
61
62
60
71
FLL
95
91
93
79
89
89
76
82
68
65
59
67
57
54
67
55
51
52
PBI
91
92
87
78
71
63
68
71
60
% 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

Pick an hour to see this route’s flights leaving then.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
United 3,112 73% 0.8% 86 min
American 4,654 72% 1.9% 88 min
Frontier 292 71% 2.4% 138 min
Southwest 1,596 70% 1.4% 61 min
Spirit 1,169 62% 4.2% 73 min
JetBlue FLL→ORD only 46 – 6.5% 75 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 1755 FLL 12:26 ORD 14:55 87%
UA 1983 MIA 12:30 ORD 15:13 82%
F9 2206 FLL 09:48 ORD 12:24 69%
· · ·
UA 651 FLL 19:37 ORD 22:20 66%
UA 2106 MIA 16:10 ORD 18:53 59%
UA 403 FLL 16:20 ORD 19:00 52%
All 32 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.
United FLL ORD 3h 32m 76% 0.7% 1,510 Flying now
American MIA ORD 3h 31m 73% 1.9% 3,017 Flying now
Southwest FLL MDW 3h 10m 72% 1.3% 1,124 Flying now
United MIA ORD 3h 39m 72% 1.0% 1,070 Flying now
American FLL ORD 3h 31m 70% 1.4% 841 Flying now
American PBI ORD 3h 25m 70% 2.4% 796 Flying now
Southwest MIA MDW 3h 15m 68% 1.6% 439 Flying now
Frontier FLL ORD 3h 38m 67% 2.7% 182 Flying now
United PBI ORD 3h 27m 67% 0.8% 532 Flying now
JetBlue FLL ORD 3h 39m 60% 6.5% 46 Flying now
Frontier MIA MDW 3h 27m 79% 1.6% 64 Not 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
Spirit FLL ORD 3h 22m 61% 3.3% 852 Not flying now
Southwest FLL ORD 3h 35m 45%few flights 3.0% 33 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