Route
MIA → ORD
Miami International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 71.1%
- Less than 15 minutes late
- Cancelled
- 1.9%
- Of scheduled flights
- Average delay when late
- 82 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4,464
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 34%
- Late-arriving aircraft 34%
- Airline (crew, maintenance, cleaning) 25%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 71.8% | 315 |
| October 2025 | 77.4% | 323 |
| November 2025 | 77.7% | 347 |
| December 2025 | 74.3% | 383 |
| January 2026 | 73.1% | 415 |
| February 2026 | 71.1% | 412 |
| March 2026 | 63.8% | 498 |
| April 2026 | 76.7% | 400 |
| May 2026 | 74.5% | 354 |
| June 2026 | 69.0% | 330 |
| July 2026 | 61.5% | 340 |
| August 2026 | 64.0% | 347 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| American Airlines | 3,044 | 72.5% | 1.7% | 80 min |
| United Airlines | 1,087 | 69.7% | 1.0% | 89 min |
| NK | 287 | 60.8% | 7.3% | 67 min |
| Frontier Airlines | 46 | 73.3% | 2.2% | 182 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2106
44% late · 354 flights
-
UA1983
19% late · 308 flights
-
AA581
14% late · 179 flights
-
AA1431
9% late · 138 flights
-
AA1918
37% late · 126 flights
-
AA3056
37% late · 122 flights
-
AA2194
38% late · 106 flights
-
AA3304
47% late · 103 flights
-
NK1710
36% late · 96 flights
-
AA2973
26% late · 95 flights
-
AA483
22% late · 89 flights
-
NK1712
73% late · 82 flights
-
AA1881
49% late · 76 flights
-
AA2247
34% late · 76 flights
-
AA2323
38% late · 76 flights
-
AA2910
27% late · 76 flights
-
AA1219
21% late · 71 flights
-
AA1159
39% late · 62 flights
-
AA2634
36% late · 60 flights
-
AA1204
15% late · 55 flights
-
AA3153
39% late · 54 flights
-
UA1639
57% late · 53 flights
-
UA2311
68% late · 46 flights
-
NK1530
5% late · 45 flights
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