Route
MDW → MIA
Chicago Midway International Airport Miami International Airport
1,182 miles
Return route MIA → MDW →
How punctual is this route?
- On-time arrivals
- 73.4%
- Less than 15 minutes late
- Cancelled
- 1.2%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 505
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 38%
- Airline (crew, maintenance, cleaning) 33%
- Air traffic control & airport 27%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 83.3% | 25 |
| October 2025 | 95.8% | 24 |
| November 2025 | 83.3% | 39 |
| December 2025 | 63.6% | 45 |
| January 2026 | 62.7% | 51 |
| February 2026 | 84.2% | 38 |
| March 2026 | 68.8% | 79 |
| April 2026 | 75.4% | 58 |
| May 2026 | 79.2% | 53 |
| June 2026 | 64.5% | 31 |
| July 2026 | 61.3% | 31 |
| August 2026 | 74.2% | 31 |
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 |
|---|---|---|---|---|
| Southwest Airlines | 441 | 73.3% | 1.1% | 57 min |
| Frontier Airlines | 64 | 74.6% | 1.6% | 84 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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