Best Time to Fly MDW to FLL: On-Time Stats by Hour & Airline
Chicago Midway International → Fort Lauderdale-Hollywood International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.0% of Chicago (MDW) to Fort Lauderdale (FLL) flights arrived on time (1,123 scheduled flights). That is 3.6 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (81% on time) and June the worst month (66%).
The cancellation rate was 1.6% (US average 1.8%).
MDW to FLL on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 74.0% | 55 min | 1.6% | 1,123 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to FLL
On-time arrival % by scheduled departure hour (local time), 2,277 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.9% | 0.8% | 132 |
| 6am–7am | 94.5% | 0.0% | 219 |
| 7am–8am | 84.5% | 0.0% | 161 |
| 8am–9am | 79.5% | 0.5% | 212 |
| 9am–10am | 84.1% | 5.5% | 73 |
| 10am–11am | 66.7% | 0.0% | 33 |
| 11am–12pm | 79.8% | 1.2% | 80 |
| 12pm–1pm | 77.1% | 4.4% | 114 |
| 1pm–2pm | 76.7% | 0.4% | 238 |
| 2pm–3pm | 67.2% | 1.5% | 136 |
| 3pm–4pm | 68.7% | 0.7% | 136 |
| 4pm–5pm | 59.4% | 0.0% | 32 |
| 5pm–6pm | 78.5% | 0.9% | 108 |
| 6pm–7pm | 68.4% | 1.0% | 297 |
| 7pm–8pm | 64.7% | 2.1% | 191 |
| 8pm–9pm | 72.9% | 2.7% | 111 |
| 9pm–10pm | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MDW to FLL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 85.7% | +6.6 pts | 4.5% | 44 |
| Christmas & New Year (Dec 20 - Jan 3) | 68.7% | -10.5 pts | 0.0% | 99 |
| Summer peak (Jun 15 - Aug 15) | 68.1% | -11.1 pts | 2.2% | 370 |
| All other days | 79.1% | — | 1.0% | 1,764 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).