Best Time to Fly FLL to MDW: On-Time Stats by Hour & Airline
Fort Lauderdale-Hollywood International → Chicago Midway International
Data through July 2026 · Last updated October 18, 2026
1,124 flights were scheduled from Fort Lauderdale (FLL) to Chicago (MDW) in the last 12 months, and 71.0% of those that flew arrived on time, 6.6 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (84% on time) and March the worst month (68%).
The cancellation rate was 1.3% (US average 1.8%).
FLL to MDW 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 | 71.0% | 54 min | 1.3% | 1,124 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly FLL to MDW
On-time arrival % by scheduled departure hour (local time), 2,279 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.8% | 0.8% | 119 |
| 6am–7am | 91.3% | 2.1% | 378 |
| 7am–8am | 92.1% | 0.0% | 179 |
| 8am–9am | 94.1% | 0.0% | 52 |
| 9am–10am | Limited data | 16 | |
| 10am–11am | 90.0% | 1.2% | 84 |
| 11am–12pm | 77.6% | 0.9% | 108 |
| 12pm–1pm | 72.7% | 0.5% | 211 |
| 1pm–2pm | 67.5% | 0.8% | 128 |
| 2pm–3pm | 67.9% | 0.5% | 195 |
| 3pm–4pm | Limited data | 26 | |
| 4pm–5pm | 66.9% | 0.8% | 127 |
| 5pm–6pm | 64.9% | 0.8% | 133 |
| 6pm–7pm | 49.7% | 1.6% | 182 |
| 7pm–8pm | 77.2% | 1.6% | 129 |
| 8pm–9pm | 63.4% | 1.7% | 115 |
| 9pm–10pm | 66.3% | 4.2% | 96 |
| 10pm–11pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on FLL to MDW
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) | 76.2% | -1.4 pts | 2.2% | 45 |
| Christmas & New Year (Dec 20 - Jan 3) | 65.0% | -12.7 pts | 1.0% | 98 |
| Summer peak (Jun 15 - Aug 15) | 71.0% | -6.7 pts | 1.6% | 371 |
| All other days | 77.6% | — | 1.1% | 1,765 |
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).