Best Time to Fly TUS to MDW: On-Time Stats by Hour & Airline
Tucson International → Chicago Midway International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.4% of Tucson (TUS) to Chicago (MDW) flights arrived on time (286 scheduled flights). That is 2.8 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
August has been the best month (98% on time) and Monday the weakest day of the week (83%).
1.1% of flights were cancelled, versus 1.8% nationally.
TUS 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 | 80.4% | 47 min | 1.1% | 286 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TUS to MDW
On-time arrival % by scheduled departure hour (local time), 640 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.3% | 0.0% | 46 |
| 6am–7am | 97.5% | 0.6% | 161 |
| 7am–8am | 94.0% | 0.8% | 119 |
| 8am–9am | 93.4% | 0.0% | 107 |
| 9am–10am | Limited data | 17 | |
| 10am–11am | Limited data | 8 | |
| 11am–12pm | 91.1% | 2.2% | 46 |
| 12pm–1pm | 62.0% | 1.2% | 81 |
| 1pm–2pm | Limited data | 24 | |
| 2pm–3pm | Limited data | 26 | |
| 3pm–4pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TUS 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) | Limited data | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 98.5% | +10.6 pts | 1.4% | 69 |
| All other days | 87.9% | — | 0.2% | 527 |
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).