Chicago (MDW) to Dallas (DAL): On-Time Performance
Data through July 2026
When you fly MDW to DAL matters as much as anything else about the booking: the route swung from 88% on-time in October 2024 to just 63% in June 2025. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 64%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 6.0
- last 12 months
- Duration
- 2h 21m
- scheduled
- Distance
- 793 mi
Monthly on-time trend
Best time to fly from MDW to DAL
Aim for departures around 6 a.m. (96% on-time); avoid 9 p.m. departures (41%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 16 min |
| Tuesdaybest | 83% | 12 min |
| Wednesday | 80% | 10 min |
| Thursday | 77% | 13 min |
| Friday | 75% | 16 min |
| Saturday | 78% | 11 min |
| Sunday | 72% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations34%
- National airspace system23%
- Weather3%
Frequently asked questions
- How often are flights from MDW to DAL delayed?
- 23% of MDW–DAL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 14 minutes.
- What is the best time of day to fly from MDW to DAL?
- Departures around 6 a.m. have the best record (96% on-time), while departures around 9 p.m. have the worst (41%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MDW to DAL?
- The scheduled MDW–DAL flight time averages 2h 21m over 793 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are MDW to DAL flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MDW to DAL?
- June 2025 was the roughest month in this dataset, with only 63% of arrivals on time. The best was October 2024 at 88%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 4,633 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.