Atlanta (ATL) to Detroit (DTW): On-Time Performance
Data through July 2026
The calendar drives reliability on ATL–DTW. September 2025 flights landed on schedule 88% of the time, but July 2026 dropped to 57% — a gap of 31 points. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 68%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 13
- last 12 months
- Duration
- 1h 58m
- scheduled
- Distance
- 594 mi
Best airline from ATL to DTW
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 78% | 15 min | 0.6% | 7,697 |
| Spirit Airlines | 73% | 21 min | 1.7% | 1,627 |
| Frontier Airlines | 65% | 26 min | 2.7% | 893 |
Monthly on-time trend
Best time to fly from ATL to DTW
Aim for departures around 6 a.m. (90% on-time); avoid 9 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 18 min |
| Tuesday | 79% | 13 min |
| Wednesdaybest | 83% | 11 min |
| Thursday | 78% | 16 min |
| Friday | 74% | 22 min |
| Saturday | 77% | 15 min |
| Sunday | 70% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft31%
- Airline operations48%
- National airspace system15%
- Weather6%
Frequently asked questions
- How often are flights from ATL to DTW delayed?
- 24% of ATL–DTW 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 17 minutes.
- Which airline is most reliable from ATL to DTW?
- Delta Air Lines has the best on-time record on this route at 78%, based on 7,697 flights. 3 airlines flew ATL–DTW frequently enough to compare in this period.
- What is the best time of day to fly from ATL to DTW?
- Departures around 6 a.m. have the best record (90% on-time), while departures around 9 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to DTW?
- The scheduled ATL–DTW flight time averages 1h 58m over 594 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are ATL to DTW flights cancelled?
- 1% 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 ATL to DTW?
- July 2026 was the roughest month in this dataset, with only 57% of arrivals on time. The best was September 2025 at 88%. If your dates are flexible, that 31-point gap is worth planning around.
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Based on 10,217 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.