Detroit (DTW) to Greer (GSP): On-Time Performance
Data through May 2026
When you fly DTW to GSP matters as much as anything else about the booking: the route swung from 97% on-time in October 2024 to just 59% in July 2024. Across the full period the route averages 77% on-time against a national 78%.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 1.8
- last 12 months
- Duration
- 1h 44m
- scheduled
- Distance
- 508 mi
Best airline from DTW to GSP
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Endeavor Airmost reliable | 87% | 9 min | 0.6% | 320 |
| Delta Air Lines | 74% | 23 min | 2.1% | 518 |
| SkyWest Airlines | 72% | 23 min | 1.6% | 374 |
Monthly on-time trend
Best time to fly from DTW to GSP
Aim for departures around 10 a.m. (83% on-time); avoid 9 p.m. departures (65%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 24 min |
| Tuesday | 76% | 21 min |
| Wednesday | 75% | 20 min |
| Thursdaybest | 82% | 10 min |
| Friday | 75% | 23 min |
| Saturday | 78% | 20 min |
| Sunday | 77% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft24%
- Airline operations58%
- National airspace system10%
- Weather8%
Frequently asked questions
- How often are flights from DTW to GSP delayed?
- 23% of DTW–GSP flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 20 minutes.
- Which airline is most reliable from DTW to GSP?
- Endeavor Air has the best on-time record on this route at 87%, based on 320 flights. 3 airlines flew DTW–GSP frequently enough to compare in this period.
- What is the best time of day to fly from DTW to GSP?
- Departures around 10 a.m. have the best record (83% on-time), while departures around 9 p.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DTW to GSP?
- The scheduled DTW–GSP flight time averages 1h 44m over 508 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are DTW to GSP flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from DTW to GSP?
- July 2024 was the roughest month in this dataset, with only 59% of arrivals on time. The best was October 2024 at 97%. If your dates are flexible, that 38-point gap is worth planning around.
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Based on 1,212 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.