Denver (DEN) to Greer (GSP): On-Time Performance
Data through July 2026
The calendar drives reliability on DEN–GSP. December 2024 flights landed on schedule 100% of the time, but August 2024 dropped to 73% — a gap of 27 points. Across the full period the route averages 85% on-time against a national 78%.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 1.0
- last 12 months
- Duration
- 3h 8m
- scheduled
- Distance
- 1,278 mi
Best airline from DEN to GSP
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 86% | 7 min | 1.1% | 467 |
| United Airlines | 85% | 9 min | 0.0% | 293 |
Monthly on-time trend
Best time to fly from DEN to GSP
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 90% | 6 min |
| Tuesday | 88% | 6 min |
| Wednesday | 88% | 6 min |
| Thursday | 84% | 8 min |
| Friday | 85% | 10 min |
| Saturday | 79% | 10 min |
| Sunday | 83% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft29%
- Airline operations48%
- National airspace system22%
- Weather2%
Frequently asked questions
- How often are flights from DEN to GSP delayed?
- 15% of DEN–GSP 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 8 minutes.
- Which airline is most reliable from DEN to GSP?
- SkyWest Airlines has the best on-time record on this route at 86%, based on 467 flights. 2 airlines flew DEN–GSP frequently enough to compare in this period.
- How long is the flight from DEN to GSP?
- The scheduled DEN–GSP flight time averages 3h 8m over 1,278 miles. Actual arrival times vary — flights on this route land 15+ minutes late 15% of the time.
- How often are DEN to GSP flights cancelled?
- 0.6% 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 DEN to GSP?
- August 2024 was the roughest month in this dataset, with only 73% of arrivals on time. The best was December 2024 at 100%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 788 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.