Denver (DEN) to Charleston (CHS): On-Time Performance
Data through July 2026
When you fly DEN to CHS matters as much as anything else about the booking: the route swung from 91% on-time in October 2024 to just 60% in July 2025. Across the full period the route averages 76% on-time against a national 78%.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 1.8
- last 12 months
- Duration
- 3h 18m
- scheduled
- Distance
- 1,449 mi
Best airline from DEN to CHS
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 81% | 10 min | 0.7% | 834 |
| Southwest Airlines | 70% | 17 min | 0.7% | 573 |
Monthly on-time trend
Best time to fly from DEN to CHS
Aim for departures around 9 a.m. (83% on-time); avoid 2 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 13 min |
| Tuesdaybest | 80% | 10 min |
| Wednesday | 77% | 13 min |
| Thursday | 76% | 14 min |
| Friday | 74% | 14 min |
| Saturday | 75% | 11 min |
| Sunday | 75% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations37%
- National airspace system30%
- Weather1%
Frequently asked questions
- How often are flights from DEN to CHS delayed?
- 24% of DEN–CHS 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 13 minutes.
- Which airline is most reliable from DEN to CHS?
- United Airlines has the best on-time record on this route at 81%, based on 834 flights. 2 airlines flew DEN–CHS frequently enough to compare in this period.
- What is the best time of day to fly from DEN to CHS?
- Departures around 9 a.m. have the best record (83% on-time), while departures around 2 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to CHS?
- The scheduled DEN–CHS flight time averages 3h 18m over 1,449 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are DEN to CHS flights cancelled?
- 0.7% 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 CHS?
- July 2025 was the roughest month in this dataset, with only 60% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 31-point gap is worth planning around.
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Based on 1,407 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.