Charleston (CHS) to Denver (DEN): On-Time Performance
Data through May 2026
The calendar drives reliability on CHS–DEN. October 2024 flights landed on schedule 96% of the time, but July 2025 dropped to 50% — a gap of 46 points. Across the full period the route averages 73% on-time against a national 78%.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 1.8
- last 12 months
- Duration
- 3h 55m
- scheduled
- Distance
- 1,449 mi
Best airline from CHS to DEN
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 76% | 13 min | 0.7% | 546 |
| United Airlines | 71% | 23 min | 1.1% | 804 |
Monthly on-time trend
Best time to fly from CHS to DEN
Aim for departures around 8 a.m. (91% on-time); avoid 3 p.m. departures (54%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 76% | 18 min |
| Tuesday | 75% | 19 min |
| Wednesday | 76% | 20 min |
| Thursday | 70% | 15 min |
| Friday | 73% | 26 min |
| Saturday | 72% | 17 min |
| Sunday | 72% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft30%
- Airline operations27%
- National airspace system40%
- Weather3%
Frequently asked questions
- How often are flights from CHS to DEN delayed?
- 27% of CHS–DEN 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 19 minutes.
- Which airline is most reliable from CHS to DEN?
- Southwest Airlines has the best on-time record on this route at 76%, based on 546 flights. 2 airlines flew CHS–DEN frequently enough to compare in this period.
- What is the best time of day to fly from CHS to DEN?
- Departures around 8 a.m. have the best record (91% on-time), while departures around 3 p.m. have the worst (54%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CHS to DEN?
- The scheduled CHS–DEN flight time averages 3h 55m over 1,449 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are CHS to DEN flights cancelled?
- 1% 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 CHS to DEN?
- July 2025 was the roughest month in this dataset, with only 50% of arrivals on time. The best was October 2024 at 96%. If your dates are flexible, that 46-point gap is worth planning around.
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Based on 1,350 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.