Route on-time record
CHS to DEN: most on-time flights and the best time to fly
Charleston (Charleston International Airport) to Denver (Denver International Airport). 647 nonstop flights in Jun 2025 to May 2026, 70% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was United 1818 at 8:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CHS → DEN
Charleston to Denver: 647 nonstop flights a year
On time (12 months)
70%
Cancelled
0.8%
avg delay 20 min
Best time to leave
Before 9 AM
91% on time vs 66% 3 to 6 PM
Most reliable airline
United
71% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · United 1818
8:00 AM → 10:05 AM4h 05m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 91% of the time (53 flights, Jun 2025 to May 2026).
- Never cancelled in 53 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 66%).
Limited track record · 53 flights
Find United 1818 fares Opens this date on Aviasales#2 · United 557
4:00 PM → 6:04 PM4h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 68%
- Cancelled
- 0.8%
- Avg arrival delay
- 25 min
- Arrived on time 68% of the time (351 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 66% on time; Before 9 AM: 91%).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 351 flights
Find United 557 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines71%
439 flights · 72% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
96 flights · avg delay 4 min
- Noon to 3 PM70%
108 flights · avg delay 15 min
- 3 to 6 PM66%
442 flights · avg delay 24 min
Best day: Wednesday (80%). Worst: Saturday (74%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Air traffic control and airport volume45%
- Late-arriving aircraft31%
- Airline (crew, maintenance, boarding)20%
- Severe weather4%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
CHS to DEN questions
- What time of day is best to fly CHS to DEN?
- Before 9 AM: 91% of flights arrived on time, against 66% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from CHS to DEN?
- United, with a season-adjusted 71% chance of operating and arriving on time over 439 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on CHS to DEN?
- June (67% on time); the best was November (84%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from CHS
- DEN to CHS (return)
- CHS to ATL 89%
- CHS to CLT 83%
- CHS to ORD 77%
- CHS to DCA 72%
- CHS to LGA 74%
- CHS to EWR 79%
- CHS to DFW 80%
- CHS to BWI 82%
- CHS to PHL 78%
- CHS to BOS 71%
- CHS to MIA 79%
- CHS to BNA 81%
Most on-time flights from CHS on every route →
Live status: FAA delays and ground stops