Historical on-time performance
Denver to Charleston
1,449 miData through Dec 2025Source: US DOT · BTS
Flights on DEN–CHS arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 490 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time78%Medianon timep9025 minCancel0.9%Flights337
- Southwest AirlinesOn-time61%Median5 minp9065 minCancel0.0%Flights153
Why flights run late
Delay causes
- Airline40%
- Weather1%
- Air traffic (NAS)27%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DEN → CHS
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 82% on time.
- Mornings82% on time · p90 25 min · 739 flights
- Middays74% on time · p90 35 min · 465 flights
- Afternoons66% on time · p90 45 min · 435 flights
- Evenings63% on time · p90 80 min · 418 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 75% on time.
- Sundays75% on time · p90 35 min · 320 flights
- Thursdays75% on time · p90 40 min · 303 flights
- Mondays74% on time · p90 50 min · 306 flights
- Wednesdays73% on time · p90 40 min · 281 flights
- Fridays72% on time · p90 45 min · 307 flights
- Saturdays72% on time · p90 40 min · 268 flights
- Tuesdays71% on time · p90 40 min · 283 flights
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