Historical on-time performance
Charleston to Denver
1,449 miData through Dec 2025Source: US DOT · BTS
Flights on CHS–DEN arrive on time 63% of the time over the last 12 months.
On-time rate63%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled1.0%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
Too close to call — no single carrier is clearly more on-time here.
- Southwest AirlinesOn-time69%Medianon timep9060 minCancel0.0%Flights153
- United AirlinesOn-time61%Medianon timep9075 minCancel1.5%Flights337
Why flights run late
Delay causes
- Airline25%
- Weather4%
- Air traffic (NAS)51%
- Late aircraft20%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly CHS → DEN
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 60% to 87% on time.
- Mornings87% on time · p90 15 min · 529 flights
- Middays82% on time · p90 25 min · 239 flights
- Afternoons70% on time · p90 60 min · 1,111 flights
- Evenings60% on time · p90 105 min · 191 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 77% on time.
- Sundays77% on time · p90 50 min · 319 flights
- Wednesdays76% on time · p90 45 min · 281 flights
- Tuesdays75% on time · p90 25 min · 284 flights
- Saturdays74% on time · p90 45 min · 271 flights
- Mondays74% on time · p90 45 min · 306 flights
- Thursdays74% on time · p90 45 min · 300 flights
- Fridays73% on time · p90 65 min · 309 flights
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