Historical on-time performance
Colorado Springs to Atlanta
1,185 miData through May 2026Source: US DOT · BTS
Flights on COS–ATL arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights
based on 550 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time86%Medianon timep9020 minCancel2.0%Flights550
Why flights run late
Delay causes
- Airline54%
- Weather3%
- Air traffic (NAS)4%
- Late aircraft39%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline82%
- Weather18%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 11 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly COS → ATL
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 88% on time.
- Mornings88% on time · p90 15 min · 856 flights
- Middays82% on time · p90 30 min · 416 flights
- Afternoons76% on time · p90 50 min · 165 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 90% on time.
- Thursdays90% on time · p90 10 min · 217 flights
- Wednesdays89% on time · p90 15 min · 193 flights · limited
- Tuesdays87% on time · p90 25 min · 195 flights · limited
- Fridays84% on time · p90 20 min · 218 flights
- Mondays82% on time · p90 35 min · 216 flights
- Sundays81% on time · p90 35 min · 221 flights
- Saturdays80% on time · p90 25 min · 177 flights · limited
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