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Route Reliability

Colorado Springs → Atlanta

COS–ATL · 1,184 miles · Colorado Springs Airport to Hartsfield–Jackson Atlanta International Airport

85
Pretty Reliable
WanderNerd Reliability Score
89%
Arrive within 15 minutes
4 min early
Average arrival delay
1.9%
Cancelled
578
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 89% of the time across 578 flights. No comparison to make.

What the data says

Morning-you made the right choice.

COS–ATL flights departing between 6–9 AM arrived on time 94% of the time, versus 86% between 12–3 PM.

Saturdays have been rough.

COS–ATL flights arrived on time 98% of the time on Thursdays and just 82% on Saturdays. That gap is worth planning around.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon83%(89 flights)
  • Tue88%(83 flights)
  • Wed92%(84 flights)
  • Thu98%(83 flights)
  • Fri95%(81 flights)
  • Sat82%(51 flights)
  • Sun84%(89 flights)
On-time by departure window
  • 6–9 AM94%(250 flights)
  • 12–3 PM86%(310 flights)
On-time trend by month
90%
May

Jun 85% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%52
July 202589%55
August 202590%51
September 202596%49
October 202598%53
November 202590%50
December 202584%32
January 202682%28
February 202693%28
March 202684%49
April 202686%55
May 202690%58

Keep nerding

Based on 578 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.