CMH to ATL flight delays & on-time performance
Nonstop flights from John Glenn Columbus International Airport to Hartsfield Jackson Atlanta International Airport · 447 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CMH or ATL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Columbus (CMH) to Atlanta (ATL) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.6% were cancelled, and 6% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (87% on time); Southwest Airlines was the least (82%).
- Departures scheduled around 3pm did best (93% on time); around 2pm did worst (75%).
- Wednesday was the most reliable day to fly (93% on time) and Sunday the least (79%).
- The largest source of delay minutes was late-arriving aircraft (37%).
Which airline is most on time from CMH to ATL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 87% | 1.6% | 12 min | 5.8% | 2,694 |
| Southwest Airlines | 82% | 0.9% | 10 min | 3.8% | 322 |
| Frontier Airlines | 53% | 2.9% | 33 min | 17.0% | 139 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am91%361 flights
- 7am92%336 flights
- 8am86%298 flights
- 9am89%110 flights
- 10am92%182 flights
- 11am87%192 flights
- 12pm82%393 flights
- 1pm88%263 flights
- 2pm75%95 flights
- 3pm93%138 flights
- 4pm84%216 flights
- 5pm78%122 flights
- 6pm77%314 flights
- 7pm77%111 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%1.0% cancelled
- Tuesday89%1.6% cancelled
- Wednesday93%0.2% cancelled
- Thursday88%0.2% cancelled
- Friday83%1.8% cancelled
- Saturday86%2.1% cancelled
- Sunday79%3.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft37%
- Airline (crew, maintenance, cleaning, fueling)37%
- Air traffic control & airport congestion23%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)68%
- Extreme weather32%
- Air traffic control & airport congestion0%
- Security0%
CMH to ATL: common questions
- How often are CMH to ATL flights on time?
- 85% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Columbus to Atlanta cancelled?
- 1.6% of scheduled flights were cancelled (50 of 3,155).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 83 min behind schedule on average, and 6.1% of flights were an hour or more late.
- How long is taxi time at CMH?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ATL to CMH — 80% on time
More flights from Columbus
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: CMH → ATL, nonstop flights by US airlines that report to the DOT. How we calculate this.