John Glenn Columbus International Airport (CMH) delays & on-time performance
Columbus, Ohio · 40 nonstop destinations · 11 airlines · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CMH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
On-time arrivals
81%
arrived < 15 min late
Cancelled
2.0%
904 flights
Avg arrival delay
15 min
75 min when late
Departed on time
81%
avg taxi-out 16 min
Figures cover 44,711 departures from CMH; on-time is measured at arrival. Arrivals into CMH were on time 77% of the time.
Key facts
- Flights departing John Glenn Columbus International Airport (CMH) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2% were cancelled, and 7% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (88% on time); United Airlines was the least (74%).
- Departures scheduled around 5am did best (94% on time); around 8pm did worst (67%).
- The largest source of delay minutes was late-arriving aircraft (36%).
Most delayed routes from CMH
Lowest on-time arrival rates among regularly flown routes.
- DCA · Washington70%2,051 flts
- SEA · Seattle72%464 flts
- ORD · Chicago76%4,930 flts
- MCO · Orlando78%2,148 flts
- FLL · Fort Lauderdale78%764 flts
- LAX · Los Angeles78%464 flts
- IAH · Houston78%522 flts
- DAL · Dallas80%535 flts
- LAS · Las Vegas80%898 flts
- LGA · New York80%3,048 flts
Most reliable routes from CMH
Highest on-time arrival rates among regularly flown routes.
- SLC · Salt Lake City90%363 flts
- BWI · Baltimore88%1,048 flts
- MSP · Minneapolis86%850 flts
- DTW · Detroit86%1,462 flts
- ATL · Atlanta85%3,155 flts
- IAD · Washington85%979 flts
- STL · St. Louis85%673 flts
- CLT · Charlotte84%2,046 flts
- JFK · New York84%1,601 flts
- TPA · Tampa84%901 flts
Best airline at CMH
Departures from this airport, ranked by on-time arrival.
| Airline | On time | Cancelled | Avg delay | Routes | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 88% | 1.4% | 12 min | 10 | 3,726 |
| Republic Airways | 83% | 3.1% | 12 min | 12 | 13,080 |
| American Airlines | 82% | 2.2% | 21 min | 9 | 4,181 |
| Envoy Air | 81% | 1.1% | 17 min | 6 | 3,076 |
| Southwest Airlines | 81% | 1.0% | 12 min | 24 | 12,293 |
| PSA Airlines | 76% | 3.8% | 21 min | 5 | 1,702 |
| SkyWest Airlines | 76% | 3.0% | 29 min | 6 | 1,344 |
| Spirit Airlines | 75% | 3.4% | 21 min | 7 | 1,009 |
| United Airlines | 74% | 1.4% | 23 min | 9 | 3,302 |
| Alaska Airlines | 72% | 1.1% | 15 min | 1 | 460 |
| Frontier Airlines | 67% | 2.2% | 29 min | 4 | 538 |
Best time to fly out of CMH
On-time arrival rate by scheduled departure hour (local time).
- 5am94%2,260 flts
- 6am90%5,933 flts
- 7am87%4,282 flts
- 8am88%3,381 flts
- 9am86%1,872 flts
- 10am86%2,404 flts
- 11am85%2,876 flts
- 12pm79%2,668 flts
- 1pm80%2,132 flts
- 2pm73%2,190 flts
- 3pm72%2,379 flts
- 4pm73%2,341 flts
- 5pm68%3,175 flts
- 6pm72%3,129 flts
- 7pm72%2,076 flts
- 8pm67%1,258 flts
Monthly trend
Why departures were late
- Late-arriving aircraft36%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion29%
- Extreme weather3%
- Security0%
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.