Which departure time was most reliable for CMH to SEA?
Among qualifying CMH-to-SEA departure window results, Early morning had the highest on-time rate: 81.5% of 157 flights. Evening was lowest at 64.1% across 304 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 157 | 81.5% | 7.0% | 2.5% |
| Evening | 304 | 64.1% | 19.7% | 0.7% |
Which weekday was most reliable for CMH to SEA?
Among qualifying CMH-to-SEA weekday results, Tuesday had the highest on-time rate: 81.4% of 59 flights. Thursday was lowest at 63.6% across 66 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 72 | 70.8% | 16.7% | 2.8% |
| Tuesday | 59 | 81.4% | 10.2% | 0.0% |
| Wednesday | 67 | 68.7% | 17.9% | 1.5% |
| Thursday | 66 | 63.6% | 22.7% | 0.0% |
| Friday | 75 | 70.7% | 13.3% | 0.0% |
| Saturday | 53 | 69.8% | 13.2% | 1.9% |
| Sunday | 72 | 66.7% | 13.9% | 2.8% |
Which airline was most reliable for CMH to SEA?
Only Alaska Airlines met the CMH-to-SEA airline threshold: 70.0% of 460 scheduled flights arrived on time during July 2025–June 2026.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 460 | 70.0% | 15.4% | 1.3% |
| American Airlines | 1 | 100.0% | 0.0% | 0.0% |
| Delta Air Lines | 1 | 100.0% | 0.0% | 0.0% |
| United Airlines | 1 | 100.0% | 0.0% | 0.0% |
| Southwest Airlines | 1 | 0.0% | 100.0% | 0.0% |
Which month was most reliable for CMH to SEA?
Among qualifying CMH-to-SEA month results, September 2025 had the highest on-time rate: 88.5% of 52 flights. December 2025 was lowest at 38.7% across 31 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 61 | 63.9% | 18.0% | 1.6% |
| August 2025 | 57 | 73.7% | 8.8% | 0.0% |
| September 2025 | 52 | 88.5% | 9.6% | 0.0% |
| October 2025 | 33 | 75.8% | 9.1% | 0.0% |
| November 2025 | 29 | 82.8% | 13.8% | 0.0% |
| December 2025 | 31 | 38.7% | 45.2% | 0.0% |
| January 2026 | 23 | 47.8% | 26.1% | 8.7% |
| February 2026 | 21 | 71.4% | 19.0% | 4.8% |
| March 2026 | 26 | 53.8% | 19.2% | 3.8% |
| April 2026 | 30 | 70.0% | 13.3% | 3.3% |
| May 2026 | 44 | 72.7% | 13.6% | 0.0% |
| June 2026 | 57 | 77.2% | 8.8% | 0.0% |
What drove CMH to SEA delay minutes?
Late aircraft was the largest recorded CMH-to-SEA delay category, accounting for 40.9% of 6,570 BTS-attributed delay minutes during July 2025–June 2026.
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