Best Time to Fly SEA to CLE: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Cleveland-Hopkins International
Data through July 2026 · Last updated October 18, 2026
455 flights were scheduled from Seattle (SEA) to Cleveland (CLE) in the last 12 months, and 77.4% of those that flew arrived on time, in line with the US average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (81% on time) and September the worst month (58%).
The cancellation rate was 0.7% (US average 1.8%).
SEA to CLE on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlines | 77.4% | 41 min | 0.7% | 455 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to CLE
On-time arrival % by scheduled departure hour (local time), 922 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 77.2% | 0.0% | 114 |
| 10am–11am | 77.8% | 0.3% | 347 |
| 11am–12pm | 69.5% | 1.8% | 224 |
| 9pm–10pm | 59.5% | 0.0% | 121 |
| 10pm–11pm | 83.5% | 0.9% | 116 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA to CLE
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 90.0% | +15.4 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 70.6% | -4.0 pts | 0.4% | 246 |
| All other days | 74.6% | — | 0.8% | 634 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).