Best Time to Fly SEA to IND: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Indianapolis International
Data through July 2026 · Last updated October 18, 2026
565 flights were scheduled from Seattle (SEA) to Indianapolis (IND) in the last 12 months, and 77.2% 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.
November has been the best month (92% on time) and Sunday the weakest day of the week (70%).
1.2% of flights were cancelled, versus 1.8% nationally.
SEA to IND 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 | 77.2% | 42 min | 1.2% | 565 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to IND
On-time arrival % by scheduled departure hour (local time), 1,115 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 80.4% | 1.9% | 52 |
| 10am–11am | 71.6% | 0.6% | 535 |
| 11am–12pm | 79.5% | 2.5% | 120 |
| 4pm–5pm | Limited data | 14 | |
| 9pm–10pm | 73.5% | 2.2% | 136 |
| 10pm–11pm | 75.7% | 0.0% | 231 |
| 11pm–12am | Limited data | 27 | |
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 IND
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 | 24 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 74.5% | -1.7 pts | 0.0% | 55 |
| Summer peak (Jun 15 - Aug 15) | 66.3% | -10.0 pts | 0.8% | 246 |
| All other days | 76.3% | — | 1.0% | 790 |
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).