Route Reliability
Seattle → Indianapolis
SEA–IND · 1,866 miles · Seattle–Tacoma International Airport to Indianapolis International Airport
- 74%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 1.2%
- Cancelled
- 565
- Flights in the data
Data through May 2026.
Alaska Airlines is the only airline in this data on this route, arriving on time 74% of the time across 565 flights. No comparison to make.
What the data says
Departure time hasn't mattered much.
On-time rates stay between 73% and 76% across the day.
Skip Saturday if you can.
SEA–IND flights arrived on time 78% of the time on Thursdays. On Saturdays: 68%.
Ticking up lately.
SEA–IND flights arrived on time 85% of the time over the last three months in the data, compared with 79% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon78%(87 flights)
- Tue75%(68 flights)
- Wed78%(76 flights)
- Thu78%(83 flights)
- Fri71%(85 flights)
- Sat68%(68 flights)
- Sun72%(89 flights)
- 9 AM–12 PM73%(347 flights)
- 9 PM–12 AM76%(209 flights)
Jun 64% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 64% | 59 |
| July 2025 | 55% | 60 |
| August 2025 | 56% | 59 |
| September 2025 | 71% | 51 |
| October 2025 | 89% | 44 |
| November 2025 | 87% | 39 |
| December 2025 | 71% | 41 |
| January 2026 | 78% | 27 |
| February 2026 | 88% | 25 |
| March 2026 | 82% | 38 |
| April 2026 | 88% | 51 |
| May 2026 | 84% | 62 |
Keep nerding
Based on 565 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.