Historical on-time performance
Indianapolis to Seattle
1,866 miData through Dec 2025Source: US DOT · BTS
Flights on IND–SEA arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 489 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesOn-time70%Medianon timep9045 minCancel1.0%Flights489
Why flights run late
Delay causes
- Airline19%
- Weather5%
- Air traffic (NAS)17%
- Late aircraft60%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IND → SEA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 73% to 77% on time.
- Mornings77% on time · p90 30 min · 604 flights
- Evenings73% on time · p90 45 min · 1,023 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 77% on time.
- Tuesdays77% on time · p90 40 min · 207 flights
- Wednesdays77% on time · p90 25 min · 224 flights
- Thursdays77% on time · p90 25 min · 237 flights
- Mondays76% on time · p90 40 min · 248 flights
- Sundays73% on time · p90 40 min · 235 flights
- Fridays73% on time · p90 45 min · 249 flights
- Saturdays71% on time · p90 55 min · 227 flights
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