Historical on-time performance
Seattle to Great Falls
512 miData through Dec 2025Source: US DOT · BTS
Flights on SEA–GTF arrive on time 92% of the time over the last 12 months.
On-time rate92%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 61 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time92%Medianon timep9010 minCancel0.0%Flights61
Why flights run late
Delay causes
- Airline57%
- Weather0%
- Air traffic (NAS)34%
- Late aircraft9%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → GTF
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 86% to 88% on time.
- Middays88% on time · p90 15 min · 519 flights
- Mornings86% on time · p90 15 min · 111 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 93% on time.
- Thursdays93% on time · p90 10 min · 87 flights · limited
- Sundays91% on time · p90 10 min · 91 flights · limited
- Saturdays90% on time · p90 20 min · 87 flights · limited
- Wednesdays88% on time · p90 15 min · 92 flights · limited
- Tuesdays87% on time · p90 15 min · 91 flights · limited
- Fridays85% on time · p90 15 min · 92 flights · limited
- Mondays82% on time · p90 30 min · 90 flights · limited
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