GTF to SEA flight delays
Great Falls, MT (GTF) Seattle, WA (SEA) · 512 miles
106 flights · January 2025 – August 2026 · the publishing regulator
80%
Arrived on time
Within 15 minutes of schedule
0.94%
Cancelled
Share of scheduled flights
62 min
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
This route does worse than its own airport. GTF as a whole runs 9 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
Only SkyWest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
The Great Falls to Seattle route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on GTF to SEA. Flights ran closest to schedule in October and worst in February.
Every airline on GTF to SEA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 106 | 80% | 0.94% | 62 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SEA to GTF Seattle back to Great Falls 80% on time COther routes from Great Falls
Common questions
Are flights from Great Falls to Seattle usually delayed?
80% of flights on the GTF to SEA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Great Falls to Seattle?
Only SkyWest Airlines appears in the published record on this route, with 106 flights and 80% arriving on time.
How often are GTF to SEA flights cancelled?
0.94% of scheduled flights did not operate — about 9 in every thousand. That is in the normal range.
When GTF to SEA flights are late, how late are they?
About 62 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on GTF to SEA during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →