New calculation
Flight distance & time
Seattle Tacoma International Airport → Great Falls International Airport
SEAGTF
- Distance
- 821 km · 510 mi
- Flight time
- 01h 46m
- CO₂ per passenger
- 73 kg
This Seattle Tacoma International Airport → Great Falls International Airport route is 821 km (510 mi) end to end. The estimated flight time is 01h 46m, and a passenger's share of CO₂ works out at roughly 73 kg.
See the reverse route: Great Falls International Airport → Seattle Tacoma International Airport
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Your route
- FromSEASeattle Tacoma International AirportSeattle, Washington
- ToGTFGreat Falls International AirportGreat Falls, Montana
Flight map
Track your lifetime distance flown across every trip.
Route service
We don't have scheduled-service data for this route — it may be operated by non-commercial or charter flights only.
Common questions
Seattle Tacoma International Airport to Great Falls International Airport FAQ
How far is Seattle Tacoma International Airport from Great Falls International Airport?
Seattle Tacoma International Airport (SEA) and Great Falls International Airport (GTF) are 821 km (510 mi) apart, measured along the great-circle route.
How long is the flight from Seattle Tacoma International Airport to Great Falls International Airport?
A direct SEA–GTF flight covers the distance in about 01h 46m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Seattle Tacoma International Airport to Great Falls International Airport produce?
A passenger's share of CO₂ on the SEA–GTF route is roughly 73 kg.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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