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Flight distance & time
Seattle Tacoma International Airport → Denver International Airport
SEADEN
- Distance
- 1,644 km · 1,021 mi
- Flight time
- 02h 48m
- CO₂ per passenger
- 147 kg
This Seattle Tacoma International Airport → Denver International Airport route is 1,644 km (1,021 mi) end to end. The estimated flight time is 02h 48m, and a passenger's share of CO₂ works out at roughly 147 kg.
See the reverse route: Denver International Airport → Seattle Tacoma International Airport
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Your route
- FromSEASeattle Tacoma International AirportSeattle, Washington
- ToDENDenver International AirportDenver, Colorado
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~20 flights/day
Airlines on this route
Alaska AirlinesATIDelta Air LinesFrontier AirlinesSouthwest AirlinesUnited Airlines
Common questions
Seattle Tacoma International Airport to Denver International Airport FAQ
How far is Seattle Tacoma International Airport from Denver International Airport?
Seattle Tacoma International Airport (SEA) and Denver International Airport (DEN) are 1,644 km (1,021 mi) apart, measured along the great-circle route.
How long is the flight from Seattle Tacoma International Airport to Denver International Airport?
A direct SEA–DEN flight covers the distance in about 02h 48m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Seattle Tacoma International Airport to Denver International Airport produce?
A passenger's share of CO₂ on the SEA–DEN route is roughly 147 kg.
Which airlines fly from Seattle Tacoma International Airport to Denver International Airport?
Alaska Airlines, ATI, Delta Air Lines, Frontier Airlines, Southwest Airlines operate scheduled service between SEA and DEN.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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