JetSetAuthority

Route · United States and Canada

SEA Seattle ⇄ DEN Denver

Seattle–Tacoma International Airport (United States) and Denver International Airport (United States): great-circle distance, estimated scheduled flight time each way, time difference and jet lag.

Distance1,645 km1,022 mi888 nautical miles
SEA → DEN2 h 45 minestimated block time
DEN → SEA3 h 05 minestimated block time
Clock change+1 hDenver vs Seattle, today
Great-circle route from Seattle (SEA) to Denver (DEN)SEASeattleDENDenver
The shortest path over the Earth’s surface (great circle), drawn on a Natural Earth projection. Real flight paths bend around weather, winds and closed airspace.

Flight time each way

SEA → DEN

2 h 45 min

Estimated gate-to-gate scheduled time. Initial heading 114° (ESE).

Leave Seattle Sat 7 Nov, 10:00 local → arrive Denver Sat 7 Nov, 13:45 local.

DEN → SEA

3 h 05 min

Estimated gate-to-gate scheduled time. Initial heading 307° (NW).

Leave Denver Sat 7 Nov, 10:00 local → arrive Seattle Sat 7 Nov, 12:05 local.

SEA-bound flights are the slower direction by about 20 minutes in our estimate: the route runs mostly east–west through latitudes where the prevailing westerly winds at cruise height are strong, so heading east rides a tailwind and heading west fights a headwind. How we estimate it.

Distance

Great-circle distance1,645 km · 1,022 mi · 888 nmi
Initial heading114° (ESE) from SEA; 307° (NW) from DEN
Farthest from the equator47.4°N
Crossesneither the equator nor the 180th meridian
Share of the longest possible trip8% of the 20,015 km to the far side of the Earth

Time zones and jet lag

SEAAmerica/Los_Angeles — UTC−7 now; UTC−8 standard time, UTC−7 during daylight saving time
DENAmerica/Denver — UTC−6 now; UTC−7 standard time, UTC−6 during daylight saving time
DifferenceDenver is 1 hour ahead of Seattle today.

Jet lag, flying SEA → DEN. Your body clock has to move 1 hour earlier, like an eastward trip. A shift this small rarely causes much jet lag; most people feel normal within a day or so. Flying the other way, the shift is reversed.

General information, not medical advice.

The two airports

SEA Seattle–Tacoma International AirportSeattle, United States · longest runway 11,901 ft3,627 m DEN Denver International AirportDenver, United States · longest runway 16,000 ft4,877 m

More routes from SEA and DEN

SFOSEA San Francisco – Seattle 1,093 km679 mi · 2 h 20 min SEAANC Seattle – Anchorage 2,326 km1,445 mi · 3 h 50 min JFKSEA New York – Seattle 3,887 km2,415 mi · 5 h 55 min SEALHR Seattle – London 7,702 km4,786 mi · 9 h 25 min SEAAMS Seattle – Amsterdam 7,840 km4,872 mi · 9 h 40 min SINSEA Singapore – Seattle 12,979 km8,065 mi · 15 h DENPHX Denver – Phoenix 968 km601 mi · 2 h 15 min DFWDEN Dallas–Fort Worth – Denver 1,032 km641 mi · 2 h 20 min DENORD Denver – Chicago 1,426 km886 mi · 2 h 30 min ATLDEN Atlanta – Denver 1,927 km1,197 mi · 3 h 30 min JFKDEN New York – Denver 2,610 km1,622 mi · 4 h 20 min DENFRA Denver – Frankfurt 8,089 km5,026 mi · 9 h 45 min

Routes of a similar length

DFWCUN Dallas–Fort Worth – Cancún 1,657 km1,030 mi · 2 h 50 min BOMMLE Mumbai – Malé 1,658 km1,030 mi · 2 h 55 min LHRNAP London – Naples 1,630 km1,013 mi · 2 h 45 min BOMCCU Mumbai – Kolkata 1,666 km1,035 mi · 2 h 50 min

Need a different pair? The flight-time calculator works for any two of 3,245 airports. Not covered: which airlines fly this route, schedules, fares and live status — that data is proprietary and we don’t guess it.

Photos on airport pages are credited there. Estimates are rounded to 5 minutes; typical error about 13 minutes (validation).