DEN to SEA: which side of the plane should you sit on?
Denver (DEN) to Seattle (SEA) is a 1,645 km (1,022 mi), roughly 2h 26m westbound flight. Here is where the sun sits along that path, computed with the same astronomy as our live calculator.
On most daytime DEN to SEA departures the sun favors the left side — sit on the right (a window on the right) for shade.
Sun side by season and departure time
| Season | Morning (8 am) | Midday (1 pm) | Evening (6 pm) |
|---|---|---|---|
| March equinox | Right | Left | Left |
| June solstice | Right | Left | Left |
| September equinox | Right | Left | Left |
| December solstice | Left | Left | Night |
Frequently asked
Which side of the plane avoids the sun from DEN to SEA?
Across typical daytime departures, the sun predominantly hits the left side of the aircraft, so the right side stays shadier. Seat letters start at the left window, so choose the highest window letter (F on narrowbodies, K on many widebodies).
Which side has the sunset views on DEN to SEA flights?
For sunset views, flip the advice: on evening departures the sun sits on the left side of this route, so that is the side with the show.
How long is the flight from DEN to SEA?
The great-circle distance is 1,645 km (1,022 mi), which works out to roughly 2h 26m in the air on this westbound routing. Winds and routing move the real block time around that estimate.
Does the date or departure time change the answer?
Yes — that is why the table shows both. The sun's path shifts with the season, and a morning departure can put the glare on the opposite side compared to an evening one. For a specific flight, the calculator samples the sun along the whole route for your exact date and time.