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DEN to SEA: distance & flight time
Denver (Denver International Airport) → Seattle (Seattle Tacoma International Airport)
1,022 mi
1,645 km · 888 nm
2h 41m
estimated nonstop flight time
-1h
time difference · heading northwest
See live DEN→SEA fares Phone-only fares on this route — call free
Flight time details
1,022 miles nonstop takes roughly 2h 41m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- DEN — Denver International Airport · Denver, United States
- SEA — Seattle Tacoma International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near DEN
- BFK · Buckley Air Force Base12 mi away
- APA · Centennial Airport22 mi away
- BJC · Rocky Mountain Metropolitan Airport24 mi away
- WBU · Boulder Municipal Airport32 mi away
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is DEN from SEA?
The flight distance from Denver (DEN) to Seattle (SEA) is 1,022 miles (1,645 km, 888 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEN to SEA?
A nonstop flight takes about 2h 41m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from DEN to SEA?
Nonstop service on DEN–SEA depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 2h 41m nonstop estimate.
What is the time difference between Denver and Seattle?
Seattle is 1 hour behind Denver.
What is the cheapest way to fly from DEN to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEN–SEA that never appear on search engines, with no booking fees.
Why are some DEN to SEA fares phone-only?
Consolidator contracts let us sell certain DEN–SEA tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.