A daylight view of Ball Arena amidst Denver's urban landscape, highlighting its architectural design. — flights from Seattle to Denver
SeattleDenver

Flights from Seattle to Denver

Nonstop flights from Seattle (SEA) to Denver (DEN) take about 2h 33m (1,645 km). Frontier Airlines, Alaska Airlines and United Airlines fly it. Lowest fare seen: $47 one-way, nonstop (12 Oct 2026).

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Book from $47 one-way

Photo of Denver: Noel Aph on Pexels.

When you land in Denver

The airport transfer and the few things worth sorting before you fly.

A daylight view of Ball Arena amidst Denver's urban landscape, highlighting its architectural design. — arriving in Denver

Airport transfer

DEN → Denver, booked before you fly

A private driver meets you in arrivals at a price agreed when you book. Book with Welcome Pickups.

See transfer prices
Alaska Airlines plane soaring through a bright sky with fluffy clouds in Seattle. — lounges at Seattle AirportSeattle Airport · 2 lounges
Before you flyAirport lounges at Seattle →
Trains, buses and taxi faresDEN to Denver: getting into town →

Things to book in Denver

All 10 things to do in Denver →
from €51.58
Elitch Gardens 4.4 · 60 Tiqets reviews
from €48.20
Denver Attraction Passes 4.5 · 54 Tiqets reviews
from €26.78
Denver Botanic Gardens 4.5 · 54 Tiqets reviews
Downtown Aquarium (Denver)from €48.20
Downtown Aquarium Denver 4.5 · 54 Tiqets reviews

Find hotels in Denver

Hotels, hostels & more · Expedia

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Airlines flying Seattle to Denver

Carriers on SEA–DEN according to our route data and nonstop fares seen as of 12 Oct 2026. Not a complete list.

✈ Frontier Airlinesnonstop fare seen✈ Alaska Airlinesnonstop fare seen✈ United Airlinesnonstop fare seen

More for this trip

Frequently asked questions — Seattle to Denver flights

How long is the flight from Seattle to Denver?
A nonstop flight from Seattle (SEA) to Denver (DEN) takes about 2h 33m, covering 1,645 km. That is an estimate from the distance — actual time varies with the airline, aircraft and winds, and connecting itineraries take longer.
How far is Seattle from Denver by air?
The great-circle distance between Seattle–Tacoma International Airport and Denver International Airport is 1,645 km (1,022 miles), a medium-haul route.
Which airlines fly from Seattle to Denver?
Airlines with flights or nonstop fares on the SEA–DEN route include Frontier Airlines, Alaska Airlines and United Airlines. This is not a complete list — schedules change by season, so check the current options before booking.
How much does a flight from Seattle to Denver cost?
The lowest one-way fare seen recently on SEA–DEN was $47 USD with Frontier Airlines (nonstop), departing 14 Nov 2026, found in fare searches as of 12 Oct 2026. Fares change constantly and depend on the date, so check the current price before booking.
Do I need a visa to travel from Seattle to Denver?
It depends on your passport. Some nationalities can enter Denver visa-free or get a visa on arrival; others must apply in advance. Use AirConnect's Visa Checker to see the rules for your passport.

Sources: fares from Travelpayouts flight-search data, seen 12 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.

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