$86 Cheap United flights Denver (DEN) to Seattle (SEA)

View $86 flight on Wed, Apr 15, 2026Opens in a new window

$86 Cheap United flights Denver (DEN) to Seattle (SEA)

Prices were available within the past 7 days and start at $86 for one-way flights and $91 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Feb 18 - Wed, Feb 25
DEN
Denver
SEA
Seattle
$91 Roundtrip, found 6 days ago
$91
Roundtrip
found 6 days ago
Select United flight, departing Wed, Feb 18 from Denver to Seattle, returning Wed, Feb 25, priced at $91 found 6 days ago
United
Wed, Feb 18 - Wed, Feb 25
DEN
Denver
SEA
Seattle
$116 Roundtrip, found 6 days ago
$116
Roundtrip
found 6 days ago
Select United flight, departing Wed, Feb 18 from Denver to Seattle, returning Wed, Feb 25, priced at $116 found 6 days ago

Find the cheapest month to fly from Denver (DEN) to Seattle (SEA)

February is typically the cheapest month to fly

From $58 - $143 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $113
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $113
Flights from Denver (DEN) to Seattle (SEA)
Origin airport
Denver Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
American Airlines
Distance
1635 km
Average flight time
2 hours 5 mins