$158 Cheap Delta flights Denver (DEN) to Seattle (SEA)

View $158 flight on Sat, Jul 18, 2026Opens in a new window

$158 Cheap Delta flights Denver (DEN) to Seattle (SEA)

Prices were available within the past 7 days and start at $158 for one-way flights and $335 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 18 - Mon, Aug 24
DEN
Denver
SEA
Seattle
$335 Roundtrip, found 17 hours ago
$335
Roundtrip
found 17 hours ago
Select Delta flight, departing Tue, Aug 18 from Denver to Seattle, returning Mon, Aug 24, priced at $335 found 17 hours ago

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 $328
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $328

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

May is typically the cheapest month to fly

From $118 - $267 per traveler.

Travel information

Origin airport
Denver Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Frontier Airlines
Distance
1635 km
Average flight time
1 hour 58 mins

Explore a world of travel with Expedia