$49 Cheap Delta flights Denver (DEN) to Seattle (SEA)

View $49 flight on Wed, Apr 15, 2026Opens in a new window

$49 Cheap Delta flights Denver (DEN) to Seattle (SEA)

Prices were available within the past 7 days and start at $49 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Apr 15 - Sun, Apr 19
DEN
Denver
SEA
Seattle
$97 Roundtrip, found 5 days ago
$97
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Apr 15 from Denver to Seattle, returning Sun, Apr 19, priced at $97 found 5 days ago
Delta
Wed, Feb 18 - Wed, Feb 25
DEN
Denver
SEA
Seattle
$117 Roundtrip, found 6 days ago
$117
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Feb 18 from Denver to Seattle, returning Wed, Feb 25, priced at $117 found 6 days ago
Delta
Wed, Feb 18 - Wed, Feb 25
DEN
Denver
SEA
Seattle
$135 Roundtrip, found 6 days ago
$135
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Feb 18 from Denver to Seattle, returning Wed, Feb 25, priced at $135 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 $234
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $234
Flights from Denver (DEN) to Seattle (SEA)
Origin airport
Denver Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United
Popular airline
Frontier Airlines
Distance
1635 km
Average flight time
2 hours 5 mins