Cheap Flights From Denver Intl. (DEN) To Seattle - Tacoma Intl. (SEA)

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Cheapest Flights from Denver (DEN) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $127 round trip and CA $63 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Dec 4 - Sun, Dec 7
DEN
Denver
SEA
Seattle
CA $127 Roundtrip, found 13 hours ago
CA $127
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Denver to Seattle, returning Sun, Dec 7, priced at CA $127 found 13 hours ago
Fri, Dec 12 - Wed, Jan 14
DEN
Denver
SEA
Seattle
CA $146 Roundtrip, found 23 hours ago
CA $146
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Fri, Dec 12 from Denver to Seattle, returning Wed, Jan 14, priced at CA $146 found 23 hours ago
Fri, Dec 12 - Wed, Jan 14
DEN
Denver
SEA
Seattle
CA $160 Roundtrip, found 23 hours ago
CA $160
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Fri, Dec 12 from Denver to Seattle, returning Wed, Jan 14, priced at CA $160 found 23 hours ago
Thu, Dec 4 - Thu, Dec 11
DEN
Denver
SEA
Seattle
CA $182 Roundtrip, found 1 day ago
CA $182
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Denver to Seattle, returning Thu, Dec 11, priced at CA $182 found 1 day ago
Thu, Dec 4 - Sun, Dec 7
DEN
Denver
SEA
Seattle
CA $183 Roundtrip, found 13 hours ago
CA $183
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Denver to Seattle, returning Sun, Dec 7, priced at CA $183 found 13 hours ago
Fri, Nov 28 - Thu, Dec 4
DEN
Denver
SEA
Seattle
CA $186 Roundtrip, found 2 hours ago
CA $186
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Fri, Nov 28 from Denver to Seattle, returning Thu, Dec 4, priced at CA $186 found 2 hours ago
Thu, Dec 4 - Sun, Dec 7
DEN
Denver
SEA
Seattle
CA $197 Roundtrip, found 13 hours ago
CA $197
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Denver to Seattle, returning Sun, Dec 7, priced at CA $197 found 13 hours ago
Fri, Dec 12 - Wed, Jan 14
DEN
Denver
SEA
Seattle
CA $208 Roundtrip, found 23 hours ago
CA $208
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Fri, Dec 12 from Denver to Seattle, returning Wed, Jan 14, priced at CA $208 found 23 hours ago
Thu, Dec 4 - Sun, Dec 7
DEN
Denver
SEA
Seattle
CA $211 Roundtrip, found 13 hours ago
CA $211
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Denver to Seattle, returning Sun, Dec 7, priced at CA $211 found 13 hours ago
Fri, Dec 12 - Wed, Jan 14
DEN
Denver
SEA
Seattle
CA $231 Roundtrip, found 23 hours ago
CA $231
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Fri, Dec 12 from Denver to Seattle, returning Wed, Jan 14, priced at CA $231 found 23 hours ago

Frequently asked questions

Are there direct flights from DIA airport to SEA?
Kick off your escape calm and relaxed and head straight to Sea-Tac Airport from DIA airport. United Airlines and Southwest Airlines are among the airlines that sell direct services on this route.
What airlines fly from DIA airport to Seattle - Tacoma Intl. Airport (SEA)?
With quite a few airlines operating direct flights from Denver Intl. Airport (DEN) to Seattle - Tacoma Intl. Airport (SEA), you shouldn't have a problem finding that perfect fare. Here are some of the top air carriers:

  • United Airlines - (UA) with 182 flights every month
  • Southwest Airlines - (WN) with 178 flights every month
  • Alaska Airlines - (AS) with 121 flights every month
  • Delta - (DL) with 121 flights every month

What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.