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 $217 round trip and CA $96 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Dec 8 - Sat, Dec 13
DEN
Denver
SEA
Seattle
CA $217 Roundtrip, found 5 days ago
CA $217
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon, Dec 8 from Denver to Seattle, returning Sat, Dec 13, priced at CA $217 found 5 days ago
Fri, Nov 7 - Wed, Nov 12
DEN
Denver
SEA
Seattle
CA $218 Roundtrip, found 1 day ago
CA $218
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Nov 7 from Denver to Seattle, returning Wed, Nov 12, priced at CA $218 found 1 day ago
Fri, Nov 7 - Wed, Nov 12
DEN
Denver
SEA
Seattle
CA $222 Roundtrip, found 1 day ago
CA $222
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Nov 7 from Denver to Seattle, returning Wed, Nov 12, priced at CA $222 found 1 day ago
Mon, Dec 8 - Sat, Dec 13
DEN
Denver
SEA
Seattle
CA $230 Roundtrip, found 5 days ago
CA $230
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon, Dec 8 from Denver to Seattle, returning Sat, Dec 13, priced at CA $230 found 5 days ago
Fri, Nov 7 - Wed, Nov 12
DEN
Denver
SEA
Seattle
CA $232 Roundtrip, found 1 day ago
CA $232
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Nov 7 from Denver to Seattle, returning Wed, Nov 12, priced at CA $232 found 1 day ago
Fri, Nov 7 - Wed, Nov 12
DEN
Denver
SEA
Seattle
CA $235 Roundtrip, found 1 day ago
CA $235
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Nov 7 from Denver to Seattle, returning Wed, Nov 12, priced at CA $235 found 1 day ago
Mon, Dec 8 - Sat, Dec 13
DEN
Denver
SEA
Seattle
CA $242 Roundtrip, found 5 days ago
CA $242
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon, Dec 8 from Denver to Seattle, returning Sat, Dec 13, priced at CA $242 found 5 days ago
Fri, Nov 7 - Sun, Nov 16
DEN
Denver
SEA
Seattle
CA $244 Roundtrip, found 1 day ago
CA $244
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Nov 7 from Denver to Seattle, returning Sun, Nov 16, priced at CA $244 found 1 day ago
Fri, Nov 7 - Wed, Nov 12
DEN
Denver
SEA
Seattle
CA $246 Roundtrip, found 1 day ago
CA $246
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Nov 7 from Denver to Seattle, returning Wed, Nov 12, priced at CA $246 found 1 day ago
Fri, Oct 31 - Sun, Nov 2
DEN
Denver
SEA
Seattle
CA $247 Roundtrip, found 1 day ago
CA $247
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Oct 31 from Denver to Seattle, returning Sun, Nov 2, priced at CA $247 found 1 day 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.