Find Cheap Flights from Seattle/Tacoma Intl to Denver International (SEA - DEN)

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Good to Know

Low Season:
October
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
11%
expected price increase
Average price:
C$ 262
(avg. price over the last 2 weeks)
Good Deal:
C$ 180
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Denver International

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for C$ 180 or less.
The cheapest flight from Seattle/Tacoma Intl to Denver International was found, on average, 72 days before departure.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is October.
Morning departure is around 19% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Seattle/Tacoma Intl to Denver International Flights

How long does a flight from Seattle/Tacoma Intl to Denver International take?
An average nonstop flight takes 2h 38m, covering a distance of 1645 km.
How many flights are there between Seattle/Tacoma Intl and Denver International?
There are 543 (nonstop) flights between Seattle/Tacoma Intl and Denver International per week, averaging 78 per day.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Denver International?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines (C$ 116) and Delta (C$ 262)
Do I need a passport to fly between Seattle/Tacoma Intl and Denver International?
No.
Which airlines fly most frequently between Seattle/Tacoma Intl and Denver International?
Alaska Airlines (18 times daily), Emirates (9 times daily), Delta (9 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly from Seattle/Tacoma Intl to Denver International?
For Seattle/Tacoma Intl to Denver International, Monday is the cheapest day to fly on average and Friday is the most expensive. Flying from Denver International back to Seattle/Tacoma Intl, the best deals are generally found on Wednesday, with Friday being the most expensive.

Book cheap flights from Seattle/Tacoma Intl to Denver International (round-trip)

Airports
Origin
Seattle
C$ 116
only
C$ 116
Destination
Denver
C$ 116
only
C$ 116
Mon, 22 Jan
SEA
DEN
2h 38m
Wed, 24 Jan
DEN
SEA
3h 07m
C$ 116
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Fri, 19 Jan
SEA
DEN
7h 15m
Sun, 21 Jan
DEN
SEA
3h 23m
C$ 262
Trip: 3 days
8.5ExcellentShow reviews
Overall 8.5 Excellent
Based on 10 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
SEA
DEN
Good 6.0

Seats were uncomfortable

SYR
JFK
Good 7.0

Nothing Special

SEA
DEN
Okay 5.5

I've only experienced delayed flights with Delta ... and this was no exception. It wasn't weather-related, nor a late flight delivering a plane - just no ground crew to service the plane between flights.

SEA
DEN
Excellent 10.0

The staff of the flight were very friendly and attentive. They were great!

MSY
JFK
Excellent 10.0

The overhead bin did not stay down low enough so that I could place my bag in. It would lower then before I could place my bag raise slightly by a few inches. For someone of my height (5’5”) that was problematic. Fortunately another passenger saw my dilemma and held the bin lower to its full opening capacity. This also momentarily slowed down the boarding process.

Wed, 7 Feb
SEA
DEN
2h 38m
Tue, 13 Feb
DEN
SEA
3h 04m
C$ 133
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Thu, 1 Mar
SEA
DEN
2h 43m
Tue, 6 Mar
DEN
SEA
2h 58m
C$ 133
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Wed, 9 May
SEA
DEN
2h 51m
Thu, 10 May
DEN
SEA
2h 58m
C$ 133
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Fri, 2 Mar
SEA
DEN
2h 43m
Tue, 6 Mar
DEN
SEA
2h 58m
C$ 145
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Mon, 2 Apr
SEA
DEN
6h 50m
Mon, 9 Apr
DEN
SEA
2h 58m
C$ 182
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sat, 12 May
SEA
DEN
2h 42m
Mon, 14 May
DEN
SEA
2h 55m
C$ 195
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Mon, 2 Jul
SEA
DEN
2h 43m
Sat, 7 Jul
DEN
SEA
8h 05m
C$ 219
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Show more results
*
Prices are per person, are for e–tickets and include all taxes & fees in CAD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

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At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.

Seattle/Tacoma Intl to Denver International Flight Information

Avg. Flight Duration 2h 51m
Flights Arrive in Denver International
Flights Depart from Seattle/Tacoma Intl
Flight Price C$ 116
Distance 1645 km
Airlines Delta