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Cheap flights from Seattle to Colorado from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Colorado departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:54 pm - 6:43 pmSEA-DEN
2h 49mnonstop
Frontier Logo
10:16 am - 12:26 pmDEN-SEA
3h 10mnonstop
$92Frontier
Find Deal
Sun, Jan 11 - Fri, Jan 16
Multiple Airlines Logo
1:37 pm - 5:30 pmSEA-DEN
2h 53mnonstop
Multiple Airlines Logo
8:02 pm - 10:13 pmDEN-SEA
3h 11mnonstop
$94Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 19
Delta Logo
7:35 pm - 11:21 pmSEA-DEN
2h 46mnonstop
Delta Logo
6:05 am - 8:15 amDEN-SEA
3h 10mnonstop
$97Delta
Find Deal
Fri, Dec 12 - Mon, Dec 15
Delta Logo
7:35 pm - 11:21 pmSEA-DEN
2h 46mnonstop
Delta Logo
6:05 am - 8:15 amDEN-SEA
3h 10mnonstop
$99Delta
Find Deal
Thu, Dec 4 - Sun, Dec 7
Alaska Airlines Logo
7:55 am - 11:44 amSEA-DEN
2h 49mnonstop
Alaska Airlines Logo
11:41 am - 5:35 pmDEN-SEA
6h 54m1 stop
$109Alaska Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6
Alaska Airlines Logo
5:20 am - 10:35 amSEA-DEN
4h 15m1 stop
Alaska Airlines Logo
1:23 pm - 3:26 pmDEN-SEA
3h 03mnonstop
$113Alaska Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 19
Southwest Logo
6:15 am - 2:10 pmSEA-DEN
6h 55m2 stops
Southwest Logo
10:35 pm - 12:35 amDEN-SEA
3h 00mnonstop
$128Southwest
Find Deal
Thu, Dec 4 - Sun, Dec 7
Southwest Logo
9:35 am - 4:35 pmSEA-COS
6h 00m1 stop
Southwest Logo
6:35 am - 12:05 pmCOS-SEA
6h 30m1 stop
$159Southwest
Find Deal
Thu, Dec 4 - Wed, Dec 10
United Airlines Logo
5:00 am - 12:39 pmSEA-DRO
6h 39m1 stop
United Airlines Logo
1:41 pm - 11:16 pmDRO-SEA
10h 35m2 stops
$206United Airlines
Find Deal
Sun, Mar 1 - Wed, Mar 11
United Airlines Logo
5:00 am - 12:30 pmSEA-MTJ
6h 30m1 stop
United Airlines Logo
2:14 pm - 9:58 pmMTJ-SEA
8h 44m1 stop
$209United Airlines
Find Deal
Fri, Jan 9 - Mon, Jan 12

Frontier flights from Seattle to Colorado

Our best Frontier deals on Seattle to Colorado flight tickets
Frontier
Jan 11
SEA2:54 pmSeattle/Tacoma Intl
2h 49m
DEN6:43 pmDenver Intl
Jan 16
DEN10:16 amDenver Intl
3h 10m
SEA12:26 pmSeattle/Tacoma Intl
$92
Find similar
Frontier
Nov 4
SEA1:37 pmSeattle/Tacoma Intl
2h 53m
DEN5:30 pmDenver Intl
Nov 18
DEN9:58 amDenver Intl
3h 09m
SEA12:07 pmSeattle/Tacoma Intl
$93
Find similar
Frontier
Jan 3
SEA2:54 pmSeattle/Tacoma Intl
2h 49m
DEN6:43 pmDenver Intl
Jan 19
DEN10:16 amDenver Intl
3h 10m
SEA12:26 pmSeattle/Tacoma Intl
$96
Find similar

Alaska Airlines flights from Seattle to Colorado

Our best Alaska Airlines deals on Seattle to Colorado flight tickets
Alaska Airlines
Dec 3
SEA7:55 amSeattle/Tacoma Intl
2h 49m
DEN11:44 amDenver Intl
Dec 6
DEN11:41 amDenver Intl
6h 54m
1 stop
SEA5:35 pmSeattle/Tacoma Intl
$109
Find similar
Alaska Airlines
Nov 19
SEA5:20 amSeattle/Tacoma Intl
4h 15m
1 stop
DEN10:35 amDenver Intl
Nov 19
DEN1:23 pmDenver Intl
3h 03m
SEA3:26 pmSeattle/Tacoma Intl
$113
Find similar
Alaska Airlines
Dec 10
SEA11:02 amSeattle/Tacoma Intl
2h 44m
DEN2:46 pmDenver Intl
Dec 13
DEN6:59 pmDenver Intl
6h 13m
1 stop
SEA12:12 amSeattle/Tacoma Intl
$123
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Colorado that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Seattle to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 1/11

2:54 pm-6:43 pm

Nonstop2h 49m

Denver Intl

Fri 1/16

10:16 am-12:26 pm

Nonstop3h 10m

$92

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 11/19

1:37 pm-5:30 pm

Nonstop2h 53m

Denver Intl

Wed 11/19

8:02 pm-10:13 pm

Nonstop3h 11m

$94

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 12/12

7:35 pm-11:21 pm

Nonstop2h 46m

Denver Intl

Mon 12/15

6:05 am-8:15 am

Nonstop3h 10m

$97

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 12/4

7:35 pm-11:21 pm

Nonstop2h 46m

Denver Intl

Sun 12/7

6:05 am-8:15 am

Nonstop3h 10m

$99

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 12/3

7:55 am-11:44 am

Nonstop2h 49m

Denver Intl

Sat 12/6

11:41 am-5:35 pm

1 stop6h 54m

$109

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 11/19

5:20 am-10:35 am

1 stop4h 15m

Denver Intl

Wed 11/19

1:23 pm-3:26 pm

Nonstop3h 03m

$113

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 12/4

6:15 am-2:10 pm

2 stops6h 55m

Denver Intl

Sun 12/7

10:35 pm-12:35 am

Nonstop3h 00m

$128

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Thu 12/4

9:35 am-4:35 pm

1 stop6h 00m

Colorado Springs

Wed 12/10

6:35 am-12:05 pm

1 stop6h 30m

$159

SeattleDurango

SEA - DRO

SEADRO

Seattle/Tacoma Intl

Sun 3/1

5:00 am-12:39 pm

1 stop6h 39m

Durango La Plata County

Wed 3/11

1:41 pm-11:16 pm

2 stops10h 35m

$206

SeattleMontrose

SEA - MTJ

SEAMTJ

Seattle/Tacoma Intl

Fri 1/9

5:00 am-12:30 pm

1 stop6h 30m

Montrose County

Mon 1/12

2:14 pm-9:58 pm

1 stop8h 44m

$209

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Colorado from

How to get the cheapest flight ticket from Seattle to Colorado

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Seattle, with most prices found around $188. The month of October is another great option to travel to Colorado, with average flight prices from Seattle averaging around $188.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Seattle to Colorado is on a Friday when prices can be found for as low as $278. On the other hand, Monday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $343.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is at noon when flights can be purchased for as low as $242. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $332 per ticket.

What is the cheapest Seattle/Tacoma Intl to Colorado flight route?

Fly from Seattle/Tacoma Intl to Denver Intl for the best Seattle/Tacoma Intl - Colorado flight prices

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $214 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Seattle for as low as $188 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Colorado flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Colorado flights?

No. A direct flight is the cheapest option for a flight between Seattle to Colorado.

Cheap Seattle to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Colorado

Best Price Found

$119

Fastest flight time

2h 30m

Direct flights

Every day

Airports in Colorado

3 airports
The best one-way flight to Colorado from Seattle in the past 72 hours is $119. The best round-trip flight deal from Seattle to Colorado found on momondo in the last 72 hours is $192.
The fastest flight from Seattle to Colorado takes 2h 30m
Direct flights go from Seattle to Colorado every day.
There are 3 airports near Colorado: Vail Eagle County (EGE), Hayden Yampa Valley (HDN), Denver Intl (DEN)
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Colorado?

    Prices for flights from Seattle/Tacoma Intl Airport to Colorado refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Colorado?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Colorado?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Colorado.

  • What documentation or ID do you need to fly to Colorado?

    The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Colorado?

Best airlines flying from Seattle to Colorado

Compare and see reviews for airlines that fly from Seattle to Colorado with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $70Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $87Free CancellationRating
7.8
2,797 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $118Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
DeltaPriceFrom $122Free CancellationRating
7.9
7,993 reviews
Search Delta flights
United AirlinesPriceFrom $154Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $168Free CancellationRating
8.0
11,214 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
11,030 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Colorado?

Finding the right flight to Colorado from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Colorado quick and easy, saving you time and money.

Can I find flights from Seattle to Colorado with flexible booking policies on momondo?

Yes. All flights to Colorado from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Colorado?

Once all potential Seattle to Colorado flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Colorado right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Colorado from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Colorado trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Sat 11/29
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