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Cheap flights from Seattle to Colorado from $43

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 4/2. 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
12:24 pm - 4:15 pm
SEA
-
DEN
2h 51mnonstop
Frontier Logo
9:10 am - 11:19 am
DEN
-
SEA
3h 09mnonstop
$66Frontier
Fri, Mar 27 - Sun, Mar 29
Frontier Logo
12:00 pm - 3:51 pm
SEA
-
DEN
2h 51mnonstop
Frontier Logo
9:10 am - 11:19 am
DEN
-
SEA
3h 09mnonstop
$77Frontier
Sun, Mar 1 - Fri, Mar 6
Delta Logo
5:30 am - 11:15 am
SEA
-
COS
4h 45m1 stop
Delta Logo
7:55 am - 3:10 pm
COS
-
SEA
8h 15m1 stop
$137Delta
Thu, Feb 12 - Wed, Feb 18
Delta Logo
11:17 am - 10:23 pm
SEA
-
COS
10h 06m2 stops
Delta Logo
7:55 am - 3:10 pm
COS
-
SEA
8h 15m1 stop
$142Delta
Tue, Feb 10 - Wed, Feb 18
American Airlines Logo
6:00 am - 2:09 pm
SEA
-
COS
7h 09m1 stop
American Airlines Logo
6:12 am - 1:17 pm
COS
-
SEA
8h 05m1 stop
$159American Airlines
Fri, Jan 23 - Fri, Jan 30
United Airlines Logo
8:40 am - 2:25 pm
SEA
-
HDN
4h 45m1 stop
United Airlines Logo
1:32 pm - 6:26 pm
HDN
-
SEA
5h 54m1 stop
$209United Airlines
Sat, Jan 31 - Tue, Feb 3
American Airlines Logo
6:00 am - 2:05 pm
SEA
-
MTJ
7h 05m1 stop
American Airlines Logo
2:57 pm - 11:51 pm
MTJ
-
SEA
9h 54m1 stop
$211American Airlines
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
9:00 am - 4:13 pm
SEA
-
HDN
6h 13m1 stop
United Airlines Logo
7:00 am - 3:54 pm
HDN
-
SEA
9h 54m2 stops
$214United Airlines
Sat, Jan 31 - Tue, Feb 3
Alaska Airlines Logo
1:22 pm - 4:49 pm
SEA
-
HDN
2h 27mnonstop
Alaska Airlines Logo
5:29 pm - 7:21 pm
HDN
-
SEA
2h 52mnonstop
$267Alaska Airlines
Wed, Mar 18 - Sun, Mar 22
Alaska Airlines Logo
11:59 am - 3:43 pm
SEA
-
EGE
2h 44mnonstop
Alaska Airlines Logo
4:23 pm - 6:30 pm
EGE
-
SEA
3h 07mnonstop
$317Alaska Airlines
Sat, Feb 21 - Wed, Feb 25

Delta flights from Seattle to Colorado

Our best Delta deals on Seattle to Colorado flight tickets
Delta
Jan 24
SEA5:00 amSeattle/Tacoma Intl
5h 51m
1 stop
DEN11:51 amDenver Intl
Jan 24
DEN6:50 pmDenver Intl
3h 20m
SEA9:10 pmSeattle/Tacoma Intl
$127
Find similar
Delta
Jan 20
SEA5:30 amSeattle/Tacoma Intl
5h 21m
1 stop
DEN11:51 amDenver Intl
Jan 24
DEN6:23 pmDenver Intl
4h 59m
1 stop
SEA10:22 pmSeattle/Tacoma Intl
$137
Find similar
Delta
Feb 10
SEA11:17 amSeattle/Tacoma Intl
10h 06m
2 stops
COS10:23 pmColorado Springs
Feb 18
COS7:55 amColorado Springs
8h 15m
1 stop
SEA3:10 pmSeattle/Tacoma Intl
$142
Find similar

Frontier flights from Seattle to Colorado

Our best Frontier deals on Seattle to Colorado flight tickets
Frontier
Mar 27
SEA12:24 pmSeattle/Tacoma Intl
2h 51m
DEN4:15 pmDenver Intl
Mar 29
DEN9:10 amDenver Intl
3h 09m
SEA11:19 amSeattle/Tacoma Intl
$66
Find similar
Frontier
Mar 1
SEA12:00 pmSeattle/Tacoma Intl
2h 51m
DEN3:51 pmDenver Intl
Mar 6
DEN9:10 amDenver Intl
3h 09m
SEA11:19 amSeattle/Tacoma Intl
$77
Find similar
Frontier
Feb 2
SEA12:34 pmSeattle/Tacoma Intl
2h 51m
DEN4:25 pmDenver Intl
Feb 5
DEN9:10 amDenver Intl
3h 09m
SEA11:19 amSeattle/Tacoma Intl
$78
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 December 28, 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

Fri 3/27

12:24 pm-4:15 pm

Nonstop2h 51m

Denver Intl

Sun 3/29

9:10 am-11:19 am

Nonstop3h 09m

$66

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 3/1

12:00 pm-3:51 pm

Nonstop2h 51m

Denver Intl

Fri 3/6

9:10 am-11:19 am

Nonstop3h 09m

$77

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Thu 2/12

5:30 am-11:15 am

1 stop4h 45m

Colorado Springs

Wed 2/18

7:55 am-3:10 pm

1 stop8h 15m

$137

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Tue 2/10

11:17 am-10:23 pm

2 stops10h 06m

Colorado Springs

Wed 2/18

7:55 am-3:10 pm

1 stop8h 15m

$142

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Fri 1/23

6:00 am-2:09 pm

1 stop7h 09m

Colorado Springs

Fri 1/30

6:12 am-1:17 pm

1 stop8h 05m

$159

SeattleHayden

SEA - HDN

SEAHDN

Seattle/Tacoma Intl

Sat 1/31

8:40 am-2:25 pm

1 stop4h 45m

Hayden Yampa Valley

Tue 2/3

1:32 pm-6:26 pm

1 stop5h 54m

$209

SeattleMontrose

SEA - MTJ

SEAMTJ

Seattle/Tacoma Intl

Fri 1/30

6:00 am-2:05 pm

1 stop7h 05m

Montrose County

Fri 2/6

2:57 pm-11:51 pm

1 stop9h 54m

$211

SeattleHayden

SEA - HDN

SEAHDN

Seattle/Tacoma Intl

Sat 1/31

9:00 am-4:13 pm

1 stop6h 13m

Hayden Yampa Valley

Tue 2/3

7:00 am-3:54 pm

2 stops9h 54m

$214

SeattleHayden

SEA - HDN

SEAHDN

Seattle/Tacoma Intl

Wed 3/18

1:22 pm-4:49 pm

Nonstop2h 27m

Hayden Yampa Valley

Sun 3/22

5:29 pm-7:21 pm

Nonstop2h 52m

$267

SeattleVail

SEA - EGE

SEAEGE

Seattle/Tacoma Intl

Sat 2/21

11:59 am-3:43 pm

Nonstop2h 44m

Vail Eagle County

Wed 2/25

4:23 pm-6:30 pm

Nonstop3h 07m

$317

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 $168. The month of September is another great option to travel to Colorado, with average flight prices from Seattle averaging around $197.

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 $271. 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 $243. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $326 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 $215 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 $177 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

$115

Fastest flight time

2h 33m

Direct flights

Every day

Airports in Colorado

87 airports
The best one-way flight to Colorado from Seattle in the past 72 hours is $115. The best round-trip flight deal from Seattle to Colorado found on momondo in the last 72 hours is $214.
The fastest flight from Seattle to Colorado takes 2h 33m
Direct flights go from Seattle to Colorado every day.
There are 87 airports in Colorado. From Seattle there are direct flights to 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 $63Free CancellationRating
5.7
3,064 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $87Free CancellationRating
7.8
2,820 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $110Free CancellationRating
7.9
8,017 reviews
Search Delta flights
SouthwestPriceFrom $134Free CancellationRating
8.0
4,256 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $143Free CancellationRating
8.0
11,552 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $148Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
11,070 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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