How many flights depart from Seattle to Colorado on average per day?

40 flights are operational daily from Seattle to Colorado as of July 2025. The most popular departure time for this route is 3:00PM, with 46% of flights per day taking off in the afternoon.

How many flights depart from Seattle to Colorado on average per week?

The number of flights available between Seattle and Colorado is 284 per week as of July 2025. The most frequent departure day is Thu, with 20% of weekly flights leaving on this day.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Colorado?

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Colorado

What airlines fly to Colorado?

Frontier, United Airlines and Delta are the top three most popular airlines that fly to Colorado from Seattle according to our data. Frontier is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 7 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

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?

There are 7 operators available for flights from Seattle/Tacoma Intl Airport to Colorado as of July 2025.

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.

$49 Cheap Flights from Seattle to Colorado in 2025

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Find the cheapest flights from Seattle to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:00 am - 10:53 amSEA-DEN

2h 53mnonstop

10:29 pm - 12:30 amDEN-SEA

3h 01mnonstop

$71Frontier

Find Deal

Sat, Oct 4 - Sun, Oct 5

6:00 am - 9:51 amSEA-DEN

2h 51mnonstop

8:55 pm - 11:02 pmDEN-SEA

3h 07mnonstop

$79Frontier

Find Deal

Thu, Oct 16 - Wed, Oct 22

11:55 pm - 10:16 amSEA-COS

9h 21m1 stop

5:55 pm - 10:14 pmCOS-SEA

5h 19m1 stop

$197Delta

Find Deal

Tue, Aug 26 - Tue, Sep 2

7:10 am - 5:15 pmSEA-COS

9h 05m2 stops

5:55 pm - 10:14 pmCOS-SEA

5h 19m1 stop

$202Delta

Find Deal

Tue, Aug 26 - Tue, Sep 2

5:02 am - 10:54 amSEA-COS

4h 52m1 stop

10:30 am - 3:53 pmCOS-SEA

6h 23m1 stop

$217United Airlines

Find Deal

Wed, Sep 3 - Sat, Sep 6

5:02 am - 12:36 pmSEA-GJT

6h 34m1 stop

6:05 pm - 10:59 pmGJT-SEA

5h 54m1 stop

$229United Airlines

Find Deal

Fri, Aug 22 - Mon, Aug 25

6:45 am - 5:00 pmSEA-COS

9h 15m2 stops

5:00 pm - 10:30 pmCOS-SEA

6h 30m1 stop

$243Southwest

Find Deal

Wed, Sep 3 - Sat, Sep 6

5:15 am - 10:40 amSEA-COS

4h 25m1 stop

6:50 pm - 12:20 amCOS-SEA

6h 30m1 stop

$262Southwest

Find Deal

Wed, Sep 3 - Sun, Sep 7

12:31 pm - 12:21 amSEA-GJT

10h 50m2 stops

11:45 am - 6:52 pmGJT-SEA

8h 07m1 stop

$324Alaska Airlines

Find Deal

Thu, Aug 14 - Sat, Aug 16

3:35 pm - 1:25 pmSEA-ASE

20h 50m1 stop

7:00 pm - 9:00 amASE-SEA

15h 00m1 stop

$334Alaska Airlines

Find Deal

Fri, Jan 16 - Thu, Jan 22

Frontier flights from Seattle to Colorado

Our best Frontier deals on Seattle to Colorado flight tickets

Frontier

Oct 4

SEA7:00 amSeattle/Tacoma Intl

2h 53m

DEN10:53 amDenver Intl

Oct 5

DEN10:29 pmDenver Intl

3h 01m

SEA12:30 amSeattle/Tacoma Intl

$71

Find similar

Frontier

Oct 16

SEA6:00 amSeattle/Tacoma Intl

2h 51m

DEN9:51 amDenver Intl

Oct 22

DEN8:55 pmDenver Intl

3h 07m

SEA11:02 pmSeattle/Tacoma Intl

$79

Find similar

Frontier

Oct 7

SEA6:00 amSeattle/Tacoma Intl

2h 51m

DEN9:51 amDenver Intl

Oct 10

DEN10:29 pmDenver Intl

3h 02m

SEA12:31 amSeattle/Tacoma Intl

$83

Find similar

Delta flights from Seattle to Colorado

Our best Delta deals on Seattle to Colorado flight tickets

Delta

Aug 26

SEA11:55 pmSeattle/Tacoma Intl

9h 21m

1 stop

COS10:16 amColorado Springs

Sep 2

COS5:55 pmColorado Springs

5h 19m

1 stop

SEA10:14 pmSeattle/Tacoma Intl

$197

Find similar

Delta

Aug 26

SEA7:10 amSeattle/Tacoma Intl

9h 05m

2 stops

COS5:15 pmColorado Springs

Sep 2

COS5:55 pmColorado Springs

5h 19m

1 stop

SEA10:14 pmSeattle/Tacoma Intl

$202

Find similar

Delta

Aug 27

SEA1:30 pmSeattle/Tacoma Intl

7h 48m

1 stop

COS10:18 pmColorado Springs

Sep 2

COS5:55 pmColorado Springs

5h 19m

1 stop

SEA10:14 pmSeattle/Tacoma Intl

$207

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 10/4

7:00 am-10:53 am

Nonstop2h 53m

Denver Intl

Sun 10/5

10:29 pm-12:30 am

Nonstop3h 01m

$71

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 10/16

6:00 am-9:51 am

Nonstop2h 51m

Denver Intl

Wed 10/22

8:55 pm-11:02 pm

Nonstop3h 07m

$79

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Tue 8/26

11:55 pm-10:16 am

1 stop9h 21m

Colorado Springs

Tue 9/2

5:55 pm-10:14 pm

1 stop5h 19m

$197

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Tue 8/26

7:10 am-5:15 pm

2 stops9h 05m

Colorado Springs

Tue 9/2

5:55 pm-10:14 pm

1 stop5h 19m

$202

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Wed 9/3

5:02 am-10:54 am

1 stop4h 52m

Colorado Springs

Sat 9/6

10:30 am-3:53 pm

1 stop6h 23m

$217

SeattleGrand Junction

SEA - GJT

SEAGJT

Seattle/Tacoma Intl

Fri 8/22

5:02 am-12:36 pm

1 stop6h 34m

Grand Junction Regnl

Mon 8/25

6:05 pm-10:59 pm

1 stop5h 54m

$229

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Wed 9/3

6:45 am-5:00 pm

2 stops9h 15m

Colorado Springs

Sat 9/6

5:00 pm-10:30 pm

1 stop6h 30m

$243

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Wed 9/3

5:15 am-10:40 am

1 stop4h 25m

Colorado Springs

Sun 9/7

6:50 pm-12:20 am

1 stop6h 30m

$262

SeattleGrand Junction

SEA - GJT

SEAGJT

Seattle/Tacoma Intl

Thu 8/14

12:31 pm-12:21 am

2 stops10h 50m

Grand Junction Regnl

Sat 8/16

11:45 am-6:52 pm

1 stop8h 07m

$324

SeattleAspen

SEA - ASE

SEAASE

Seattle/Tacoma Intl

Fri 1/16

3:35 pm-1:25 pm

1 stop20h 50m

Aspen Pitkin County

Thu 1/22

7:00 pm-9:00 am

1 stop15h 00m

$334

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Colorado?

The month of October is, on average, the cheapest month to fly to Colorado from Seattle, with most prices found around $164. The month of September is another great option to travel to Colorado, with average flight prices from Seattle averaging around $167.

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

The cheapest day to depart from Seattle to Colorado is on a Saturday when prices can be found for as low as $270. 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 $332.

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

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $215. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $324 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 $207 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 $172 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	$49
Fastest flight time	2h 39m
Direct flights	Every day
Airports in Colorado	2 airports

The best one-way flight to Colorado from Seattle in the past 72 hours is $49. The best round-trip flight deal from Seattle to Colorado found on momondo in the last 72 hours is $71.

The fastest flight from Seattle to Colorado takes 2h 39m

Direct flights go from Seattle to Colorado every day.

There are 2 airports near Colorado: Vail Eagle County (EGE), 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?
There are 7 operators available for flights from Seattle/Tacoma Intl Airport to Colorado as of July 2025.
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?
Based on momondo bookings for flights between Seattle and Colorado, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 17.49% of the total bookings. Other popular models include Boeing 737-900 Passenger/BBJ3 (winglets) with 12.93%, Boeing 737 MAX 9 with 11.03%, and Boeing 737 MAX 8 with 10.78%.

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
Frontier	PriceFrom $61	Free Cancellation	Rating 5.9 3,239 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $98	Free Cancellation	Rating 7.8 2,611 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $108	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Southwest	PriceFrom $126	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $148	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $166	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $169	Free Cancellation	Rating 7.2 10,000 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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Find better results for your trip to Colorado

Popular cities in Colorado

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Cheap flights from Seattle to Colorado from $49

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 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Colorado

Cheap round-trip flights

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Cheap last minute flights

Cheap direct flights

Frontier flights from Seattle to Colorado

Our best Frontier deals on Seattle to Colorado flight tickets

Delta flights from Seattle to Colorado

Our best Delta deals on Seattle to Colorado flight tickets

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Use the filters below to find and compare flights from Seattle to Colorado that are best for you.

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 October is, on average, the cheapest month to fly to Colorado from Seattle, with most prices found around $164. The month of September is another great option to travel to Colorado, with average flight prices from Seattle averaging around $167.

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

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

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $215. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $324 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?

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.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Colorado?

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Colorado

What airlines fly to Colorado?

How many flights depart from Seattle to Colorado on average per day?

40 flights are operational daily from Seattle to Colorado as of July 2025. The most popular departure time for this route is 3:00PM, with 46% of flights per day taking off in the afternoon.

How many flights depart from Seattle to Colorado on average per week?

The number of flights available between Seattle and Colorado is 284 per week as of July 2025. The most frequent departure day is Thu, with 20% of weekly flights leaving on this day.

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

Fastest flight time

Direct flights

Airports in Colorado

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

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?

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

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

Why use momondo?

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

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

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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Colorado

Popular cities in Colorado

Popular flights according to clicks in the last 7 days on momondo