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

38 flights are operational daily from Seattle to Colorado as of July 2026. The most popular departure time for this route is 7:00PM, with 41% of flights per day taking off in the afternoon.

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

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

What airlines fly to Colorado?

Frontier, United Airlines and Alaska Airlines 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 38% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 8 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between Seattle and Colorado is 268 per week as of July 2026. The most frequent departure day is Fri, with 18% of weekly flights leaving on this day.

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 8 operators available for flights from Seattle/Tacoma Intl Airport to Colorado as of July 2026.

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.

$109 Cheap Flights from Seattle to Colorado in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:06 pm - 10:58 pm

SEA

DEN

2h 52mnonstop

7:15 am - 9:19 am

DEN

SEA

3h 04mnonstop

$139Frontier

Fri, Aug 28 - Fri, Sep 4

2:37 pm - 6:33 pm

SEA

DEN

2h 56mnonstop

7:15 am - 9:19 am

DEN

SEA

3h 04mnonstop

$139Frontier

Tue, Aug 25 - Fri, Sep 4

2:37 pm - 6:33 pm

SEA

DEN

2h 56mnonstop

7:30 pm - 9:30 pm

DEN

SEA

3h 00mnonstop

$143Multiple Airlines

Thu, Aug 20 - Mon, Aug 24

8:11 pm - 11:59 pm

SEA

DEN

2h 48mnonstop

7:15 am - 9:19 am

DEN

SEA

3h 04mnonstop

$143Multiple Airlines

Mon, Aug 17 - Tue, Aug 18

5:00 am - 8:45 am

SEA

DEN

2h 45mnonstop

9:03 pm - 11:04 pm

DEN

SEA

3h 01mnonstop

$197United Airlines

Fri, Aug 21 - Sun, Aug 23

6:15 pm - 9:59 pm

SEA

DEN

2h 44mnonstop

1:55 pm - 3:52 pm

DEN

SEA

2h 57mnonstop

$197United Airlines

Thu, Aug 20 - Wed, Aug 26

8:11 pm - 11:59 pm

SEA

DEN

2h 48mnonstop

7:30 pm - 9:30 pm

DEN

SEA

3h 00mnonstop

$197Alaska Airlines

Sun, Aug 16 - Fri, Aug 28

8:07 pm - 11:58 pm

SEA

DEN

2h 51mnonstop

2:20 pm - 4:18 pm

DEN

SEA

2h 58mnonstop

$197Delta

Fri, Aug 14 - Sat, Aug 22

8:07 pm - 11:58 pm

SEA

DEN

2h 51mnonstop

6:20 am - 8:19 am

DEN

SEA

2h 59mnonstop

$197Delta

Thu, Aug 20 - Sun, Aug 23

7:29 pm - 11:16 pm

SEA

DEN

2h 47mnonstop

6:20 am - 8:19 am

DEN

SEA

2h 59mnonstop

$209Alaska Airlines

Fri, Aug 21 - Sun, Aug 23

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Frontier flights from Seattle to Colorado

Our best Frontier deals on Seattle to Colorado flight tickets

Frontier

Aug 25

SEA7:06 pmSeattle/Tacoma Intl

2h 52m

DEN10:58 pmDenver Intl

Aug 31

DEN7:15 amDenver Intl

3h 04m

SEA9:19 amSeattle/Tacoma Intl

$139

Frontier

Aug 15

SEA7:06 pmSeattle/Tacoma Intl

2h 52m

DEN10:58 pmDenver Intl

Aug 22

DEN7:15 amDenver Intl

3h 04m

SEA9:19 amSeattle/Tacoma Intl

$142

Frontier

Aug 14

SEA7:06 pmSeattle/Tacoma Intl

2h 52m

DEN10:58 pmDenver Intl

Aug 16

DEN7:00 amDenver Intl

3h 04m

SEA9:04 amSeattle/Tacoma Intl

$144

United Airlines flights from Seattle to Colorado

Our best United Airlines deals on Seattle to Colorado flight tickets

United Airlines

Sep 30

SEA5:00 amSeattle/Tacoma Intl

6h 41m

1 stop

HDN12:41 pmHayden Yampa Valley

Oct 6

HDN7:05 amHayden Yampa Valley

9h 28m

2 stops

SEA3:33 pmSeattle/Tacoma Intl

$252

United Airlines

Aug 21

SEA6:10 pmSeattle/Tacoma Intl

4h 45m

1 stop

COS11:55 pmColorado Springs

Aug 25

COS5:30 amColorado Springs

5h 31m

1 stop

SEA10:01 amSeattle/Tacoma Intl

$293

United Airlines

Nov 14

SEA5:05 amSeattle/Tacoma Intl

6h 16m

1 stop

COS12:21 pmColorado Springs

Nov 17

COS11:34 amColorado Springs

7h 20m

1 stop

SEA5:54 pmSeattle/Tacoma Intl

$297

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 8/28

7:06 pm-10:58 pm

Nonstop2h 52m

Denver Intl

Fri 9/4

7:15 am-9:19 am

Nonstop3h 04m

$139

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 8/25

2:37 pm-6:33 pm

Nonstop2h 56m

Denver Intl

Fri 9/4

7:15 am-9:19 am

Nonstop3h 04m

$139

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 8/20

2:37 pm-6:33 pm

Nonstop2h 56m

Denver Intl

Mon 8/24

7:30 pm-9:30 pm

Nonstop3h 00m

$143

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 8/17

8:11 pm-11:59 pm

Nonstop2h 48m

Denver Intl

Tue 8/18

7:15 am-9:19 am

Nonstop3h 04m

$143

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 8/21

5:00 am-8:45 am

Nonstop2h 45m

Denver Intl

Sun 8/23

9:03 pm-11:04 pm

Nonstop3h 01m

$197

Quickest round-trip

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 8/20

6:15 pm-9:59 pm

Nonstop2h 44m

Denver Intl

Wed 8/26

1:55 pm-3:52 pm

Nonstop2h 57m

$197

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 8/16

8:11 pm-11:59 pm

Nonstop2h 48m

Denver Intl

Fri 8/28

7:30 pm-9:30 pm

Nonstop3h 00m

$197

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 8/14

8:07 pm-11:58 pm

Nonstop2h 51m

Denver Intl

Sat 8/22

2:20 pm-4:18 pm

Nonstop2h 58m

$197

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 8/20

8:07 pm-11:58 pm

Nonstop2h 51m

Denver Intl

Sun 8/23

6:20 am-8:19 am

Nonstop2h 59m

$197

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 8/21

7:29 pm-11:16 pm

Nonstop2h 47m

Denver Intl

Sun 8/23

6:20 am-8:19 am

Nonstop2h 59m

$209

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 January is, on average, the cheapest month to fly to Colorado from Seattle, with most prices found around $195. The month of October is another great option to travel to Colorado, with average flight prices from Seattle averaging around $205.

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 $303. On the other hand, Sunday 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 $374.

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 $263. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $362 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 from Seattle 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 $236 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 $187 on momondo.

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

There are 4 cabin classes available to choose from on Seattle 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	$169
Fastest flight time	2h 47m
Direct flights	Every day
Airports in Colorado	87 airports

The best one-way flight to Colorado from Seattle in the past 72 hours is $169. The best round-trip flight deal from Seattle to Colorado found on momondo in the last 72 hours is $253.

The fastest flight from Seattle to Colorado takes 2h 47m

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), Denver Intl (DEN).

Search flight deals

Frequently asked questions about flying from Seattle to Colorado

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 8 operators available for flights from Seattle/Tacoma Intl Airport to Colorado as of July 2026.
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 Airbus A321neo, making up 20.41% of the total bookings. Other popular models include Boeing 737 MAX 8 with 13.88%, Boeing 737-800 Passenger/BBJ2 (winglets) with 12.41%, and Airbus A321-100/200 with 10.28%.

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 $55	Free Cancellation	Rating 5.6 2,753 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $69	Free Cancellation	Rating 7.8 2,821 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $90	Free Cancellation	Rating 7.8 8,480 reviews	Search Delta flights
Southwest	PriceFrom $117	Free Cancellation	Rating 8.0 4,229 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $117	Free Cancellation	Rating 7.9 12,721 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $132	Free Cancellation	Rating 7.4 10,046 reviews	Search United Airlines flights
JetBlue	PriceFrom $200	Free Cancellation	Rating 7.1 3,026 reviews	Search JetBlue flights
American Airlines	PriceFrom $274	Free Cancellation	Rating 7.1 11,841 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

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Flights to Las Vegasfrom $40

Flights to Washington, D.C.from $59

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Flights to Fort Lauderdalefrom $60

Flights to Dallasfrom $58

Cheap flights from Seattle to Colorado from $99

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 8/17. 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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Frontier flights from Seattle to Colorado

Our best Frontier deals on Seattle to Colorado flight tickets

United Airlines flights from Seattle to Colorado

Our best United Airlines deals on Seattle to Colorado flight tickets

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See travel insights to Colorado from

How to get the cheapest flight ticket from Seattle to Colorado

What is the cheapest month to fly to Colorado?

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?

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

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

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

Can stopping save me money on Seattle to Colorado flights?

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

What airlines fly to Colorado?

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

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

Cheap Seattle to Colorado flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Colorado

Frequently asked questions about flying 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?

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

Seattle flight routes

According to popular flight searches on momondo this year

Colorado flight routes

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