What is the cheapest airline that flies from Washington to Colorado?

Delta, United Airlines, and Southwest are the most popular carriers operating from Washington to Colorado

What airlines fly to Colorado?

Frontier, United Airlines and Delta are the top three most popular airlines that fly to Colorado from State of Washington according to our data. Frontier is the first choice among our users, with 37% 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.

How many flights depart from State of Washington to Colorado on average per week?

As of March 2026, 313 flights take off from State of Washington and land in Colorado each week. The most common flight departure day for this route is Fri, with 19% of weekly flights taking off on this day.

How long is the flight from State of Washington to Colorado?

Flight times from State of Washington to Colorado vary, but if you’re flying out of Spokane and flying into Denver (one of the most popular routes), then the duration is 2h 10m on average. Another popular route from State of Washington to Colorado is flying from Pasco to Denver, which will take roughly 2h 22m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from State of Washington to Colorado on average per day?

44 flights are operational daily from State of Washington to Colorado as of March 2026. The most popular departure time for this route is 1:00PM, with 49% of flights per day taking off in the afternoon.

When did momondo last update prices for flights from Washington to Colorado?

Prices for flights from Washington to Colorado refresh daily.

How many operators does momondo search for flights from Washington to Colorado?

The number of operators available for flights from Washington to Colorado is 7 as of March 2026.

How old do you have to be to fly from Washington to Colorado?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Colorado.

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

The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$53 Cheap Flights from Washington to Colorado in 2026

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Find the cheapest flights from Washington to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:20 pm - 8:11 pm

SEA

DEN

2h 51mnonstop

7:15 am - 9:27 am

DEN

SEA

3h 12mnonstop

$82Frontier

Thu, Apr 16 - Tue, Apr 21

7:12 pm - 10:59 pm

SEA

DEN

2h 47mnonstop

7:15 am - 9:27 am

DEN

SEA

3h 12mnonstop

$88Frontier

Wed, Apr 29 - Sun, May 3

3:25 pm - 12:30 am

SEA

COS

8h 05m

1 stop

7:20 pm - 12:55 am

COS

SEA

6h 35m

1 stop

$157Southwest

Sun, Apr 19 - Thu, Apr 23

1:25 pm - 9:20 pm

SEA

COS

6h 55m

1 stop

6:00 am - 10:55 am

COS

SEA

5h 55m

1 stop

$158Southwest

Wed, Apr 15 - Wed, Apr 22

5:30 am - 11:24 am

SEA

COS

4h 54m

1 stop

7:59 am - 2:46 pm

COS

SEA

7h 47m

1 stop

$177Delta

Tue, Apr 7 - Wed, Apr 22

5:49 pm - 11:50 pm

PSC

DEN

5h 01m

1 stop

6:55 am - 11:48 am

DEN

PSC

5h 53m

1 stop

$245Delta

Fri, May 1 - Tue, May 5

5:00 am - 8:29 am

PSC

DEN

2h 29mnonstop

7:28 pm - 9:01 pm

DEN

PSC

2h 33mnonstop

$269United Airlines

Wed, Apr 15 - Sun, Apr 19

5:00 am - 12:41 pm

SEA

MTJ

6h 41m

1 stop

1:40 pm - 11:27 pm

MTJ

SEA

10h 47m

2 stops

$276United Airlines

Mon, Apr 13 - Tue, Apr 21

10:45 am - 12:06 pm

PAE

DEN

24h 21m

2 stops

1:02 pm - 11:59 pm

DEN

PAE

11h 57m

2 stops

$284Alaska Airlines

Mon, Apr 27 - Thu, Apr 30

6:28 pm - 12:20 pm

PAE

DEN

16h 52m

2 stops

6:20 pm - 9:50 am

DEN

PAE

16h 30m

2 stops

$294Alaska Airlines

Mon, Apr 13 - Mon, Apr 20

Frontier flights from State of Washington to Colorado

Our best Frontier deals on State of Washington to Colorado flight tickets

Frontier

Apr 16

SEA4:20 pmSeattle/Tacoma Intl

2h 51m

DEN8:11 pmDenver Intl

Apr 21

DEN7:15 amDenver Intl

3h 12m

SEA9:27 amSeattle/Tacoma Intl

$82

Frontier

Apr 29

SEA7:12 pmSeattle/Tacoma Intl

2h 47m

DEN10:59 pmDenver Intl

May 3

DEN7:15 amDenver Intl

3h 12m

SEA9:27 amSeattle/Tacoma Intl

$88

Frontier

Apr 17

SEA7:12 pmSeattle/Tacoma Intl

2h 47m

DEN10:59 pmDenver Intl

Apr 24

DEN7:40 amDenver Intl

3h 12m

SEA9:52 amSeattle/Tacoma Intl

$91

Delta flights from State of Washington to Colorado

Our best Delta deals on State of Washington to Colorado flight tickets

Delta

Apr 24

SEA8:00 pmSeattle/Tacoma Intl

2h 50m

DEN11:50 pmDenver Intl

May 3

DEN6:55 amDenver Intl

3h 06m

SEA9:01 amSeattle/Tacoma Intl

$137

Delta

Apr 1

SEA7:46 pmSeattle/Tacoma Intl

2h 46m

DEN11:32 pmDenver Intl

Apr 8

DEN6:30 amDenver Intl

3h 08m

SEA8:38 amSeattle/Tacoma Intl

$177

Delta

Apr 1

SEA7:46 pmSeattle/Tacoma Intl

2h 46m

DEN11:32 pmDenver Intl

Apr 5

DEN6:30 amDenver Intl

3h 08m

SEA8:38 amSeattle/Tacoma Intl

$197

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 4/16

4:20 pm-8:11 pm

Nonstop2h 51m

Denver Intl

Tue 4/21

7:15 am-9:27 am

Nonstop3h 12m

$82

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 4/29

7:12 pm-10:59 pm

Nonstop2h 47m

Denver Intl

Sun 5/3

7:15 am-9:27 am

Nonstop3h 12m

$88

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Sun 4/19

3:25 pm-12:30 am

1 stop8h 05m

Colorado Springs

Thu 4/23

7:20 pm-12:55 am

1 stop6h 35m

$157

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Wed 4/15

1:25 pm-9:20 pm

1 stop6h 55m

Colorado Springs

Wed 4/22

6:00 am-10:55 am

1 stop5h 55m

$158

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Tue 4/7

5:30 am-11:24 am

1 stop4h 54m

Colorado Springs

Wed 4/22

7:59 am-2:46 pm

1 stop7h 47m

$177

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Fri 5/1

5:49 pm-11:50 pm

1 stop5h 01m

Denver Intl

Tue 5/5

6:55 am-11:48 am

1 stop5h 53m

$245

Quickest round-trip

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Wed 4/15

5:00 am-8:29 am

Nonstop2h 29m

Denver Intl

Sun 4/19

7:28 pm-9:01 pm

Nonstop2h 33m

$269

SeattleMontrose

SEA - MTJ

SEAMTJ

Seattle/Tacoma Intl

Mon 4/13

5:00 am-12:41 pm

1 stop6h 41m

Montrose County

Tue 4/21

1:40 pm-11:27 pm

2 stops10h 47m

$276

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Mon 4/27

10:45 am-12:06 pm

2 stops24h 21m

Denver Intl

Thu 4/30

1:02 pm-11:59 pm

2 stops11h 57m

$284

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Mon 4/13

6:28 pm-12:20 pm

2 stops16h 52m

Denver Intl

Mon 4/20

6:20 pm-9:50 am

2 stops16h 30m

$294

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 State of Washington 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 State of Washington, with most prices found around $159. The month of October is another great option to travel to Colorado, with average flight prices from State of Washington averaging around $195.

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

The cheapest day to depart from State of Washington to Colorado is on a Friday when prices can be found for as low as $271. On the other hand, Sunday is the most expensive day to depart from State of Washington because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $331.

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 $242. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $312 per ticket.

What is the cheapest Washington to Colorado flight route?

Fly from Seattle/Tacoma Intl to Denver Intl for the best Washington - 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 State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $211 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from State of Washington for as low as $173 on momondo.

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

There are 4 cabin classes available to choose from on Washington 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 State of Washington to Colorado flights?

No. A direct flight is the cheapest option for a flight between State of Washington to Colorado.

Cheap State of Washington to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Colorado

Best Price Found	$150
Fastest flight time	2h 10m
Direct flights	Every day
Airports in Colorado	87 airports

The best one-way flight to Colorado from State of Washington in the past 72 hours is $150. The best round-trip flight deal from State of Washington to Colorado found on momondo in the last 72 hours is $192.

The fastest flight from State of Washington to Colorado takes 2h 10m

Direct flights go from State of Washington to Colorado every day.

There are 87 airports in Colorado. From State of Washington there are direct flights to Denver Intl (DEN).

Search flight deals

When did momondo last update prices for flights from Washington to Colorado?
Prices for flights from Washington to Colorado refresh daily.
How many operators does momondo search for flights from Washington to Colorado?
The number of operators available for flights from Washington to Colorado is 7 as of March 2026.
How old do you have to be to fly from Washington to Colorado?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Colorado.
What documentation or ID do you need to fly to Colorado?
The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from State of Washington to Colorado?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from State of Washington to Colorado is Boeing 737 MAX 8 (18.40% of total bookings). The next most popular plane models are Boeing 737 MAX 9 (13.78%), Boeing 737-800 (11.32%), and Boeing 737-800 Passenger/BBJ2 (winglets) (9.01%).

Best airlines flying from State of Washington to Colorado

Compare and see reviews for airlines that fly from State of Washington to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $57	Free Cancellation	Rating 5.7 3,020 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $78	Free Cancellation	Rating 7.8 2,841 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $97	Free Cancellation	Rating 7.9 8,315 reviews	Search Delta flights
Alaska Airlines	PriceFrom $110	Free Cancellation	Rating 7.9 12,094 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $117	Free Cancellation	Rating 8.0 4,325 reviews	Search Southwest flights
United Airlines	PriceFrom $129	Free Cancellation	Rating 7.4 9,459 reviews	Search United Airlines flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.1 11,485 reviews	Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Colorado. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Washington to Colorado flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Colorado.

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

Yes momondo offers price alerts on flights to Colorado from Washington. 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.

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Flights to Seattlefrom $71

Cheap flights from Washington to Colorado from $53

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Colorado departing on 4/14. 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 State of Washington to Colorado

Our best Frontier deals on State of Washington to Colorado flight tickets

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How to get the cheapest flight ticket from State of Washington 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 Washington to Colorado flight route?

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

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

Can stopping save me money on State of Washington to Colorado flights?

What is the cheapest airline that flies from Washington to Colorado?

What airlines fly to Colorado?

How many flights depart from State of Washington to Colorado on average per day?

How many flights depart from State of Washington to Colorado on average per week?

How long is the flight from State of Washington to Colorado?

Cheap State of Washington to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Colorado

Best Price Found

Fastest flight time

Direct flights

Airports in Colorado

Best airlines flying from State of Washington to Colorado

Compare and see reviews for airlines that fly from State of Washington 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

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