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

441 flights are operational weekly from Colorado to State of Washington as of August 2025. The most popular departure day for this route is Fri, with 20% of flights per week taking off on this day.

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

As of August 2025, 63 flights take off from Colorado and land in State of Washington each day. The most common flight departure time for this route is 6:00AM, with 46% of daily flights taking off at noon.

What airlines fly to State of Washington?

Frontier, United Airlines and Alaska Airlines are the top three most popular airlines that fly to State of Washington from Colorado according to our data. Frontier is the first choice among our users, with 34% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 7 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

If you’re flying from a popular airport in Colorado, such as Denver or Grand Junction, and flying into State of Washington, then you can expect flight times to average 2h 55m and 4h 31m, respectively.

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

Frontier, Alaska Airlines, and Southwest are the most popular carriers operating from Colorado to Washington

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

Prices for flights from Colorado to Washington are updated daily.

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

The number of operators available for flights from Colorado to Washington is 7 as of August 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Washington.

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

The required travel and health documents for your Washington 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 Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$47 Cheap Flights from Colorado to Washington in 2025

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Find the cheapest flights from Colorado to Washington

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:55 pm - 10:59 pmDEN-SEA

3h 04mnonstop

7:00 am - 10:53 amSEA-DEN

2h 53mnonstop

$79Frontier

Find Deal

Wed, Sep 17 - Tue, Sep 30

10:29 pm - 12:30 amDEN-SEA

3h 01mnonstop

6:12 am - 10:08 amSEA-DEN

2h 56mnonstop

$87Frontier

Find Deal

Thu, Sep 25 - Mon, Sep 29

11:40 am - 1:23 pmDEN-PDX

2h 43mnonstop

7:00 am - 10:44 amPDX-DEN

2h 44mnonstop

$157Alaska Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 30

7:59 pm - 10:05 pmDEN-SEA

3h 06mnonstop

6:00 pm - 9:42 pmSEA-DEN

2h 42mnonstop

$157Delta

Find Deal

Wed, Sep 10 - Wed, Sep 17

11:40 am - 1:23 pmDEN-PDX

2h 43mnonstop

1:24 pm - 10:02 pmPDX-DEN

7h 38m1 stop

$167Alaska Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 30

6:50 am - 11:04 amDEN-PSC

5h 14m1 stop

9:23 am - 2:50 pmPSC-DEN

4h 27m1 stop

$189Delta

Find Deal

Thu, Sep 4 - Mon, Sep 8

5:00 pm - 10:30 pmCOS-SEA

6h 30m1 stop

11:10 pm - 9:50 amSEA-COS

9h 40m1 stop

$197Southwest

Find Deal

Sat, Sep 6 - Sat, Sep 13

1:10 pm - 7:35 pmCOS-PDX

7h 25m1 stop

5:25 am - 6:05 pmPDX-COS

11h 40m1 stop

$222Southwest

Find Deal

Thu, Sep 11 - Sun, Sep 14

7:07 pm - 8:35 pmDEN-PSC

2h 28mnonstop

5:30 am - 8:53 amPSC-DEN

2h 23mnonstop

$244United Airlines

Find Deal

Fri, Aug 22 - Mon, Aug 25

5:30 am - 3:14 pmDRO-SEA

10h 44m2 stops

5:02 am - 12:32 pmSEA-DRO

6h 30m1 stop

$244United Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 16

Frontier flights from Colorado to State of Washington

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

Frontier

Sep 17

DEN8:55 pmDenver Intl

3h 04m

SEA10:59 pmSeattle/Tacoma Intl

Sep 30

SEA7:00 amSeattle/Tacoma Intl

2h 53m

DEN10:53 amDenver Intl

$79

Find similar

Frontier

Sep 25

DEN10:29 pmDenver Intl

3h 01m

SEA12:30 amSeattle/Tacoma Intl

Sep 29

SEA6:12 amSeattle/Tacoma Intl

2h 56m

DEN10:08 amDenver Intl

$87

Find similar

Frontier

Oct 11

DEN8:50 pmDenver Intl

2h 49m

PDX10:39 pmPortland

Oct 18

PDX6:05 amPortland

2h 41m

DEN9:46 amDenver Intl

$88

Find similar

Delta flights from Colorado to State of Washington

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

Delta

Sep 10

DEN7:59 pmDenver Intl

3h 06m

SEA10:05 pmSeattle/Tacoma Intl

Sep 17

SEA6:00 pmSeattle/Tacoma Intl

2h 42m

DEN9:42 pmDenver Intl

$157

Find similar

Delta

Sep 4

DEN6:50 amDenver Intl

5h 14m

1 stop

PSC11:04 amPasco Tri Cities

Sep 8

PSC9:23 amPasco Tri Cities

4h 27m

1 stop

DEN2:50 pmDenver Intl

$189

Find similar

Delta

Aug 16

DEN5:45 amDenver Intl

3h 58m

1 stop

PSC8:43 amPasco Tri Cities

Aug 20

PSC5:18 pmPasco Tri Cities

4h 30m

1 stop

DEN10:48 pmDenver Intl

$209

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 9/17

8:55 pm-10:59 pm

Nonstop3h 04m

Seattle/Tacoma Intl

Tue 9/30

7:00 am-10:53 am

Nonstop2h 53m

$79

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Thu 9/25

10:29 pm-12:30 am

Nonstop3h 01m

Seattle/Tacoma Intl

Mon 9/29

6:12 am-10:08 am

Nonstop2h 56m

$87

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Tue 9/16

11:40 am-1:23 pm

Nonstop2h 43m

Portland

Tue 9/30

7:00 am-10:44 am

Nonstop2h 44m

$157

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 9/10

7:59 pm-10:05 pm

Nonstop3h 06m

Seattle/Tacoma Intl

Wed 9/17

6:00 pm-9:42 pm

Nonstop2h 42m

$157

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Tue 9/16

11:40 am-1:23 pm

Nonstop2h 43m

Portland

Tue 9/30

1:24 pm-10:02 pm

1 stop7h 38m

$167

DenverPasco

DEN - PSC

DENPSC

Denver Intl

Thu 9/4

6:50 am-11:04 am

1 stop5h 14m

Pasco Tri Cities

Mon 9/8

9:23 am-2:50 pm

1 stop4h 27m

$189

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sat 9/6

5:00 pm-10:30 pm

1 stop6h 30m

Seattle/Tacoma Intl

Sat 9/13

11:10 pm-9:50 am

1 stop9h 40m

$197

Colorado SpringsPortland

COS - PDX

COSPDX

Colorado Springs

Thu 9/11

1:10 pm-7:35 pm

1 stop7h 25m

Portland

Sun 9/14

5:25 am-6:05 pm

1 stop11h 40m

$222

DenverPasco

DEN - PSC

DENPSC

Denver Intl

Fri 8/22

7:07 pm-8:35 pm

Nonstop2h 28m

Pasco Tri Cities

Mon 8/25

5:30 am-8:53 am

Nonstop2h 23m

$244

DurangoSeattle

DRO - SEA

DROSEA

Durango La Plata County

Tue 9/9

5:30 am-3:14 pm

2 stops10h 44m

Seattle/Tacoma Intl

Tue 9/16

5:02 am-12:32 pm

1 stop6h 30m

$244

Flights are sorted by cheapest round-trip flights first.

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

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 State of Washington?

The month of October is, on average, the cheapest month to fly to State of Washington from Colorado, with most prices found around $166. If you aren’t able to travel to State of Washington during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $173.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Colorado to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $286. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to State of Washington for around $440.

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

The cheapest time of day to fly to State of Washington is in the afternoon when flights can be purchased for as low as $257. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $382 on average. Flights to State of Washington from Colorado in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Colorado to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $207 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Colorado for as low as $178 on momondo.

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

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

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

Cheap Colorado to State of Washington flight deals and tips

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

Best Price Found	$47
Fastest flight time	2h 15m
Direct flights	Every day
Airports in State of Washington	4 airports

The best one-way flight to State of Washington from Colorado in the past 72 hours is $47. The best round-trip flight deal from Colorado to State of Washington found on momondo in the last 72 hours is $79.

The fastest flight from Colorado to State of Washington takes 2h 15m

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

There are 4 airports near State of Washington: Pasco Tri Cities (PSC), Portland (PDX), Spokane (GEG), Seattle/Tacoma Intl (SEA)

Search flight deals

When did momondo last update prices for flights from Colorado to Washington?
Prices for flights from Colorado to Washington are updated daily.
How many operators does momondo search for flights from Colorado to Washington?
The number of operators available for flights from Colorado to Washington is 7 as of August 2025.
How old do you have to be to fly from Colorado to Washington?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington 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 Washington. 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 Colorado to State of Washington?
momondo data reveals that the most frequently booked plane model on the route from Colorado to State of Washington is Boeing 737-900 Passenger/BBJ3 (winglets), representing 13.38% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 12.10%, Boeing 737 MAX 9 at 11.53%, and Boeing 737 MAX 8 at 10.19%.

Best airlines flying from Colorado to State of Washington

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $60	Free Cancellation	Rating 5.8 3,241 reviews	Search Frontier flights
Delta	PriceFrom $104	Free Cancellation	Rating 8.0 7,983 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $111	Free Cancellation	Rating 7.8 2,613 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom $137	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $147	Free Cancellation	Rating 7.4 8,904 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $157	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $199	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 Colorado to Washington?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington from Colorado.

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

All flight searches from Colorado to Washington on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Colorado to Washington 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 Colorado to Washington right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Colorado to Washington flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your State of Washington trip

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Cheap flights from Colorado to Washington from $47

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Washington departing on 10/8. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Colorado to Washington

Cheap round-trip flights

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Frontier flights from Colorado to State of Washington

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

Delta flights from Colorado to State of Washington

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

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

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 State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

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

What is the cheapest Colorado to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

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

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

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

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

Frontier, Alaska Airlines, and Southwest are the most popular carriers operating from Colorado to Washington

What airlines fly to State of Washington?

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

As of August 2025, 63 flights take off from Colorado and land in State of Washington each day. The most common flight departure time for this route is 6:00AM, with 46% of daily flights taking off at noon.

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

441 flights are operational weekly from Colorado to State of Washington as of August 2025. The most popular departure day for this route is Fri, with 20% of flights per week taking off on this day.

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

If you’re flying from a popular airport in Colorado, such as Denver or Grand Junction, and flying into State of Washington, then you can expect flight times to average 2h 55m and 4h 31m, respectively.

Cheap Colorado to State of Washington flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

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

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

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

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

What is the most popular plane model from Colorado to State of Washington?

Best airlines flying from Colorado to State of Washington

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

Why use momondo?

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

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

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

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

An easier way to manage your State of Washington 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 Washington

Popular cities in Washington

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