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

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

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 36% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 6 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 56m and 4h 40m, respectively.

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

258 flights are operational weekly from Colorado to State of Washington as of September 2026. The most popular departure day for this route is Sun, with 22% 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 September 2026, 36 flights take off from Colorado and land in State of Washington each day. The most common flight departure time for this route is 1:00PM, with 41% of daily flights taking off in the afternoon.

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 6 as of September 2026.

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.

$93 Cheap Flights from Colorado to Washington in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Washington

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:08 pm - 5:18 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

23h 10m1 stop Las Vegas Harry Reid Intl

4:29 pm - 8:19 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 50mnonstop

$163Frontier

Wed, Feb 3 - Wed, Feb 10

10:55 pm - 6:54 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

20h 59m1 stop Los Angeles

8:09 pm - 5:35 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

20h 26m1 stop Los Angeles

$163Frontier

Tue, Oct 27 - Tue, Nov 3

7:47 am - 3:39 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

8h 52m2 stops Portland Boise Air Term. Gowen Fld

7:37 pm - 11:17 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 40mnonstop

$191Alaska Airlines

Sat, Feb 6 - Sat, Feb 6

9:16 am - 3:43 pmDEN Denver Intl-PSC Pasco Tri Cities

7h 27m1 stop Santa Ana J. Wayne/Orange Cnty

4:33 pm - 3:12 pmPSC Pasco Tri Cities-DEN Denver Intl

21h 39m1 stop Santa Ana J. Wayne/Orange Cnty

$194Multiple Airlines

Thu, Jan 21 - Sun, Jan 24

1:03 pm - 3:14 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 11mnonstop

3:45 pm - 7:31 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 46mnonstop

$198Multiple Airlines

Wed, Feb 17 - Tue, Feb 23

3:22 pm - 5:31 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 09mnonstop

7:36 pm - 12:56 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

16h 20m2 stops San Francisco San Diego

$217Alaska Airlines

Wed, Dec 2 - Wed, Dec 2

11:15 am - 12:47 pmDEN Denver Intl-GEG Spokane

2h 32mnonstop

5:00 am - 8:19 amGEG Spokane-DEN Denver Intl

2h 19mnonstop

$245United Airlines

Tue, Oct 27 - Tue, Nov 3

8:45 am - 10:15 amDEN Denver Intl-GEG Spokane

2h 30mnonstop

1:35 pm - 4:40 pmGEG Spokane-DEN Denver Intl

2h 05mnonstop

$245Southwest

Wed, Nov 4 - Wed, Nov 11

7:40 pm - 9:15 pmDEN Denver Intl-GEG Spokane

2h 35mnonstop

1:30 pm - 4:35 pmGEG Spokane-DEN Denver Intl

2h 05mnonstop

$245Southwest

Sat, Nov 7 - Sat, Nov 14

11:15 am - 12:36 pmDEN Denver Intl-GEG Spokane

2h 21mnonstop

5:00 am - 8:19 amGEG Spokane-DEN Denver Intl

2h 19mnonstop

$251United Airlines

Thu, Oct 22 - Tue, Oct 27

Cheap last minute flights

Enter your travel dates to find the best prices.

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

4:27 pm - 8:21 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

$225Frontier

Thu, Oct 1 - Mon, Oct 5

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

4:27 pm - 8:21 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

$261Frontier

Tue, Sep 29 - Tue, Oct 6

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

7:08 am - 11:02 amSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

$349Multiple Airlines

Sat, Oct 3 - Sun, Oct 11

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

7:08 am - 11:02 amSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

$349Multiple Airlines

Sat, Oct 3 - Sun, Oct 11

7:30 pm - 11:49 pmDEN Denver Intl-PSC Pasco Tri Cities

5h 19m1 stop Seattle/Tacoma Intl

6:00 pm - 11:02 amPSC Pasco Tri Cities-DEN Denver Intl

16h 02m1 stop Seattle/Tacoma Intl

$409Alaska Airlines

Fri, Oct 2 - Mon, Oct 5

3:04 pm - 5:00 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

2h 56mnonstop

6:54 pm - 10:37 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 43mnonstop

$423Alaska Airlines

Fri, Oct 2 - Sun, Oct 11

6:06 pm - 10:59 pmGJT Grand Junction Regnl-SEA Seattle/Tacoma Intl

5h 53m1 stop Denver Intl

2:27 pm - 10:06 pmSEA Seattle/Tacoma Intl-GJT Grand Junction Regnl

6h 39m1 stop Denver Intl

$429United Airlines

Fri, Oct 2 - Mon, Oct 5

1:45 pm - 8:00 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

7h 15m1 stop Phoenix Sky Harbor Intl

5:15 am - 1:20 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

7h 05m2 stops Phoenix Sky Harbor Intl Colorado Springs

$448Southwest

Sat, Oct 3 - Sun, Oct 11

1:45 pm - 8:00 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

7h 15m1 stop Phoenix Sky Harbor Intl

5:15 am - 1:20 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

7h 05m2 stops Phoenix Sky Harbor Intl Colorado Springs

$448Southwest

Sat, Oct 3 - Sun, Oct 11

7:13 pm - 8:40 pmDEN Denver Intl-PSC Pasco Tri Cities

2h 27mnonstop

12:59 pm - 4:34 pmPSC Pasco Tri Cities-DEN Denver Intl

2h 35mnonstop

$489United Airlines

Thu, Oct 1 - Mon, Oct 5

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Frontier flights from Colorado to State of Washington

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

Frontier

Oct 27

DEN10:55 pmDenver Intl

20h 59m

1 stop

SEA6:54 pmSeattle/Tacoma Intl

Nov 3

SEA8:09 pmSeattle/Tacoma Intl

12h 36m

1 stop

DEN9:45 amDenver Intl

$163

Frontier

Oct 27

DEN10:55 pmDenver Intl

20h 59m

1 stop

SEA6:54 pmSeattle/Tacoma Intl

Nov 4

SEA8:09 pmSeattle/Tacoma Intl

20h 54m

1 stop

DEN6:03 pmDenver Intl

$164

Frontier

Oct 28

DEN1:10 pmDenver Intl

6h 44m

1 stop

SEA6:54 pmSeattle/Tacoma Intl

Nov 4

SEA8:09 pmSeattle/Tacoma Intl

20h 54m

1 stop

DEN6:03 pmDenver Intl

$172

Delta flights from Colorado to State of Washington

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

Delta

Oct 10

DEN6:00 amDenver Intl

7h 18m

1 stop

GEG12:18 pmSpokane

Oct 13

GEG3:30 pmSpokane

7h 25m

1 stop

DEN11:55 pmDenver Intl

$265

Delta

Nov 2

DEN1:55 pmDenver Intl

5h 50m

1 stop

GEG6:45 pmSpokane

Nov 10

GEG11:00 amSpokane

5h 37m

1 stop

DEN5:37 pmDenver Intl

$277

Delta

Nov 3

COS8:17 amColorado Springs

9h 28m

2 stops

SEA4:45 pmSeattle/Tacoma Intl

Nov 7

SEA7:45 amSeattle/Tacoma Intl

8h 42m

2 stops

COS5:27 pmColorado Springs

$317

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Wed 2/3

7:08 pm-5:18 pm

1 stop23h 10m

Seattle/Tacoma Intl

Wed 2/10

4:29 pm-8:19 pm

Nonstop2h 50m

$163

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Tue 10/27

10:55 pm-6:54 pm

1 stop20h 59m

Seattle/Tacoma Intl

Tue 11/3

8:09 pm-5:35 pm

1 stop20h 26m

$163

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Sat 2/6

7:47 am-3:39 pm

2 stops8h 52m

Seattle/Tacoma Intl

Sat 2/6

7:37 pm-11:17 pm

Nonstop2h 40m

$191

DenverPasco

DEN Denver Intl - PSC Pasco Tri Cities

DENPSC

Denver Intl

Thu 1/21

9:16 am-3:43 pm

1 stop7h 27m

Pasco Tri Cities

Sun 1/24

4:33 pm-3:12 pm

1 stop21h 39m

$194

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Wed 2/17

1:03 pm-3:14 pm

Nonstop3h 11m

Seattle/Tacoma Intl

Tue 2/23

3:45 pm-7:31 pm

Nonstop2h 46m

$198

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Wed 12/2

3:22 pm-5:31 pm

Nonstop3h 09m

Seattle/Tacoma Intl

Wed 12/2

7:36 pm-12:56 pm

2 stops16h 20m

$217

DenverSpokane

DEN Denver Intl - GEG Spokane

DENGEG

Denver Intl

Tue 10/27

11:15 am-12:47 pm

Nonstop2h 32m

Spokane

Tue 11/3

5:00 am-8:19 am

Nonstop2h 19m

$245

Quickest round-trip

DenverSpokane

DEN Denver Intl - GEG Spokane

DENGEG

Denver Intl

Wed 11/4

8:45 am-10:15 am

Nonstop2h 30m

Spokane

Wed 11/11

1:35 pm-4:40 pm

Nonstop2h 05m

$245

DenverSpokane

DEN Denver Intl - GEG Spokane

DENGEG

Denver Intl

Sat 11/7

7:40 pm-9:15 pm

Nonstop2h 35m

Spokane

Sat 11/14

1:30 pm-4:35 pm

Nonstop2h 05m

$245

DenverSpokane

DEN Denver Intl - GEG Spokane

DENGEG

Denver Intl

Thu 10/22

11:15 am-12:36 pm

Nonstop2h 21m

Spokane

Tue 10/27

5:00 am-8:19 am

Nonstop2h 19m

$251

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 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 January is, on average, the cheapest month to fly to State of Washington from Colorado, with most prices found around $174. If you aren’t able to travel to State of Washington during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $204.

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 Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $297. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to State of Washington for around $390.

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 morning when flights can be purchased for as low as $316. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $398 on average. Flights to State of Washington from Colorado in the afternoon 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 Everett Paine Field for the best Colorado - Washington flight prices

How far in advance should I book a flight from Colorado to 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 $239 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 $207 on momondo.

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

There are 4 cabin classes available to choose from on Colorado to State of 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	$93
Fastest flight time	2h 19m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from Colorado in the past 72 hours is $93. The best round-trip flight deal from Colorado to State of Washington found on momondo in the last 72 hours is $163.

The fastest flight from Colorado to State of Washington takes 2h 19m

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

There are 96 airports in State of Washington. From Colorado there are direct flights to Pasco Tri Cities (PSC), Spokane (GEG).

Search flight deals

Frequently asked questions about flying 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 6 as of September 2026.
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 MAX 8, representing 16.28% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 15.26%, Airbus A321neo at 14.51%, and Airbus A321-100/200 at 8.39%.

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 $54	Free Cancellation	Rating 5.6 2,573 reviews	Search Frontier flights
Delta	PriceFrom $80	Free Cancellation	Rating 7.8 8,606 reviews	Search Delta flights
Southwest	PriceFrom $117	Free Cancellation	Rating 8.0 4,201 reviews	Search Southwest flights
United Airlines	PriceFrom $117	Free Cancellation	Rating 7.4 10,246 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $131	Free Cancellation	Rating 7.9 12,980 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $244	Free Cancellation	Rating 7.0 12,098 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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Popular cities in Washington

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Cheap flights from Colorado to Washington from $93

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 10/6. 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 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

momondo Fare Finder

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

See travel insights to Washington from

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

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?

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

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

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

What is the cheapest airline that flies 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?

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

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

Cheap Colorado to State of Washington flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

Frequently asked questions about flying from Colorado to 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?

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

Colorado flight routes

According to popular flight searches on momondo this year

State of Washington flight routes

According to popular flight searches on momondo this year

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