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Cheap flights from Colorado to Washington from $94

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 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:15 am - 9:19 amDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 04mnonstop
Frontier Logo
7:06 pm - 10:58 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 52mnonstop
$138Frontier
Tue, Aug 25 - Wed, Aug 26
Frontier Logo
11:05 am - 1:22 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 17mnonstop
Frontier Logo
7:06 pm - 10:58 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 52mnonstop
$138Frontier
Wed, Aug 26 - Thu, Aug 27
Multiple Airlines Logo
7:15 am - 9:19 amDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 04mnonstop
Multiple Airlines Logo
7:14 am - 11:04 amSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 50mnonstop
$138Multiple Airlines
Thu, Aug 27 - Sun, Aug 30
Multiple Airlines Logo
7:15 am - 9:19 amDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 04mnonstop
Multiple Airlines Logo
7:14 am - 11:04 amSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 50mnonstop
$143Multiple Airlines
Fri, Aug 28 - Sun, Aug 30
Southwest Logo
7:35 pm - 9:30 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
2h 55mnonstop
Southwest Logo
6:15 pm - 10:05 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 50mnonstop
$173Southwest
Sat, Sep 26 - Wed, Sep 30
Southwest Logo
5:05 pm - 7:05 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 00mnonstop
Southwest Logo
6:30 am - 2:45 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
7h 15m1 stop Las Vegas Harry Reid Intl
$183Southwest
Tue, Oct 6 - Sat, Oct 10
United Airlines Logo
9:03 pm - 11:04 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 01mnonstop
United Airlines Logo
5:00 am - 8:45 amSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 45mnonstop
$197United Airlines
Fri, Aug 28 - Sun, Aug 30
Delta Logo
1:21 pm - 3:23 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 02mnonstop
Delta Logo
8:07 pm - 11:58 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 51mnonstop
$197Delta
Thu, Aug 27 - Sun, Aug 30
Delta Logo
6:43 pm - 8:45 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 02mnonstop
Delta Logo
8:40 am - 12:26 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 46mnonstop
$197Delta
Fri, Aug 28 - Sun, Aug 30
United Airlines Logo
5:49 pm - 11:26 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
6h 37m1 stop San Francisco
United Airlines Logo
5:00 am - 8:45 amSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 45mnonstop
$203United Airlines
Fri, Aug 28 - Sun, Aug 30

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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
Aug 25
DEN7:15 amDenver Intl
3h 04m
SEA9:19 amSeattle/Tacoma Intl
Aug 26
SEA7:06 pmSeattle/Tacoma Intl
2h 52m
DEN10:58 pmDenver Intl
$138
Frontier
Aug 29
DEN7:15 amDenver Intl
3h 04m
SEA9:19 amSeattle/Tacoma Intl
Sep 12
SEA4:27 pmSeattle/Tacoma Intl
2h 54m
DEN8:21 pmDenver Intl
$139
Frontier
Nov 3
DEN7:45 amDenver Intl
3h 06m
SEA9:51 amSeattle/Tacoma Intl
Nov 10
SEA7:41 pmSeattle/Tacoma Intl
2h 53m
DEN11:34 pmDenver Intl
$140

Delta flights from Colorado to State of Washington

Our best Delta deals on Colorado to State of Washington flight tickets
Delta
Sep 1
COS8:10 amColorado Springs
7h 40m
1 stop
SEA2:50 pmSeattle/Tacoma Intl
Sep 5
SEA7:16 amSeattle/Tacoma Intl
9h 20m
2 stops
COS5:36 pmColorado Springs
$272
Delta
Sep 15
COS6:11 pmColorado Springs
4h 59m
1 stop
SEA10:10 pmSeattle/Tacoma Intl
Sep 19
SEA12:35 pmSeattle/Tacoma Intl
8h 50m
2 stops
COS10:25 pmColorado Springs
$292
Delta
Sep 9
COS8:15 amColorado Springs
9h 29m
2 stops
SEA4:44 pmSeattle/Tacoma Intl
Sep 22
SEA7:15 amSeattle/Tacoma Intl
9h 16m
2 stops
COS5:31 pmColorado Springs
$298

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to State of Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 10, 2026.
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

Tue 8/25

7:15 am-9:19 am

Nonstop3h 04m

Seattle/Tacoma Intl

Wed 8/26

7:06 pm-10:58 pm

Nonstop2h 52m

$138

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Wed 8/26

11:05 am-1:22 pm

Nonstop3h 17m

Seattle/Tacoma Intl

Thu 8/27

7:06 pm-10:58 pm

Nonstop2h 52m

$138

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Thu 8/27

7:15 am-9:19 am

Nonstop3h 04m

Seattle/Tacoma Intl

Sun 8/30

7:14 am-11:04 am

Nonstop2h 50m

$138

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Fri 8/28

7:15 am-9:19 am

Nonstop3h 04m

Seattle/Tacoma Intl

Sun 8/30

7:14 am-11:04 am

Nonstop2h 50m

$143
Quickest round-trip

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Sat 9/26

7:35 pm-9:30 pm

Nonstop2h 55m

Seattle/Tacoma Intl

Wed 9/30

6:15 pm-10:05 pm

Nonstop2h 50m

$173

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Tue 10/6

5:05 pm-7:05 pm

Nonstop3h 00m

Seattle/Tacoma Intl

Sat 10/10

6:30 am-2:45 pm

1 stop7h 15m

$183

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Fri 8/28

9:03 pm-11:04 pm

Nonstop3h 01m

Seattle/Tacoma Intl

Sun 8/30

5:00 am-8:45 am

Nonstop2h 45m

$197

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Thu 8/27

1:21 pm-3:23 pm

Nonstop3h 02m

Seattle/Tacoma Intl

Sun 8/30

8:07 pm-11:58 pm

Nonstop2h 51m

$197

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Fri 8/28

6:43 pm-8:45 pm

Nonstop3h 02m

Seattle/Tacoma Intl

Sun 8/30

8:40 am-12:26 pm

Nonstop2h 46m

$197

DenverSeattle

DEN Denver Intl - SEA Seattle/Tacoma Intl

DENSEA

Denver Intl

Fri 8/28

5:49 pm-11:26 pm

1 stop6h 37m

Seattle/Tacoma Intl

Sun 8/30

5:00 am-8:45 am

Nonstop2h 45m

$203

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

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?

The month of January is, on average, the cheapest month to fly to State of Washington from Colorado, with most prices found around $177. 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 $207.

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 $286. 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 $378.

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 $312. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $388 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 Seattle/Tacoma Intl 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 $230 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 $198 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

$114

Fastest flight time

2h 15m

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 $114. The best round-trip flight deal from Colorado to State of Washington found on momondo in the last 72 hours is $119.
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 96 airports in State of Washington. From Colorado there are direct flights to Portland (PDX), 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?

  • 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?

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
FrontierPriceFrom $54Free CancellationRating
5.6
2,712 reviews
Search Frontier flights
DeltaPriceFrom $86Free CancellationRating
7.8
8,499 reviews
Search Delta flights
SouthwestPriceFrom $117Free CancellationRating
8.0
4,218 reviews
Search Southwest flights
United AirlinesPriceFrom $117Free CancellationRating
7.4
10,100 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $118Free CancellationRating
7.8
2,817 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $131Free CancellationRating
7.9
12,794 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $244Free CancellationRating
7.1
11,899 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.

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