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Cheap flights from Washington to Colorado from $39

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 3/5. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:57 pm - 10:49 pm
SEA
-
DEN
2h 52mnonstop
Frontier Logo
12:51 pm - 3:05 pm
DEN
-
SEA
3h 14mnonstop
$76Frontier
Wed, Apr 15 - Mon, Apr 20
Frontier Logo
6:57 pm - 10:49 pm
SEA
-
DEN
2h 52mnonstop
Frontier Logo
7:15 am - 9:27 am
DEN
-
SEA
3h 12mnonstop
$77Frontier
Thu, Apr 16 - Tue, Apr 21
Alaska Airlines Logo
7:05 am - 10:42 am
PDX
-
DEN
2h 37mnonstop
Alaska Airlines Logo
11:38 am - 1:38 pm
DEN
-
PDX
3h 00mnonstop
$137Alaska Airlines
Wed, Mar 4 - Wed, Mar 11
Delta Logo
5:45 am - 11:15 am
PDX
-
COS
4h 30m
1 stop
Delta Logo
7:55 am - 12:25 pm
COS
-
PDX
5h 30m
1 stop
$157Delta
Tue, Feb 24 - Sat, Feb 28
Delta Logo
5:45 am - 11:15 am
PDX
-
COS
4h 30m
1 stop
Delta Logo
7:55 am - 6:48 pm
COS
-
PDX
11h 53m
2 stops
$162Delta
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
6:40 am - 3:58 pm
PDX
-
COS
8h 18m
1 stop
American Airlines Logo
4:48 pm - 11:09 pm
COS
-
PDX
7h 21m
1 stop
$203American Airlines
Wed, Mar 4 - Wed, Mar 11
United Airlines Logo
5:00 am - 8:30 am
PSC
-
DEN
2h 30mnonstop
United Airlines Logo
7:14 pm - 8:54 pm
DEN
-
PSC
2h 40mnonstop
$209United Airlines
Tue, Feb 24 - Thu, Mar 12
United Airlines Logo
5:00 am - 12:32 pm
SEA
-
MTJ
6h 32m
1 stop
United Airlines Logo
1:42 pm - 6:04 pm
MTJ
-
SEA
5h 22m
1 stop
$211United Airlines
Thu, Mar 19 - Tue, Mar 24
Alaska Airlines Logo
6:11 pm - 11:56 pm
PSC
-
DEN
4h 45m
1 stop
Alaska Airlines Logo
7:25 pm - 11:59 pm
DEN
-
PSC
5h 34m
1 stop
$238Alaska Airlines
Mon, Apr 20 - Fri, Apr 24
American Airlines Logo
12:59 am - 9:52 am
SEA
-
DRO
7h 53m
1 stop
American Airlines Logo
11:37 am - 5:43 pm
DRO
-
SEA
7h 06m
1 stop
$360American Airlines
Sun, Mar 1 - Thu, Mar 5

Frontier flights from State of Washington to Colorado

Our best Frontier deals on State of Washington to Colorado flight tickets
Frontier
Apr 15
SEA6:57 pmSeattle/Tacoma Intl
2h 52m
DEN10:49 pmDenver Intl
Apr 20
DEN12:51 pmDenver Intl
3h 14m
SEA3:05 pmSeattle/Tacoma Intl
$76
Frontier
Apr 16
SEA6:57 pmSeattle/Tacoma Intl
2h 52m
DEN10:49 pmDenver Intl
Apr 21
DEN7:15 amDenver Intl
3h 12m
SEA9:27 amSeattle/Tacoma Intl
$77
Frontier
Mar 5
GEG12:22 pmSpokane
2h 23m
DEN3:45 pmDenver Intl
Mar 12
DEN9:10 amDenver Intl
2h 37m
GEG10:47 amSpokane
$79

United Airlines flights from State of Washington to Colorado

Our best United Airlines deals on State of Washington to Colorado flight tickets
United Airlines
Mar 4
PDX4:00 pmPortland
2h 33m
DEN7:33 pmDenver Intl
Mar 11
DEN8:00 amDenver Intl
2h 54m
PDX9:54 amPortland
$137
United Airlines
Feb 23
PDX5:05 amPortland
2h 33m
DEN8:38 amDenver Intl
Feb 25
DEN11:50 amDenver Intl
2h 54m
PDX1:44 pmPortland
$147
United Airlines
Feb 25
PDX5:05 amPortland
2h 33m
DEN8:38 amDenver Intl
Mar 1
DEN7:48 amDenver Intl
2h 54m
PDX9:42 amPortland
$174

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Colorado 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 February 4, 2026.
Use the filters below to find and compare flights from Washington to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 4/15

6:57 pm-10:49 pm

Nonstop2h 52m

Denver Intl

Mon 4/20

12:51 pm-3:05 pm

Nonstop3h 14m

$76

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 4/16

6:57 pm-10:49 pm

Nonstop2h 52m

Denver Intl

Tue 4/21

7:15 am-9:27 am

Nonstop3h 12m

$77

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 3/4

7:05 am-10:42 am

Nonstop2h 37m

Denver Intl

Wed 3/11

11:38 am-1:38 pm

Nonstop3h 00m

$137

PortlandColorado Springs

PDX - COS

PDXCOS

Portland

Tue 2/24

5:45 am-11:15 am

1 stop4h 30m

Colorado Springs

Sat 2/28

7:55 am-12:25 pm

1 stop5h 30m

$157

PortlandColorado Springs

PDX - COS

PDXCOS

Portland

Tue 2/24

5:45 am-11:15 am

1 stop4h 30m

Colorado Springs

Tue 3/3

7:55 am-6:48 pm

2 stops11h 53m

$162

PortlandColorado Springs

PDX - COS

PDXCOS

Portland

Wed 3/4

6:40 am-3:58 pm

1 stop8h 18m

Colorado Springs

Wed 3/11

4:48 pm-11:09 pm

1 stop7h 21m

$203

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Tue 2/24

5:00 am-8:30 am

Nonstop2h 30m

Denver Intl

Thu 3/12

7:14 pm-8:54 pm

Nonstop2h 40m

$209

SeattleMontrose

SEA - MTJ

SEAMTJ

Seattle/Tacoma Intl

Thu 3/19

5:00 am-12:32 pm

1 stop6h 32m

Montrose County

Tue 3/24

1:42 pm-6:04 pm

1 stop5h 22m

$211

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Mon 4/20

6:11 pm-11:56 pm

1 stop4h 45m

Denver Intl

Fri 4/24

7:25 pm-11:59 pm

1 stop5h 34m

$238

SeattleDurango

SEA - DRO

SEADRO

Seattle/Tacoma Intl

Sun 3/1

12:59 am-9:52 am

1 stop7h 53m

Durango La Plata County

Thu 3/5

11:37 am-5:43 pm

1 stop7h 06m

$360

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 Colorado from

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

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 $188. The month of February is another great option to travel to Colorado, with average flight prices from State of Washington averaging around $197.

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, Monday 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 $337.

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

The cheapest time of day to fly to Colorado is at noon when flights can be purchased for as low as $248. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $319 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 $214 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 $177 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

$136

Fastest flight time

2h 13m

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 $136. The best round-trip flight deal from State of Washington to Colorado found on momondo in the last 72 hours is $204.
The fastest flight from State of Washington to Colorado takes 2h 13m
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?

  • 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?

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
FrontierPriceFrom $57Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $78Free CancellationRating
7.8
2,831 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $98Free CancellationRating
7.9
8,138 reviews
Search Delta flights
Alaska AirlinesPriceFrom $117Free CancellationRating
8.0
11,834 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $127Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
United AirlinesPriceFrom $131Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
11,218 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.

An easier way to manage your Colorado trip

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