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$58+ Cheap flights from Washington to Colorado

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Washington to Colorado

Keep the following information in mind while searching for Washington to Colorado flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$107
(Cheapflightsfares)

One-way from

$68
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$207

Good round-trip deal

$90 or less

Good one-way deal

$79 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Denver Intl flights.
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From Washington to Colorado
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One-way flight from Washington to Colorado
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Highest demand for flights based on searches. 7% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Washington to Colorado.
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Price to beat on a one-way flight from Washington to Colorado.
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Find flight deals from Washington to Colorado

Cheapest flights from Washington to Colorado
Explore the most affordable flight options available from Washington to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2512:30 pmSEA - DEN
Nonstop2h 56mFrontier
Sat 4/2610:37 pmDEN - SEA
Nonstop3h 07mFrontier
Deal found 3/27$107
This Frontier deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:20 amPDX - DEN
Nonstop2h 36mFrontier
Wed 4/3010:50 pmDEN - PDX
Nonstop2h 52mFrontier
Deal found 3/26$116
This Orbitz deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/295:30 amSEA - DEN
1 stop4h 51mMultiple Airlines
Sat 5/310:36 pmDEN - SEA
Nonstop3h 08mMultiple Airlines
Deal found 3/27$143
This Delta deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/63:15 pmSEA - DEN
Nonstop2h 44mDelta
Tue 5/136:45 pmDEN - SEA
Nonstop2h 58mDelta
Deal found 3/28$157
This Expedia deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:20 amPDX - DEN
Nonstop2h 38mMultiple Airlines
Mon 5/126:37 pmDEN - PDX
Nonstop2h 48mMultiple Airlines
Deal found 3/25$162
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/107:00 amSEA - DEN
1 stop6h 59mUnited Airlines
Tue 5/137:00 pmDEN - SEA
Nonstop3h 02mUnited Airlines
Deal found 3/26$163
This Alaska Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/31:58 pmSEA - DEN
Nonstop2h 40mAlaska Airlines
Wed 5/146:37 pmDEN - SEA
1 stop5h 54mAlaska Airlines
Deal found 3/28$167
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/305:15 amPDX - DEN
1 stop6h 41mDelta
Tue 5/68:15 amDEN - PDX
1 stop5h 13mDelta
Deal found 3/25$177
This Flightnetwork deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2211:49 amGEG - DEN
Nonstop2h 18mFrontier
Sun 5/259:42 amDEN - GEG
Nonstop2h 22mFrontier
Deal found 3/28$178
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/231:45 pmPDX - DEN
1 stop7h 59mUnited Airlines
Wed 4/309:00 pmDEN - PDX
Nonstop2h 48mUnited Airlines
Deal found 3/26$183
This Hawaiian Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/155:20 pmPDX - DEN
1 stop5h 38mHawaiian Airlines
Tue 4/227:00 amDEN - PDX
1 stop7h 50mHawaiian Airlines
Deal found 3/25$186
This Alaska Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2210:35 amPDX - DEN
1 stop7h 22mAlaska Airlines
Tue 4/298:20 amDEN - PDX
Nonstop2h 42mAlaska Airlines
Deal found 3/26$187

Cheapflights Fare Finder

Customize your flight search to find flights from 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, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
Use the filters below to find and compare flights from Washington to Colorado that are best for you.

Fly from

Washington

Fly to

Colorado

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 4/25

12:30 pm-4:26 pm

Nonstop2h 56m

Denver Intl

Sat 4/26

10:37 pm-12:44 am

Nonstop3h 07m

$107

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 4/22

6:20 am-9:56 am

Nonstop2h 36m

Denver Intl

Wed 4/30

10:50 pm-12:42 am

Nonstop2h 52m

$116

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 4/29

5:30 am-11:21 am

1 stop4h 51m

Denver Intl

Sat 5/3

10:36 pm-12:44 am

Nonstop3h 08m

$143

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 5/6

3:15 pm-6:59 pm

Nonstop2h 44m

Denver Intl

Tue 5/13

6:45 pm-8:43 pm

Nonstop2h 58m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 5/10

6:20 am-9:58 am

Nonstop2h 38m

Denver Intl

Mon 5/12

6:37 pm-8:25 pm

Nonstop2h 48m

$162

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 5/10

7:00 am-2:59 pm

1 stop6h 59m

Denver Intl

Tue 5/13

7:00 pm-9:02 pm

Nonstop3h 02m

$163

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 5/3

1:58 pm-5:38 pm

Nonstop2h 40m

Denver Intl

Wed 5/14

6:37 pm-11:31 pm

1 stop5h 54m

$167

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 4/30

5:15 am-12:56 pm

1 stop6h 41m

Denver Intl

Tue 5/6

8:15 am-12:28 pm

1 stop5h 13m

$177

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 5/22

11:49 am-3:07 pm

Nonstop2h 18m

Denver Intl

Sun 5/25

9:42 am-11:04 am

Nonstop2h 22m

$178

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 4/23

1:45 pm-10:44 pm

1 stop7h 59m

Denver Intl

Wed 4/30

9:00 pm-10:48 pm

Nonstop2h 48m

$183

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Colorado

What is the cheapest month to book a flight from State of Washington to Colorado?

Currently, October is the cheapest month in which you can book a flight from State of Washington to Colorado (average of $197). Flying from State of Washington to Colorado in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to CO?

Find hourly flight availability from Washington to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

When flying from State of Washington to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from State of Washington to Colorado

Explore weekly flight availability from Washington to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 28, 2025.

The most flights from USWA to USCO are scheduled on a Thursday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated March 28, 2025.
Read through reviews of airlines operating flights from Washington to Colorado, such as Southwest, Alaska Airlines and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Washington to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this State of Washington to Colorado flight route?

    This flight path from Washington to Colorado was viewed by 302 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from State of Washington to Colorado one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $68. Users have also found prices from $79 and $94 on United Airlines and Southwest, respectively.

  • Can I find deals for flights from Washington to Colorado that include hotel bookings?

    Yes. In addition to deals on Washington to Colorado flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Colorado?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Colorado.

  • Can I find deals for business class flights from Washington to Colorado?

    Yes. Cheapflights offers flight deals from Washington to Colorado by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Colorado?

    Currently, October is the cheapest month in which you can book a flight from State of Washington to Colorado (average of $197). Flying from State of Washington to Colorado in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Washington to Colorado

Discover the top 7 airlines that operate flights from Washington to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$139FlexibilityNo cancel feeOn-time62%
DeltaCheapest$93Average$369FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$98Average$221FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$118Average$383FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$139Average$439FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$148Average$532FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$176Average$416FlexibilityNo cancel feeOn-time71%
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