Colorado

$69+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Apr 22 — Apr 291
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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 April 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$135
(Cheapflightsfares)

One-way from

$69
(Frontier)

Popular in

December

Cheapest in

September

Average price

$215

Good round-trip deal

$120 or less

Good one-way deal

$79 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Denver Intl flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Denver Intl flights.
From Washington to Colorado
One-way flight from Washington to Colorado
Highest demand for flights based on searches. 4% potential increase in price ($9 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Washington to Colorado.
Price to beat on a one-way flight from Washington to Colorado.

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 April 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
Tue 5/66:20 amPDX - DEN
Nonstop2h 38mFrontier
Wed 5/149:43 pmDEN - PDX
Nonstop2h 44mFrontier
Deal found 4/17$135
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
Tue 6/106:25 amSEA - DEN
Nonstop2h 47mFrontier
Sat 6/149:36 pmDEN - SEA
Nonstop3h 08mFrontier
Deal found 4/17$136
This Travelocity deal was found by Cheapflights users on 4/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:00 amSEA - DEN
Nonstop2h 51mMultiple Airlines
Tue 5/206:00 amDEN - SEA
Nonstop2h 59mMultiple Airlines
Deal found 4/16$153
This Southwest deal was found by Cheapflights users on 4/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:10 amSEA - DEN
Nonstop2h 40mSouthwest
Sat 5/178:45 pmDEN - SEA
Nonstop3h 00mSouthwest
Deal found 4/17$157
This Expedia deal was found by Cheapflights users on 4/17. 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 5/316:35 amPDX - DEN
Nonstop2h 38mMultiple Airlines
Tue 6/311:40 amDEN - PDX
Nonstop2h 30mMultiple Airlines
Deal found 4/17$163
This Frontier deal was found by Cheapflights users on 4/17. 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.
Thu 7/1011:58 amGEG - DEN
Nonstop2h 19mFrontier
Tue 7/159:42 amDEN - GEG
Nonstop2h 21mFrontier
Deal found 4/17$176
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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.
Fri 5/168:23 pmSEA - DEN
Nonstop2h 42mHawaiian Airlines
Tue 5/206:00 amDEN - SEA
Nonstop2h 59mHawaiian Airlines
Deal found 4/16$177
This Southwest deal was found by Cheapflights users on 4/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1312:50 pmPDX - DEN
Nonstop2h 30mSouthwest
Tue 5/205:15 pmDEN - PDX
1 stop7h 10mSouthwest
Deal found 4/17$187
This Delta deal was found by Cheapflights users on 4/16. 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 7/161:00 pmGEG - DEN
1 stop4h 49mDelta
Tue 7/226:30 pmDEN - GEG
1 stop6h 03mDelta
Deal found 4/16$197
This Hawaiian Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 6/43:52 pmPSC - DEN
1 stop7h 13mHawaiian Airlines
Mon 6/96:00 amDEN - PSC
1 stop6h 02mHawaiian Airlines
Deal found 4/17$198
This Expedia deal was found by Cheapflights users on 4/17. 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.
Thu 7/1011:58 amGEG - DEN
Nonstop2h 19mMultiple Airlines
Tue 7/156:00 amDEN - GEG
1 stop7h 28mMultiple Airlines
Deal found 4/17$201
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 5/137:45 amPDX - DEN
Nonstop2h 36mAlaska Airlines
Tue 5/206:00 amDEN - PDX
1 stop5h 53mAlaska Airlines
Deal found 4/17$204

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 April 17, 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

Tue 5/6

6:00 am-9:51 am

Nonstop2h 51m

Denver Intl

Wed 5/7

9:43 pm-11:49 pm

Nonstop3h 06m

$135

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 5/6

6:20 am-9:58 am

Nonstop2h 38m

Denver Intl

Wed 5/14

9:43 pm-11:27 pm

Nonstop2h 44m

$135

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 5/17

6:00 am-9:51 am

Nonstop2h 51m

Denver Intl

Tue 5/20

6:00 am-7:59 am

Nonstop2h 59m

$153

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 5/17

5:10 am-8:50 am

Nonstop2h 40m

Denver Intl

Sat 5/17

8:45 pm-10:45 pm

Nonstop3h 00m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 5/31

6:35 am-10:13 am

Nonstop2h 38m

Denver Intl

Tue 6/3

11:40 am-1:10 pm

Nonstop2h 30m

$163

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 7/10

11:58 am-3:17 pm

Nonstop2h 19m

Denver Intl

Tue 7/15

9:42 am-11:03 am

Nonstop2h 21m

$176

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 5/18

7:10 am-11:00 am

Nonstop2h 50m

Denver Intl

Tue 5/20

6:45 pm-8:43 pm

Nonstop2h 58m

$177

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 5/20

5:15 am-8:58 am

Nonstop2h 43m

Denver Intl

Fri 5/23

6:00 am-8:01 am

Nonstop3h 01m

$187

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 5/13

12:50 pm-4:20 pm

Nonstop2h 30m

Denver Intl

Tue 5/20

5:15 pm-11:25 pm

1 stop7h 10m

$187

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 7/16

1:00 pm-6:49 pm

1 stop4h 49m

Denver Intl

Tue 7/22

6:30 pm-11:33 pm

1 stop6h 03m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

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 April 17, 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 April 17, 2025.

The most flights from USWA to USCO are scheduled on a Thursday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 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 April 17, 2025.
Read through reviews of airlines operating flights from Washington to Colorado, such as Alaska Airlines, Southwest 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.

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
8.0
Very good

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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?

  • 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 $69. Users have also found prices from $79 and $84 on Southwest and United Airlines, 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

Browse thousands of different options on Cheapflights for your next trip

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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.

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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$156FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$219FlexibilityNo cancel feeOn-time85%
DeltaCheapest$102Average$346FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$118Average$387FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$147Average$435FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$148Average$521FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$176Average$453FlexibilityNo cancel feeOn-time71%

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