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$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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$130
(Cheapflightsfares)

One-way from

$69
(Frontier)

Popular in

December

Cheapest in

October

Average price

$225

Good round-trip deal

$148 or less

Good one-way deal

$87 or less
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. 1% potential increase in price ($2 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 June 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 June 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 8/127:01 pmPDX - DEN
Nonstop2h 41mFrontier
Sun 8/1710:30 pmDEN - PDX
Nonstop2h 46mFrontier
Deal found 6/11$130
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 10/3112:53 pmPAE - DEN
Nonstop2h 46mFrontier
Mon 11/39:48 amDEN - PAE
Nonstop3h 10mFrontier
Deal found 6/12$131
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 7/258:01 pmSEA - DEN
Nonstop2h 51mFrontier
Mon 7/2810:29 pmDEN - SEA
Nonstop3h 05mFrontier
Deal found 6/10$137
This Frontier deal was found by Cheapflights users on 6/12. 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 7/1711:58 amGEG - DEN
Nonstop2h 19mFrontier
Sun 7/209:42 amDEN - GEG
Nonstop2h 21mFrontier
Deal found 6/12$139
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 9/277:40 pmSEA - DEN
Nonstop2h 44mDelta
Tue 9/3012:20 pmDEN - SEA
Nonstop3h 11mDelta
Deal found 6/10$157
This Delta deal was found by Cheapflights users on 6/12. 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 7/305:10 pmGEG - DEN
1 stop4h 01mDelta
Tue 8/55:30 amDEN - GEG
1 stop4h 23mDelta
Deal found 6/12$177
This Southwest deal was found by Cheapflights users on 6/12. 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 10/254:30 pmSEA - DEN
Nonstop2h 35mSouthwest
Mon 10/276:15 pmDEN - SEA
Nonstop3h 00mSouthwest
Deal found 6/12$177
This Delta deal was found by Cheapflights users on 6/10. 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 9/35:30 amPDX - DEN
1 stop4h 25mDelta
Sat 9/136:25 pmDEN - PDX
1 stop5h 23mDelta
Deal found 6/10$177
This Southwest deal was found by Cheapflights users on 6/10. 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.
Thu 8/211:45 pmSEA - COS
1 stop7h 45mSouthwest
Sun 8/244:15 pmCOS - SEA
1 stop6h 30mSouthwest
Deal found 6/10$183
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 9/2310:15 amSEA - DEN
Nonstop2h 51mAlaska Airlines
Sat 9/2711:40 amDEN - SEA
1 stop4h 53mAlaska Airlines
Deal found 6/10$187
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 9/31:24 pmPDX - DEN
1 stop6h 03mAlaska Airlines
Tue 9/1611:40 amDEN - PDX
Nonstop2h 43mAlaska Airlines
Deal found 6/10$187
This Delta deal was found by Cheapflights users on 6/10. 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.
Thu 7/249:25 amPSC - DEN
1 stop4h 35mDelta
Tue 7/296:10 pmDEN - PSC
1 stop6h 21mDelta
Deal found 6/10$189

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 June 12, 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

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 8/12

7:01 pm-10:42 pm

Nonstop2h 41m

Denver Intl

Sun 8/17

10:30 pm-12:16 am

Nonstop2h 46m

$130

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Fri 10/31

12:53 pm-4:39 pm

Nonstop2h 46m

Denver Intl

Mon 11/3

9:48 am-11:58 am

Nonstop3h 10m

$131

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 7/25

8:01 pm-11:52 pm

Nonstop2h 51m

Denver Intl

Mon 7/28

10:29 pm-12:34 am

Nonstop3h 05m

$137

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 7/17

11:58 am-3:17 pm

Nonstop2h 19m

Denver Intl

Sun 7/20

9:42 am-11:03 am

Nonstop2h 21m

$139

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 9/27

7:40 pm-11:24 pm

Nonstop2h 44m

Denver Intl

Tue 9/30

12:20 pm-2:31 pm

Nonstop3h 11m

$157

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 10/25

4:30 pm-8:05 pm

Nonstop2h 35m

Denver Intl

Mon 10/27

6:15 pm-8:15 pm

Nonstop3h 00m

$177

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 7/30

5:10 pm-10:11 pm

1 stop4h 01m

Denver Intl

Tue 8/5

5:30 am-8:53 am

1 stop4h 23m

$177

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 9/3

5:30 am-10:55 am

1 stop4h 25m

Denver Intl

Sat 9/13

6:25 pm-10:48 pm

1 stop5h 23m

$177

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Thu 8/21

1:45 pm-10:30 pm

1 stop7h 45m

Colorado Springs

Sun 8/24

4:15 pm-9:45 pm

1 stop6h 30m

$183

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 9/23

10:15 am-2:06 pm

Nonstop2h 51m

Denver Intl

Sat 9/27

11:40 am-3:33 pm

1 stop4h 53m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 June 12, 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 June 12, 2025.

The most flights from USWA to USCO are scheduled on a Thursday (56 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 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 June 12, 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 295 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 $69. Users have also found prices from $77 and $79 on Hawaiian Airlines 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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$153FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$402FlexibilityNo cancel feeOn-time85%
DeltaCheapest$108Average$329FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$121Average$388FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$148Average$492FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$157Average$422FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$176Average$454FlexibilityNo cancel feeOn-time71%

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