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$43+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$57
(Cheapflightsfares)

One-way from

$43
(Frontier)

Popular in

December

Cheapest in

March

Average price

$207

Good round-trip deal

$194 or less

Good one-way deal

$132 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. 11% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/16:32 amPDX - DEN
Nonstop2h 41mFrontier
Thu 3/610:50 pmDEN - PDX
Nonstop2h 52mFrontier
Deal found 2/19$75
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/194:22 pmSEA - DEN
Nonstop2h 48mFrontier
Mon 4/2110:37 pmDEN - SEA
Nonstop3h 07mFrontier
Deal found 2/20$94
This Delta deal was found by Cheapflights users on 2/20. 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 3/253:20 pmSEA - DEN
Nonstop2h 50mDelta
Mon 3/317:50 pmDEN - SEA
Nonstop3h 13mDelta
Deal found 2/20$117
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1210:06 amPDX - DEN
Nonstop2h 34mMultiple Airlines
Wed 3/197:00 amDEN - PDX
1 stop4h 52mMultiple Airlines
Deal found 2/19$124
This Expedia deal was found by Cheapflights users on 2/19. 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.
Tue 3/185:42 pmSEA - DEN
Nonstop2h 38mMultiple Airlines
Fri 3/289:56 amDEN - SEA
Nonstop3h 06mMultiple Airlines
Deal found 2/19$133
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 3/205:14 amSEA - DEN
Nonstop2h 42mUnited Airlines
Thu 3/277:00 pmDEN - SEA
Nonstop3h 01mUnited Airlines
Deal found 2/20$138
This Southwest deal was found by Cheapflights users on 2/20. 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.
Wed 4/236:15 amSEA - DEN
2 stops8h 20mSouthwest
Tue 4/298:35 amDEN - SEA
Nonstop2h 55mSouthwest
Deal found 2/20$152
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 3/187:15 amPDX - DEN
1 stop7h 57mAlaska Airlines
Tue 3/252:53 pmDEN - PDX
Nonstop2h 49mAlaska Airlines
Deal found 2/19$187
This United Airlines deal was found by Cheapflights users on 2/20. 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 5/74:20 pmPDX - DEN
Nonstop2h 36mUnited Airlines
Sun 5/117:45 amDEN - PDX
1 stop5h 54mUnited Airlines
Deal found 2/20$188
This Delta deal was found by Cheapflights users on 2/20. 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 3/195:45 pmPSC - DEN
1 stop5h 03mDelta
Sun 3/236:10 amDEN - PSC
1 stop5h 42mDelta
Deal found 2/20$189
This Southwest deal was found by Cheapflights users on 2/19. 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.
Wed 3/1210:50 amPDX - DEN
2 stops7h 15mSouthwest
Wed 3/199:45 pmDEN - PDX
Nonstop2h 45mSouthwest
Deal found 2/19$192
This Delta deal was found by Cheapflights users on 2/20. 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 4/35:10 pmPDX - DEN
1 stop5h 30mDelta
Sat 4/55:45 amDEN - PDX
1 stop4h 23mDelta
Deal found 2/20$197

Find flights from Washington to Colorado within your budget

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 February 20, 2025.

Fly from

Washington

Fly to

Colorado

Route

Depart

Return

Price

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 6/11

6:20 am-9:57 am

Nonstop2h 37m

Denver Intl

Sat 6/14

10:50 pm-12:40 am

Nonstop2h 50m

$72

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 4/19

4:22 pm-8:10 pm

Nonstop2h 48m

Denver Intl

Mon 4/21

10:37 pm-12:44 am

Nonstop3h 07m

$94

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 3/25

3:20 pm-7:10 pm

Nonstop2h 50m

Denver Intl

Mon 3/31

7:50 pm-10:03 pm

Nonstop3h 13m

$117

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 3/12

10:06 am-1:40 pm

Nonstop2h 34m

Denver Intl

Wed 3/19

7:00 am-10:52 am

1 stop4h 52m

$124

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 3/18

5:42 pm-9:20 pm

Nonstop2h 38m

Denver Intl

Fri 3/28

9:56 am-12:02 pm

Nonstop3h 06m

$133

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 3/20

5:14 am-8:56 am

Nonstop2h 42m

Denver Intl

Thu 3/27

7:00 pm-9:01 pm

Nonstop3h 01m

$138

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 4/23

6:15 am-3:35 pm

2 stops8h 20m

Denver Intl

Tue 4/29

8:35 am-10:30 am

Nonstop2h 55m

$152

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 3/18

7:15 am-4:12 pm

1 stop7h 57m

Denver Intl

Tue 3/25

2:53 pm-4:42 pm

Nonstop2h 49m

$187

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 5/7

4:20 pm-7:56 pm

Nonstop2h 36m

Denver Intl

Sun 5/11

7:45 am-12:39 pm

1 stop5h 54m

$188

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Wed 3/19

5:45 pm-11:48 pm

1 stop5h 03m

Denver Intl

Sun 3/23

6:10 am-10:52 am

1 stop5h 42m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Washington to Colorado

Get recent, data-driven insights about flights from Washington to Colorado including ideal travel times, pricing trends, and more.

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 February 20, 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 February 20, 2025.

The most flights from USWA to USCO are scheduled on a Thursday (41 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 February 20, 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
4,411 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 306 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 $43. Users have also found prices from $69 and $80 on Delta and American 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.

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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 6 airlines flying from Washington to Colorado

Discover the top 6 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$136FlexibilityNo cancel feeOn-time62%
DeltaCheapest$90Average$350FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$118Average$374FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$133Average$443FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$142Average$537FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$176Average$421FlexibilityNo cancel feeOn-time71%
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