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$48+ Cheap flights from Colorado to Washington

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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Cheap flight deals from Colorado to Washington

Keep the following information in mind while searching for Colorado to Washington flight deals. Data was last updated February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$58
(Frontier)

One-way from

$48
(Cheapflightsfares)

Popular in

December

Cheapest in

April

Average price

$178

Good round-trip deal

$217 or less

Good one-way deal

$112 or less
Provider with most accurate pricing for Denver Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Seattle/Tacoma Intl flights.
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From Colorado to Washington
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One-way flight from Colorado to Washington
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Highest demand for flights based on searches. 8% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 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 Colorado to Washington.
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Price to beat on a one-way flight from Colorado to Washington.
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Find flight deals from Colorado to Washington

Cheapest flights from Colorado to Washington
Explore the most affordable flight options available from Colorado to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/22. 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.
Wed 4/1610:45 pmDEN - PDX
Nonstop2h 52mFrontier
Tue 4/226:20 amPDX - DEN
Nonstop2h 36mFrontier
Deal found 2/22$77
This Cheapflightsfares deal was found by Cheapflights users on 2/22. 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.
Sun 3/99:56 amDEN - SEA
Nonstop3h 06mFrontier
Fri 3/142:02 pmSEA - DEN
Nonstop2h 48mFrontier
Deal found 2/22$91
This Expedia deal was found by Cheapflights users on 2/21. 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.
Wed 3/197:00 amDEN - SEA
Nonstop3h 07mMultiple Airlines
Thu 3/202:02 pmSEA - DEN
Nonstop2h 48mMultiple Airlines
Deal found 2/21$103
This Delta deal was found by Cheapflights users on 2/22. 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.
Fri 4/187:50 pmDEN - SEA
Nonstop3h 13mDelta
Sun 4/209:45 amSEA - DEN
Nonstop2h 45mDelta
Deal found 2/22$117
This Southwest deal was found by Cheapflights users on 2/22. 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 4/239:35 pmDEN - SEA
Nonstop2h 55mSouthwest
Tue 4/299:15 amSEA - DEN
2 stops7h 55mSouthwest
Deal found 2/22$132
This Expedia deal was found by Cheapflights users on 2/21. 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.
Wed 4/2310:50 pmDEN - PDX
Nonstop2h 52mMultiple Airlines
Mon 4/285:40 pmPDX - DEN
Nonstop2h 35mMultiple Airlines
Deal found 2/21$143
This Delta deal was found by Cheapflights users on 2/21. 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 4/238:05 amCOS - SEA
2 stops9h 45mDelta
Tue 4/291:30 pmSEA - COS
1 stop4h 52mDelta
Deal found 2/21$164
This United deal was found by Cheapflights users on 2/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/159:00 pmDEN - SEA
Nonstop3h 01mUnited Airlines
Thu 3/205:14 amSEA - DEN
Nonstop2h 42mUnited Airlines
Deal found 2/21$177
This Frontier deal was found by Cheapflights users on 2/22. 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 6/199:48 amDEN - GEG
Nonstop2h 21mFrontier
Sun 6/2211:54 amGEG - DEN
Nonstop2h 21mFrontier
Deal found 2/22$183
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 3/256:10 pmDEN - PSC
1 stop6h 47mDelta
Tue 4/85:10 pmPSC - DEN
1 stop4h 17mDelta
Deal found 2/20$189
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 4/176:30 amDEN - PDX
1 stop7h 39mDelta
Mon 4/215:15 pmPDX - DEN
1 stop5h 25mDelta
Deal found 2/20$197
This Alaska Airlines deal was found by Cheapflights users on 2/22. 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.
Mon 3/102:50 pmDEN - PDX
Nonstop2h 47mAlaska Airlines
Fri 3/145:15 pmPDX - DEN
1 stop5h 34mAlaska Airlines
Deal found 2/22$200

Find flights from Colorado to Washington within your budget

Customize your flight search to find flights from Colorado to Washington 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 22, 2025.

Fly from

Colorado

Fly to

Washington

Route

Depart

Return

Price

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 7/24

9:48 am-11:09 am

Nonstop2h 21m

Spokane

Tue 7/29

11:54 am-3:15 pm

Nonstop2h 21m

$58

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Wed 4/16

10:45 pm-12:37 am

Nonstop2h 52m

Portland

Tue 4/22

6:20 am-9:56 am

Nonstop2h 36m

$77

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Sun 3/9

9:56 am-12:02 pm

Nonstop3h 06m

Seattle/Tacoma Intl

Fri 3/14

2:02 pm-5:50 pm

Nonstop2h 48m

$91

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 3/19

7:00 am-9:07 am

Nonstop3h 07m

Seattle/Tacoma Intl

Thu 3/20

2:02 pm-5:50 pm

Nonstop2h 48m

$103

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Fri 4/18

7:50 pm-10:03 pm

Nonstop3h 13m

Seattle/Tacoma Intl

Sun 4/20

9:45 am-1:30 pm

Nonstop2h 45m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 4/23

9:35 pm-11:30 pm

Nonstop2h 55m

Seattle/Tacoma Intl

Tue 4/29

9:15 am-6:10 pm

2 stops7h 55m

$132

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Wed 4/23

10:50 pm-12:42 am

Nonstop2h 52m

Portland

Mon 4/28

5:40 pm-9:15 pm

Nonstop2h 35m

$143

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Wed 4/23

8:05 am-4:50 pm

2 stops9h 45m

Seattle/Tacoma Intl

Tue 4/29

1:30 pm-7:22 pm

1 stop4h 52m

$164

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Sat 3/15

9:00 pm-11:01 pm

Nonstop3h 01m

Seattle/Tacoma Intl

Thu 3/20

5:14 am-8:56 am

Nonstop2h 42m

$177

DenverPasco

DEN - PSC

DENPSC

Denver Intl

Thu 4/10

6:10 am-10:50 am

1 stop5h 40m

Pasco Tri Cities

Mon 4/14

12:30 pm-7:14 pm

1 stop5h 44m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

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

Have a flexible travel schedule? Discover the best time to fly to Washington from Colorado 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 Colorado to Washington

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to State of Washington (average of $238). Flying from Colorado to State of Washington in July is currently the most expensive (average of $411). 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 CO to WA?

Find hourly flight availability from Colorado to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to State of Washington as you normally would.

Weekly flight availability from Colorado to State of Washington

Explore weekly flight availability from Colorado to Washington. 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 22, 2025.

The most flights from USCO to USWA are scheduled on a Wednesday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated February 22, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Colorado to Washington have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,396 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Crew

8.7

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
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Crew

8.7

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
9,702 reviews
Southwest
8.1
Very good
4,396 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Crew

8.7

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
8,203 reviews
Southwest
8.1
Very good
4,396 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Crew

8.7

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
2,314 reviews
Southwest
8.1
Very good
4,396 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Crew

8.7

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
8,754 reviews
Southwest
8.1
Very good
4,396 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Crew

8.7

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 Colorado to Washington. 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 Colorado to State of Washington flight route?

    This flight path from Colorado to Washington was viewed by 223 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 Colorado to State of Washington one-way?

    $48 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $80 and $89, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado to Washington 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 Colorado to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Colorado to State of Washington (average of $238). Flying from Colorado to State of Washington in July is currently the most expensive (average of $411). 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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Top 6 airlines flying from Colorado to Washington

Discover the top 6 airlines that operate flights from Colorado to Washington. 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 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$148FlexibilityNo cancel feeOn-time62%
DeltaCheapest$92Average$358FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$118Average$367FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$134Average$395FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$139Average$490FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$206Average$428FlexibilityNo cancel feeOn-time71%
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