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$49+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
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 julio 3, 2025.

Round-trip from

$108
(Priceline)

One-way from

$49
(Frontier)

Popular in

May

Cheapest in

October

Average price

$233

Good round-trip deal

$143 or less

Good one-way deal

$69 or less
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. 11% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 3, 2025.

This Priceline deal was found by Cheapflights users on 7/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/59:45 amDEN - GEG
Nonstop2h 21mFrontier
mar. 8/1211:51 amGEG - DEN
Nonstop2h 33mFrontier
Deal found 7/1$108
This Frontier deal was found by Cheapflights users on 7/3. 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.
sáb. 8/29:36 pmDEN - PDX
Nonstop2h 48mFrontier
sáb. 8/96:35 amPDX - DEN
Nonstop2h 39mFrontier
Deal found 7/3$114
This Frontier deal was found by Cheapflights users on 7/2. 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.
vie. 8/110:29 pmDEN - SEA
Nonstop3h 05mFrontier
mié. 8/66:25 amSEA - DEN
Nonstop2h 49mFrontier
Deal found 7/2$129
This Justfly.com deal was found by Cheapflights users on 7/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/299:36 amDEN - PAE
Nonstop3h 03mFrontier
lun. 9/112:34 pmPAE - DEN
Nonstop2h 45mFrontier
Deal found 7/1$130
This Travelocity deal was found by Cheapflights users on 7/2. 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.
sáb. 10/118:50 pmDEN - PDX
Nonstop2h 49mMultiple Airlines
sáb. 10/187:00 amPDX - DEN
1 stop6h 00mMultiple Airlines
Deal found 7/2$157
This Orbitz deal was found by Cheapflights users on 7/1. 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.
jue. 9/259:38 amDEN - GEG
Nonstop2h 20mMultiple Airlines
mar. 9/309:25 amGEG - DEN
1 stop6h 56mMultiple Airlines
Deal found 7/1$172
This Alaska Airlines deal was found by Cheapflights users on 7/2. 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.
mié. 8/279:23 pmDEN - SEA
Nonstop2h 58mAlaska Airlines
dom. 8/315:20 amSEA - DEN
1 stop4h 20mAlaska Airlines
Deal found 7/2$175
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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.
mar. 8/56:00 amDEN - GEG
1 stop7h 29mAlaska Airlines
mar. 8/126:07 pmGEG - DEN
1 stop4h 52mAlaska Airlines
Deal found 7/1$176
This United Airlines deal was found by Cheapflights users on 6/30. 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.
jue. 9/257:00 pmDEN - GEG
Nonstop2h 24mUnited Airlines
lun. 9/295:15 amGEG - DEN
Nonstop2h 18mUnited Airlines
Deal found 6/30$197
This Southwest deal was found by Cheapflights users on 7/2. 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.
mié. 8/209:10 pmDEN - GEG
Nonstop2h 20mSouthwest
dom. 8/245:45 amGEG - DEN
Nonstop2h 15mSouthwest
Deal found 7/2$207
This Delta deal was found by Cheapflights users on 7/2. 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.
jue. 9/46:50 pmGJT - SEA
1 stop4h 24mDelta
mar. 9/95:30 amSEA - GJT
1 stop4h 00mDelta
Deal found 7/2$211
This Delta deal was found by Cheapflights users on 7/2. 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.
sáb. 8/236:50 amDEN - GEG
1 stop4h 44mDelta
jue. 8/285:00 amGEG - DEN
1 stop4h 55mDelta
Deal found 7/2$214

Cheapflights Fare Finder

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 julio 3, 2025.
Use the filters below to find and compare flights from Colorado to Washington that are best for you.

Fly from

Colorado

Fly to

Washington

Route

Depart

Return

Price

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mar. 8/5

9:45 am-11:06 am

Nonstop2h 21m

Spokane

mar. 8/12

11:51 am-3:24 pm

Nonstop2h 33m

$108

DenverPortland

DEN - PDX

DENPDX

Denver Intl

sáb. 8/2

9:36 pm-11:24 pm

Nonstop2h 48m

Portland

sáb. 8/9

6:35 am-10:14 am

Nonstop2h 39m

$114

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

vie. 8/1

10:29 pm-12:34 am

Nonstop3h 05m

Seattle/Tacoma Intl

mié. 8/6

6:25 am-10:14 am

Nonstop2h 49m

$129

DenverEverett

DEN - PAE

DENPAE

Denver Intl

vie. 8/29

9:36 am-11:39 am

Nonstop3h 03m

Everett Paine Field

lun. 9/1

12:34 pm-4:19 pm

Nonstop2h 45m

$130

DenverPortland

DEN - PDX

DENPDX

Denver Intl

jue. 8/14

10:30 pm-12:16 am

Nonstop2h 46m

Portland

sáb. 8/16

3:40 pm-11:59 pm

1 stop7h 19m

$147

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

jue. 9/25

9:38 am-10:58 am

Nonstop2h 20m

Spokane

mar. 9/30

9:25 am-5:21 pm

1 stop6h 56m

$172

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

mié. 8/27

1:05 pm-6:10 pm

1 stop6h 05m

Seattle/Tacoma Intl

sáb. 8/30

3:05 pm-6:45 pm

Nonstop2h 40m

$175

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mar. 8/5

6:00 am-12:29 pm

1 stop7h 29m

Spokane

mar. 8/12

6:07 pm-11:59 pm

1 stop4h 52m

$176

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

jue. 9/25

7:00 pm-8:24 pm

Nonstop2h 24m

Spokane

lun. 9/29

5:15 am-8:33 am

Nonstop2h 18m

$197

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mié. 8/20

6:50 am-10:34 am

1 stop4h 44m

Spokane

vie. 8/22

5:00 am-10:55 am

1 stop4h 55m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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.

Cheapflights Insights

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

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 $390). 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 julio 3, 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 julio 3, 2025.

The most flights from USCO to USWA are scheduled on a Thursday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

How much does it cost to fly round-trip from Colorado to State of Washington?

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 julio 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Colorado to Washington to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

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

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

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
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

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
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

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
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

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
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

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 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 205 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?

    $49 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Alaska Airlines and Hawaiian Airlines, with prices starting from $79 and $79, 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 $390). 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 Colorado to Washington

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

Discover the top 7 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$174FlexibilityNo cancel feeOn-time62%
DeltaCheapest$104Average$337FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$115Average$323FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$135Average$370FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$148Average$471FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$157Average$388FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$199Average$421FlexibilityNo cancel feeOn-time71%

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