HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$31+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 September 11, 2025.

Round-trip from

$57
(Cheapflightsfares)

One-way from

$31
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$173

Good round-trip deal

$120 or less

Good one-way deal

$108 or less
From Washington to Colorado
Search Deals
One-way flight from Washington to Colorado
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Washington to Colorado.
Search Deals
Price to beat on a one-way flight from Washington to Colorado.
Search Deals

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 September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 11/1412:53 pmPAE - DEN
Nonstop2h 46mFrontier
Mon 11/179:48 amDEN - PAE
Nonstop3h 10mFrontier
Deal found 9/10$57
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 10/3112:53 pmPAE - DEN
Nonstop2h 46mFrontier
Mon 11/39:48 amDEN - PAE
Nonstop3h 10mFrontier
Deal found 9/10$58
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 10/312:56 pmPAE - DEN
Nonstop2h 48mFrontier
Fri 10/109:48 amDEN - PAE
Nonstop2h 57mFrontier
Deal found 9/10$74
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:53 pmPAE - DEN
Nonstop2h 46mFrontier
Wed 10/2910:29 pmDEN - PAE
1 stop19h 17mFrontier
Deal found 9/10$86
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/612:56 pmPAE - DEN
Nonstop2h 48mFrontier
Wed 10/810:29 pmDEN - PAE
1 stop19h 05mFrontier
Deal found 9/10$95
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:17 pmPDX - DEN
1 stop28h 09mFrontier
Tue 10/79:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/10$96
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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.
Thu 10/1612:43 pmPDX - DEN
Nonstop2h 43mFrontier
Sat 10/189:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/8$97
This Trip.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/248:43 pmSEA - DEN
Nonstop2h 52mMultiple Airlines
Sat 10/256:20 pmDEN - SEA
Nonstop3h 01mMultiple Airlines
Deal found 9/9$98
This Frontier deal was found by Cheapflights users on 9/9. 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.
Wed 10/17:15 amPDX - DEN
Nonstop2h 43mFrontier
Thu 10/210:29 pmDEN - PDX
Nonstop2h 43mFrontier
Deal found 9/9$98
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:59 pmSEA - DEN
Nonstop2h 47mMultiple Airlines
Fri 10/245:30 amDEN - SEA
Nonstop3h 03mMultiple Airlines
Deal found 9/10$99
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Wed 10/812:43 pmPDX - DEN
Nonstop2h 43mFrontier
Sun 10/1210:29 pmDEN - PDX
1 stop23h 18mFrontier
Deal found 9/10$99
This Trip.com deal was found by Cheapflights users on 9/9. 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.
Thu 10/301:18 pmSEA - DEN
Nonstop2h 53mFrontier
Wed 11/510:00 amDEN - SEA
Nonstop3h 13mFrontier
Deal found 9/9$100

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 September 11, 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

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Fri 10/10

12:53 pm-4:39 pm

Nonstop2h 46m

Denver Intl

Fri 10/17

9:48 am-11:45 am

Nonstop2h 57m

$74

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Fri 11/14

12:53 pm-4:39 pm

Nonstop2h 46m

Denver Intl

Mon 11/17

9:48 am-11:58 am

Nonstop3h 10m

$74

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Fri 10/3

12:56 pm-4:44 pm

Nonstop2h 48m

Denver Intl

Mon 10/6

9:50 am-11:50 am

Nonstop3h 00m

$74

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 10/29

1:20 pm-11:50 pm

2 stops9h 30m

Denver Intl

Wed 11/12

8:55 pm-10:55 pm

Nonstop3h 00m

$109

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 11/5

12:58 pm-4:57 pm

Nonstop2h 59m

Denver Intl

Wed 11/5

10:29 pm-6:32 pm

1 stop21h 03m

$110

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Mon 9/29

11:30 am-9:12 pm

1 stop8h 42m

Denver Intl

Fri 10/3

9:50 am-11:50 am

Nonstop3h 00m

$110

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 10/10

4:11 pm-11:44 pm

1 stop6h 33m

Denver Intl

Fri 10/17

5:30 am-7:33 am

Nonstop3h 03m

$111

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 10/11

6:15 am-3:30 pm

2 stops8h 15m

Denver Intl

Tue 10/14

9:50 pm-11:45 pm

Nonstop2h 55m

$115

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 11/5

10:54 am-2:41 pm

Nonstop2h 47m

Denver Intl

Wed 11/5

8:02 pm-10:13 pm

Nonstop3h 11m

$127

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 10/7

9:15 am-6:10 pm

1 stop7h 55m

Denver Intl

Tue 10/7

9:50 pm-11:45 pm

Nonstop2h 55m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
1
2
3
...
6

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 September 11, 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 September 11, 2025.

The most flights from USWA to USCO are scheduled on a Thursday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

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 September 11, 2025.
Read through reviews of airlines operating flights from Washington to Colorado, such as Alaska Airlines, Southwest, and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Frontier
5.8
Fair
3,177 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 301 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from State of Washington to Colorado?

    Airlines like Frontier, Southwest, and Hawaiian Airlines fly from State of Washington to Colorado in about 2h 46m. The time it takes to get you to your destination can typically vary by up to 6h 44m. The distance from State of Washington to Colorado is about 1034 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $47. Users have also found prices from $67 and $77 on United Airlines and Delta, 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Los Angeles flights
Dallas/Fort Worth to John F Kennedy Intl flights
John F Kennedy Intl to Miami flights
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to O'Hare Intl flights
San Francisco to John F Kennedy Intl flights
LaGuardia to Dallas/Fort Worth flights
Newark to Las Vegas flights
Newark to Fort Lauderdale flights
John F Kennedy Intl to O'Hare Intl flights
Seattle to Las Vegas flights
LaGuardia to O'Hare Intl flights
Newark to Miami flights
LaGuardia to Fort Lauderdale flights
Newark to O'Hare Intl flights
O'Hare Intl to John F Kennedy Intl flights
Los Angeles to Newark flights
John F Kennedy Intl to Dallas/Fort Worth flights
O'Hare Intl to LaGuardia flights
Los Angeles to Seattle flights
LaGuardia to Miami flights
John F Kennedy Intl to San Francisco flights
Dallas/Fort Worth to Newark flights
John F Kennedy Intl to Orlando flights
Newark to Dallas/Fort Worth flights
O'Hare Intl to Newark flights
San Francisco to Newark flights
O'Hare Intl to Dallas/Fort Worth flights
Newark to Los Angeles flights
Dallas/Fort Worth to Denver flights
O'Hare Intl to Las Vegas flights
Los Angeles to LaGuardia flights
Dallas/Fort Worth to Seattle flights
Atlanta to John F Kennedy Intl flights
Los Angeles to O'Hare Intl flights
Seattle to Los Angeles flights
John F Kennedy Intl to Fort Lauderdale flights
Dulles Intl to Dallas/Fort Worth flights
Newark to Orlando flights
Seattle to Dallas/Fort Worth flights
John F Kennedy Intl to Atlanta flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Las Vegas flights
Los Angeles to San Francisco flights
LaGuardia to Denver flights
Fort Lauderdale to LaGuardia flights
Los Angeles to Honolulu flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$66Average$156FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$86Average$371FlexibilityNo cancel feeOn-time85%
DeltaCheapest$115Average$314FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$128Average$376FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$149Average$485FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$167Average$422FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$169Average$444FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.