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$56+ Cheap flights from Washington, D.C. (WAS) 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Colorado

Keep the following information in mind while searching for Washington, D.C. to Colorado flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$146
(Kiwi.com)

One-way from

$56
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$242

Good round-trip deal

$128 or less

Good one-way deal

$129 or less
From Washington, D.C. (WAS) to Colorado
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One-way flight from Washington, D.C. (WAS) to Colorado
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Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Colorado.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Colorado.
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Find flight deals from Washington, D.C. to Colorado

Cheapest flights from Washington, D.C. to Colorado
Explore the most affordable flight options available from Washington, D.C. to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/271:00 pmDCA - DEN
Nonstop4h 00mFrontier
vie. 10/36:45 amDEN - DCA
Nonstop3h 25mFrontier
Deal found 9/10$147
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/1110:09 pmIAD - DEN
Nonstop3h 48mUnited Airlines
mié. 10/1511:59 pmDEN - IAD
Nonstop3h 23mUnited Airlines
Deal found 9/10$149
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/44:23 pmDCA - DEN
Nonstop3h 56mUnited Airlines
mié. 10/89:40 amDEN - DCA
Nonstop3h 27mUnited Airlines
Deal found 9/10$149
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/275:00 pmIAD - DEN
1 stop6h 26mFrontier
jue. 10/301:42 pmDEN - IAD
1 stop7h 47mFrontier
Deal found 9/11$150
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.
mar. 9/237:00 amDCA - DEN
Nonstop3h 58mFrontier
lun. 10/66:45 amDEN - DCA
Nonstop3h 25mFrontier
Deal found 9/10$150
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.
mar. 9/307:00 amDCA - DEN
Nonstop3h 58mFrontier
lun. 10/66:45 amDEN - DCA
Nonstop3h 25mFrontier
Deal found 9/9$151
This Frontier deal was found by Cheapflights users on 9/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/44:24 pmBWI - DEN
1 stop8h 49mFrontier
dom. 10/512:16 pmDEN - BWI
Nonstop3h 26mFrontier
Deal found 9/11$152
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/11:00 pmDCA - DEN
Nonstop4h 00mFrontier
dom. 10/56:45 amDEN - DCA
Nonstop3h 25mFrontier
Deal found 9/9$153
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/286:15 amBWI - COS
1 stop7h 40mSouthwest
mar. 11/46:05 pmCOS - BWI
1 stop9h 40mSouthwest
Deal found 9/10$154
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/15:45 amBWI - DEN
1 stop13h 28mMultiple Airlines
lun. 10/612:16 pmDEN - BWI
Nonstop3h 26mMultiple Airlines
Deal found 9/11$154
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.
dom. 9/287:00 amDCA - DEN
Nonstop3h 58mFrontier
mar. 9/304:30 pmDEN - DCA
Nonstop3h 29mFrontier
Deal found 9/8$154
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/309:52 pmIAD - DEN
1 stop12h 51mFrontier
lun. 11/31:42 pmDEN - IAD
1 stop8h 29mFrontier
Deal found 9/11$155

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Colorado that are best for you.

Fly from

Washington, D.C.

Fly to

Colorado

Route

Depart

Return

Price

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

sáb. 11/15

5:00 pm-10:07 pm

1 stop7h 07m

Denver Intl

mar. 11/18

9:35 am-2:55 pm

Nonstop3h 20m

$155

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

vie. 11/7

6:10 am-8:15 am

Nonstop4h 05m

Denver Intl

mar. 11/11

7:00 am-12:25 pm

Nonstop3h 25m

$165

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

sáb. 11/15

6:30 am-1:55 pm

2 stops9h 25m

Denver Intl

mar. 11/18

1:10 pm-8:45 pm

1 stop5h 35m

$174

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

jue. 11/13

1:50 pm-3:45 pm

Nonstop3h 55m

Denver Intl

sáb. 11/15

6:00 am-3:15 pm

1 stop7h 15m

$175

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

dom. 12/7

7:50 pm-9:40 pm

Nonstop3h 50m

Denver Intl

mar. 12/16

6:30 am-5:05 pm

1 stop8h 35m

$175

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

jue. 11/6

6:20 pm-9:35 pm

1 stop5h 15m

Denver Intl

sáb. 11/8

7:45 am-1:05 pm

Nonstop3h 20m

$175

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

jue. 2/26

10:05 pm-11:50 pm

Nonstop3h 45m

Denver Intl

lun. 3/2

11:50 pm-5:08 am

Nonstop3h 18m

$181

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

vie. 11/14

4:12 pm-6:17 pm

Nonstop4h 05m

Denver Intl

dom. 11/16

5:43 pm-11:04 pm

Nonstop3h 21m

$181

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

jue. 11/6

5:05 am-7:00 am

Nonstop3h 55m

Denver Intl

dom. 11/9

7:50 am-1:10 pm

Nonstop3h 20m

$181

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

vie. 11/14

3:30 pm-5:35 pm

Nonstop4h 05m

Denver Intl

dom. 11/16

5:30 am-10:55 am

Nonstop3h 25m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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

Have a flexible travel schedule? Discover the best time to fly to Colorado from Washington, D.C. 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, D.C. to Colorado

What is the cheapest month to book a flight from Washington, D.C. to Colorado?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $197). Flying from Washington, D.C. 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 WAS to CO?

Find hourly flight availability from Washington, D.C. 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 septiembre 11, 2025.

When flying from Washington, D.C. 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 Washington, D.C. to Colorado

Explore weekly flight availability from Washington, D.C. 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 septiembre 11, 2025.

The most flights from WAS to USCO are scheduled on a Thursday (29 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (21 on average).

How much does it cost to fly round-trip from Washington, D.C. to Colorado?

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 septiembre 11, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Washington, D.C. to Colorado. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to Colorado?

    United Airlines, Southwest, and American Airlines can get you from Washington, D.C. to Colorado in just under 4h 05m. Your travel time can differ by up to 3h 06m. The distance from Washington, D.C. to Colorado is about 1486 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Washington, D.C. to Colorado one-way?

    $75 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $75 and $119, respectively.

  • What are the most popular routes from Washington, D.C. to Colorado?

    The most popular flight routes from Washington, D.C. to Colorado are Baltimore/Washington - Denver Intl, Washington, D.C. Dulles Intl - Denver Intl and Washington, D.C. Reagan-National - Denver Intl.

  • What are the most reliable airlines from Washington, D.C. to Colorado?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to Colorado consider choosing Ethiopian Air (89%), United Airlines (76%) or Copa Airlines (74%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. to Colorado?

    On average you can expect to pay $763 for a flight from Washington, D.C. to Colorado. The cheapest flight overall is $105 while the most popular route, (Baltimore/Washington - Denver Intl) is currently priced at $138.

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

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

  • How can I find direct flights from Washington, D.C. to Colorado?

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

  • Can I find deals for business class flights from Washington, D.C. to Colorado?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Colorado?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $197). Flying from Washington, D.C. 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, D.C. 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, D.C. to Colorado

Discover the top 7 airlines that operate flights from Washington, D.C. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$236FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$128Average$321FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$155Average$275FlexibilityNo cancel feeOn-time83%
DeltaCheapest$158Average$319FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$160Average$469FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$178Average$411FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$203Average$545FlexibilityNo cancel feeOn-time69%

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