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Washington, D.C.

$84+ Cheap flights from Colorado to Washington, D.C. (WAS)

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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Colorado to Washington, D.C.

Keep the following information in mind while searching for Colorado to Washington, D.C. flight deals. Data was last updated September 15, 2025.

Round-trip from

$135
(Cheapflightsfares)

One-way from

$84
(American Airlines)

Popular in

December

Cheapest in

August

Average price

$237

Good round-trip deal

$149 or less

Good one-way deal

$94 or less
From Colorado to Washington, D.C. (WAS)
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One-way flight from Colorado to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 6% potential increase in price ($19 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 September 2025
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Price to beat on a round-trip flight from Colorado to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Colorado to Washington, D.C. (WAS).
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Find flight deals from Colorado to Washington, D.C.

Cheapest flights from Colorado to Washington, D.C.
Explore the most affordable flight options available from Colorado to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/276:45 amDEN - DCA
Nonstop3h 25mFrontier
Sat 9/276:00 pmDCA - DEN
Nonstop3h 58mFrontier
Deal found 9/13$134
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/116:38 amDEN - DCA
Nonstop3h 26mFrontier
Sat 10/181:00 pmDCA - DEN
Nonstop4h 07mFrontier
Deal found 9/13$135
This Frontier deal was found by Cheapflights users on 9/14. 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.
Sat 10/46:45 amDEN - DCA
Nonstop3h 25mFrontier
Sat 10/116:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/14$136
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/2311:38 amDEN - DCA
Nonstop3h 21mFrontier
Mon 10/278:00 amDCA - DEN
Nonstop4h 05mFrontier
Deal found 9/13$137
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/176:38 amDEN - DCA
Nonstop3h 26mFrontier
Mon 10/207:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/14$139
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/126:38 amDEN - DCA
Nonstop3h 26mFrontier
Sat 10/181:00 pmDCA - DEN
Nonstop4h 07mFrontier
Deal found 9/13$140
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Sat 10/46:45 amDEN - DCA
Nonstop3h 25mFrontier
Sun 10/57:00 amDCA - DEN
Nonstop3h 58mFrontier
Deal found 9/15$141
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/56:45 amDEN - DCA
Nonstop3h 25mFrontier
Tue 10/76:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/13$142
This CheapOair deal was found by Cheapflights users on 9/13. 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.
Thu 12/116:40 amDEN - DCA
Nonstop3h 25mFrontier
Sun 12/141:00 pmDCA - DEN
Nonstop4h 06mFrontier
Deal found 9/13$143
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Wed 11/124:34 pmDEN - DCA
Nonstop3h 25mFrontier
Thu 11/208:00 amDCA - DEN
Nonstop4h 13mFrontier
Deal found 9/14$144
This CheapOair deal was found by Cheapflights users on 9/14. 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.
Fri 10/36:45 amDEN - DCA
Nonstop3h 25mFrontier
Sat 10/116:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/14$146
This Frontier deal was found by Cheapflights users on 9/13. 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.
Sat 10/116:38 amDEN - DCA
Nonstop3h 26mFrontier
Mon 10/207:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/13$147

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Washington, D.C. 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 15, 2025.
Use the filters below to find and compare flights from Colorado to Washington, D.C. that are best for you.

Fly from

Colorado

Fly to

Washington, D.C.

Route

Depart

Return

Price

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Sat 10/18

11:20 am-4:45 pm

Nonstop3h 25m

Baltimore/Washington

Sat 10/25

7:05 pm-9:05 pm

Nonstop4h 00m

$147

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Tue 11/11

4:55 pm-10:10 pm

Nonstop3h 15m

Baltimore/Washington

Sat 11/15

8:15 am-10:20 am

Nonstop4h 05m

$147

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sun 10/19

11:59 pm-7:14 pm

1 stop17h 15m

Washington, D.C. Dulles Intl

Tue 10/28

8:47 am-1:45 pm

1 stop6h 58m

$155

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 10/24

1:42 pm-11:29 pm

1 stop7h 47m

Washington, D.C. Dulles Intl

Sun 10/26

8:02 pm-11:16 pm

1 stop29h 14m

$157

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 10/17

12:36 am-8:53 pm

1 stop18h 17m

Washington, D.C. Dulles Intl

Mon 10/27

5:00 pm-9:26 pm

1 stop6h 26m

$157

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Sat 11/1

12:09 pm-9:31 pm

1 stop7h 22m

Washington, D.C. Dulles Intl

Wed 11/5

6:04 am-11:48 am

1 stop7h 44m

$167

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Mon 10/27

5:36 pm-10:57 pm

Nonstop3h 21m

Baltimore/Washington

Thu 10/30

10:10 am-12:17 pm

Nonstop4h 07m

$167

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 10/8

12:34 am-2:25 pm

1 stop11h 51m

Washington, D.C. Dulles Intl

Sun 10/12

7:27 pm-11:16 pm

1 stop29h 49m

$168

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Thu 10/30

12:55 pm-8:50 pm

1 stop5h 55m

Baltimore/Washington

Wed 11/5

7:00 am-9:05 am

Nonstop4h 05m

$173

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Thu 11/6

12:40 pm-5:55 pm

Nonstop3h 15m

Baltimore/Washington

Sat 11/8

3:25 pm-8:45 pm

1 stop7h 20m

$173

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

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

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

Currently, August is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $292). Flying from Colorado to Washington, D.C. in April is currently the most expensive (average of $337). 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 WAS?

Find hourly flight availability from Colorado to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

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

Weekly flight availability from Colorado to Washington, D.C.

Explore weekly flight availability from Colorado to Washington, D.C.. 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 15, 2025.

The most flights from USCO to WAS are scheduled on a Monday (33 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (25 on average).

Related info for your journey

Find useful and relevant information for your journey from Colorado to Washington, D.C.. 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 Colorado to Washington, D.C.?

    For as low as $147, Southwest can have you in Washington, D.C. from Colorado in 3h 25m. The distance between Colorado and Washington, D.C. is about 1486 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $84. Users have also found prices from $84 and $88 on United Airlines and Frontier, respectively.

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

    Most travelers choose Denver Intl - Baltimore/Washington, Denver Intl - Washington, D.C. Dulles Intl or Denver Intl - Washington, D.C. Reagan-National when deciding on the best route from Colorado to Washington, D.C..

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

    Before booking your flight to Washington, D.C. from Colorado, check out the most reliable airlines to get you to your destination on time: Avianca (92%), Brussels Airlines (78%), United Airlines( 76%).

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

    While on average a flight from Colorado to Washington, D.C. is generally $1,314, our data shows the cheapest flight currently is $108. When looking at the most popular route, (Denver Intl - Baltimore/Washington), you can expect to pay $121 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $292). Flying from Colorado to Washington, D.C. in April is currently the most expensive (average of $337). 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

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Woodbridge
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Colorado to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Colorado to Washington, D.C.

Discover the top 5 airlines that operate flights from Colorado to Washington, D.C.. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$234FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$334FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$173Average$516FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$419FlexibilityNo cancel feeOn-time63%

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