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Washington, D.C.

$60+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Frontier deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:05 amDEN - BWI
1 stop8h 36mFrontier
Mon 1/121:02 pmBWI - DEN
1 stop11h 57mFrontier
Deal found 12/16$182
This CheapOair deal was found by Cheapflights users on 12/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:25 amDEN - BWI
1 stop27h 21mFrontier
Mon 1/55:41 pmBWI - DEN
1 stop17h 59mFrontier
Deal found 12/15$183
This Frontier deal was found by Cheapflights users on 12/16. 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.
Tue 12/3011:38 amDEN - DCA
Nonstop3h 21mFrontier
Mon 1/128:01 amDCA - DEN
Nonstop4h 13mFrontier
Deal found 12/16$225
This CheapOair deal was found by Cheapflights users on 12/17. 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.
Mon 12/297:00 amDEN - BWI
1 stop26h 29mFrontier
Mon 1/55:41 pmBWI - DEN
1 stop17h 59mFrontier
Deal found 12/17$234
This CheapOair deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:05 amDEN - BWI
1 stop8h 36mFrontier
Fri 1/26:00 amBWI - DEN
1 stop9h 33mFrontier
Deal found 12/16$238
This Super.com deal was found by Cheapflights users on 12/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:38 pmDEN - DCA
Nonstop3h 21mFrontier
Wed 1/78:59 amDCA - DEN
Nonstop4h 13mFrontier
Deal found 12/17$246
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Tue 12/2311:38 amDEN - DCA
Nonstop3h 21mFrontier
Thu 1/86:00 pmDCA - DEN
Nonstop4h 12mFrontier
Deal found 12/16$247
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/317:00 amDEN - BWI
1 stop26h 44mFrontier
Sun 1/45:56 pmBWI - DEN
2 stops49h 44mFrontier
Deal found 12/16$252
This Frontier deal was found by Cheapflights users on 12/16. 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.
Mon 12/2912:14 amDEN - IAD
1 stop9h 24mFrontier
Mon 1/124:22 pmIAD - DEN
1 stop7h 16mFrontier
Deal found 12/16$253
This CheapOair deal was found by Cheapflights users on 12/16. 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 12/186:00 amDEN - BWI
1 stop28h 49mFrontier
Tue 1/68:00 amBWI - DEN
1 stop27h 50mFrontier
Deal found 12/16$255
This Priceline deal was found by Cheapflights users on 12/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:30 amDEN - BWI
1 stop8h 17mFrontier
Fri 1/26:00 amBWI - DEN
1 stop9h 33mFrontier
Deal found 12/15$258
This Super.com deal was found by Cheapflights users on 12/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2011:59 pmDEN - IAD
1 stop13h 54mFrontier
Mon 1/510:43 amIAD - DEN
1 stop24h 57mFrontier
Deal found 12/16$264

Find 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 December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$128
(Frontier)

One-way from

$60
(Trip.com)

Popular in

November

Cheapest in

January

Average price

$329

Good round-trip deal

$173 or less

Good one-way deal

$111 or less
Provider with most accurate pricing for Denver Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. (WAS) flights.
Search Deals
From Colorado to Washington, D.C. (WAS)
Search Deals
One-way flight from Colorado to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Colorado to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Colorado to Washington, D.C. (WAS).
Search Deals

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 December 18, 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

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 2/11

6:40 am-12:04 pm

Nonstop3h 24m

Washington, D.C. Reagan-National

Mon 2/16

6:00 pm-8:16 pm

Nonstop4h 16m

$159

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 1/9

11:35 am-10:59 pm

1 stop9h 24m

Washington, D.C. Reagan-National

Sat 1/10

2:00 pm-4:15 pm

Nonstop4h 15m

$163

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 2/3

9:50 am-3:12 pm

Nonstop3h 22m

Washington, D.C. Dulles Intl

Tue 2/3

5:15 pm-7:26 pm

Nonstop4h 11m

$172

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 1/24

5:00 pm-10:10 pm

Nonstop3h 10m

Washington, D.C. Dulles Intl

Tue 1/27

5:30 pm-7:35 pm

Nonstop4h 05m

$177

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 2/7

7:45 am-1:12 pm

Nonstop3h 27m

Washington, D.C. Dulles Intl

Tue 2/10

5:15 pm-7:26 pm

Nonstop4h 11m

$177

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 1/16

11:35 am-10:59 pm

1 stop9h 24m

Washington, D.C. Reagan-National

Fri 1/23

2:00 pm-4:22 pm

Nonstop4h 22m

$193

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 1/28

7:20 am-3:59 pm

1 stop6h 39m

Washington, D.C. Reagan-National

Sat 1/31

5:55 pm-11:16 pm

1 stop7h 21m

$197

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 1/15

11:59 pm-5:21 am

Nonstop3h 22m

Washington, D.C. Dulles Intl

Wed 1/21

8:15 am-10:27 am

Nonstop4h 12m

$197

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sun 1/18

7:50 am-1:17 pm

Nonstop3h 27m

Washington, D.C. Dulles Intl

Sat 1/24

5:15 pm-7:26 pm

Nonstop4h 11m

$197

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 2/18

11:59 pm-5:18 am

Nonstop3h 19m

Washington, D.C. Dulles Intl

Mon 2/23

10:25 pm-12:30 am

Nonstop4h 05m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

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, February is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $76). Flying from Colorado to Washington, D.C. in May is currently the most expensive (average of $134). 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 December 18, 2025.

It’s typically best to fly out from Colorado to Washington, D.C. in the evening. Doing so could potentially save you 23% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Colorado to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Colorado to Washington, D.C.. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Colorado to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.

The most flights from USCO to WAS are scheduled on a Thursday (37 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (13 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 $177, Frontier can have you in Washington, D.C. from Colorado in 3h 10m. The distance between Colorado and Washington, D.C. is about 1448 mi. All flights are typically nonstop.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $57. Users have also found prices from $88 and $98 on Southwest and American Airlines, 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: ITA Airways (100%), Ethiopian Air (97%), United Airlines( 91%).

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

    While on average a flight from Colorado to Washington, D.C. is generally $1,212, our data shows the cheapest flight currently is $149. When looking at the most popular route, (Denver Intl - Baltimore/Washington), you can expect to pay $149 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, February is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $76). Flying from Colorado to Washington, D.C. in May is currently the most expensive (average of $134). 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
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$239FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$316FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$177Average$374FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$180Average$488FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$416FlexibilityNo cancel feeOn-time71%

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