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Washington, D.C.

$68+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
May 11 — May 181
Mon 5/11
Mon 5/18
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 April 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Thu 5/1411:59 pm
DEN
-
IAD
1 stop13h 15m
Frontier
Mon 5/186:17 pm
IAD
-
DEN
1 stop30h 07m
Frontier
Deal found 4/6$179
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:31 am
DEN
-
DCA
Nonstop3h 28m
Frontier
Wed 5/277:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Deal found 4/9$184
This Frontier deal was found by Cheapflights users on 4/6. 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 5/1211:54 pm
DEN
-
IAD
1 stop8h 18m
Frontier
Mon 5/183:59 pm
IAD
-
DEN
1 stop8h 40m
Frontier
Deal found 4/6$185
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:27 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Wed 5/137:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Deal found 4/9$185
This Super.com deal was found by Cheapflights users on 4/6. 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 4/2211:34 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Sat 4/251:59 pm
DCA
-
DEN
Nonstop4h 05m
Frontier
Deal found 4/6$186
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 5/411:59 pm
DEN
-
IAD
1 stop8h 13m
Frontier
Fri 5/87:27 pm
IAD
-
DEN
2 stops22h 01m
Frontier
Deal found 4/6$187
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 4/304:36 pm
DEN
-
DCA
Nonstop3h 23m
Frontier
Sun 5/37:59 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Deal found 4/6$187
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:54 pm
DEN
-
IAD
1 stop8h 18m
Frontier
Fri 5/298:47 pm
IAD
-
DEN
1 stop14h 18m
Frontier
Deal found 4/8$189
This Kiwi.com deal was found by Cheapflights users on 4/7. 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 5/2711:54 pm
DEN
-
IAD
1 stop8h 18m
Frontier
Wed 6/107:30 am
IAD
-
DEN
2 stops16h 19m
Frontier
Deal found 4/7$190
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:27 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Wed 5/137:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Deal found 4/9$190
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:59 pm
DEN
-
IAD
1 stop8h 13m
Frontier
Sat 5/96:49 am
IAD
-
DEN
2 stops17h 50m
Frontier
Deal found 4/9$191
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 5/67:31 am
DEN
-
DCA
Nonstop3h 28m
Frontier
Thu 5/71:59 pm
DCA
-
DEN
Nonstop3h 56m
Frontier
Deal found 4/6$191

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 April 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(Kiwi.com)

One-way from

$68
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$297

Good round-trip deal

$207 or less

Good one-way deal

$126 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. 4% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 April 11, 2026.
Use the filters below to find and compare flights from Colorado to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sun 5/10

7:25 pm-12:40 am

Nonstop3h 15m

Washington, D.C. Dulles Intl

Tue 5/19

6:20 am-8:10 am

Nonstop3h 50m

$257

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 5/2

5:35 pm-10:55 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

Sat 5/9

3:55 pm-10:20 pm

1 stop8h 25m

$267

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sun 5/10

7:10 am-4:20 pm

1 stop7h 10m

Washington, D.C. Reagan-National

Tue 5/19

12:27 pm-5:14 pm

1 stop6h 47m

$277

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 5/5

8:20 am-4:10 pm

1 stop5h 50m

Washington, D.C. Reagan-National

Tue 5/12

10:55 am-4:20 pm

1 stop7h 25m

$277

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 5/2

5:45 am-2:00 pm

1 stop6h 15m

Washington, D.C. Reagan-National

Sat 5/9

10:10 am-3:35 pm

2 stops7h 25m

$282

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 5/6

4:30 pm-12:42 am

1 stop6h 12m

Washington, D.C. Dulles Intl

Sat 5/9

6:00 am-12:12 pm

1 stop8h 12m

$297

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 5/7

4:41 pm-12:51 am

1 stop6h 10m

Washington, D.C. Dulles Intl

Tue 5/19

11:15 am-5:14 pm

1 stop7h 59m

$297

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sun 5/10

10:27 am-6:59 pm

1 stop6h 32m

Washington, D.C. Reagan-National

Fri 5/15

5:00 pm-10:40 pm

1 stop7h 40m

$297

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 5/2

5:45 am-3:05 pm

1 stop7h 20m

Washington, D.C. Dulles Intl

Sun 5/10

5:50 am-7:40 am

Nonstop3h 50m

$307

MontroseWashington, D.C.

MTJ - DCA

MTJDCA

Montrose County

Wed 8/12

2:21 pm-11:58 pm

1 stop7h 37m

Washington, D.C. Reagan-National

Tue 8/18

8:20 am-1:34 pm

1 stop7h 14m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $70). Flying from Colorado to Washington, D.C. in May is currently the most expensive (average of $149). 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 April 11, 2026.

It’s typically best to fly out from Colorado to Washington, D.C. in the morning. Doing so could potentially save you 24% on the flight price compared to flying in the evening, 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 April 4, 2026.

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 at noon 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 April 11, 2026.

The most flights from USCO to WAS are scheduled on a Friday (36 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).

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

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 $257, Frontier can have you in Washington, D.C. from Colorado in 3h 15m. The distance between Colorado and Washington, D.C. is about 1448 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 Frontier. According to our data, you can fly for as low as $63. 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 - Washington, D.C. Dulles Intl, Denver Intl - Baltimore/Washington 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 (93%), Ethiopian Air (93%), ITA Airways( 90%).

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

    While on average a flight from Colorado to Washington, D.C. is generally $983, our data shows the cheapest flight currently is $148. When looking at the most popular route, (Denver Intl - Washington, D.C. Dulles Intl), you can expect to pay $196 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, January is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $70). Flying from Colorado to Washington, D.C. in May is currently the most expensive (average of $149). 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
Owings Mills
Springfield
Arlington
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Largo
Bowie
Clinton
Towson
Cordova
Manassas
Falls Church

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 April 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$245FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$328FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$168Average$467FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$393FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$188Average$420FlexibilityNo cancel feeOn-time71%

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