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Washington, D.C.

$100+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$159
(CheapOair)

One-way from

$100
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$240

Good round-trip deal

$192 or less

Good one-way deal

$134 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. 7% potential increase in price ($20 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 July 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 July 30, 2025.

This Frontier deal was found by Cheapflights users on 7/29. 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 8/126:38 amDEN - DCA
Nonstop3h 26mFrontier
Wed 8/271:00 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 7/29$162
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1012:32 pmDEN - BWI
Nonstop3h 32mFrontier
Mon 10/136:49 pmBWI - DEN
Nonstop4h 05mFrontier
Deal found 7/30$166
This Southwest deal was found by Cheapflights users on 7/28. 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.
Sat 8/305:30 pmDEN - IAD
Nonstop3h 20mSouthwest
Sat 9/67:00 amIAD - DEN
Nonstop3h 40mSouthwest
Deal found 7/28$177
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
Tue 8/1912:45 pmDEN - IAD
1 stop6h 49mFrontier
Sat 8/238:00 amIAD - DEN
1 stop7h 57mFrontier
Deal found 7/29$196
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/202:17 pmDEN - DCA
1 stop7h 06mAmerican Airlines
Tue 9/235:24 pmDCA - DEN
1 stop6h 49mAmerican Airlines
Deal found 7/30$197
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/177:16 amDEN - IAD
2 stops9h 35mAmerican Airlines
Sat 9/206:25 amIAD - DEN
1 stop7h 26mAmerican Airlines
Deal found 7/30$202
This Southwest deal was found by Cheapflights users on 7/27. 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.
Thu 11/611:30 amDEN - DCA
1 stop4h 45mSouthwest
Sun 11/96:00 amDCA - DEN
1 stop5h 25mSouthwest
Deal found 7/27$214
This Southwest deal was found by Cheapflights users on 7/28. 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.
Thu 10/96:55 pmDEN - BWI
Nonstop3h 20mSouthwest
Sun 10/126:55 amBWI - DEN
Nonstop4h 00mSouthwest
Deal found 7/28$217
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/311:59 pmDEN - BWI
1 stop8h 14mAmerican Airlines
Thu 9/411:23 amBWI - DEN
1 stop7h 20mAmerican Airlines
Deal found 7/30$231
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 11/83:35 pmCOS - BWI
1 stop5h 22mUnited Airlines
Tue 11/1110:10 amBWI - COS
1 stop6h 19mUnited Airlines
Deal found 7/28$232
This Orbitz deal was found by Cheapflights users on 7/29. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2812:13 pmDEN - BWI
Nonstop3h 31mMultiple Airlines
Sun 8/3112:23 pmBWI - DEN
1 stop6h 08mMultiple Airlines
Deal found 7/29$233
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:59 amDEN - IAD
1 stop8h 11mDelta
Mon 10/65:52 pmIAD - DEN
1 stop8h 07mDelta
Deal found 7/28$237

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 July 30, 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

Tue 8/12

6:38 am-12:04 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Wed 8/27

1:00 pm-2:59 pm

Nonstop3h 59m

$162

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Fri 10/10

12:32 pm-6:04 pm

Nonstop3h 32m

Baltimore/Washington

Mon 10/13

6:49 pm-8:54 pm

Nonstop4h 05m

$166

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 8/30

5:30 pm-10:50 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

Sat 9/6

7:00 am-8:40 am

Nonstop3h 40m

$177

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 8/19

12:45 pm-9:34 pm

1 stop6h 49m

Washington, D.C. Dulles Intl

Sat 8/23

8:00 am-1:57 pm

1 stop7h 57m

$196

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 9/20

2:17 pm-11:23 pm

1 stop7h 06m

Washington, D.C. Reagan-National

Tue 9/23

5:24 pm-10:13 pm

1 stop6h 49m

$197

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 9/17

7:16 am-6:51 pm

2 stops9h 35m

Washington, D.C. Dulles Intl

Sat 9/20

6:25 am-11:51 am

1 stop7h 26m

$202

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 8/20

11:59 pm-5:22 am

Nonstop3h 23m

Washington, D.C. Dulles Intl

Sat 8/23

10:14 pm-11:59 pm

Nonstop3h 45m

$217

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Thu 10/9

6:55 pm-12:15 am

Nonstop3h 20m

Baltimore/Washington

Sun 10/12

6:55 am-8:55 am

Nonstop4h 00m

$217

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Wed 9/3

11:59 pm-10:13 am

1 stop8h 14m

Baltimore/Washington

Thu 9/4

11:23 am-4:43 pm

1 stop7h 20m

$231

Colorado SpringsBaltimore

COS - BWI

COSBWI

Colorado Springs

Sat 11/8

3:35 pm-10:57 pm

1 stop5h 22m

Baltimore/Washington

Tue 11/11

10:10 am-2:29 pm

1 stop6h 19m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 $241). Flying from Colorado to Washington, D.C. in March is currently the most expensive (average of $290). 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 July 30, 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 July 30, 2025.

The most flights from USCO to WAS are scheduled on a Wednesday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated July 30, 2025.
Read through reviews of airlines operating flights from Colorado to Washington, D.C., such as Southwest, Delta, and Hawaiian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Hawaiian Airlines
7.8
Good
2,611 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 popular is this Colorado to Washington, D.C. flight route?

    The Colorado to Washington, D.C. flight path was viewed by 30 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $100. Users have also found prices from $100 and $104 on Frontier 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. Reagan-National or Denver Intl - Washington, D.C. Dulles Intl 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: United Airlines (69%), Southwest (66%), Frontier( 55%).

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

    While on average a flight from Colorado to Washington, D.C. is generally $242, our data shows the cheapest flight currently is $93. When looking at the most popular route, (Denver Intl - Baltimore/Washington), you can expect to pay $125 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 $241). Flying from Colorado to Washington, D.C. in March is currently the most expensive (average of $290). 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
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Easton
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Bowie

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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$231FlexibilityNo cancel feeOn-time62%
DeltaCheapest$144Average$342FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$448FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$172Average$521FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$190Average$425FlexibilityNo cancel feeOn-time63%

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