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Washington, D.C.

$132+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
juil. 9 — juil. 161
jeu. 7/9
jeu. 7/16
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 juin 9, 2026.

This Southwest deal was found by Cheapflights users on 6/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/56:15 am
COS
-
BWI
1 stop8h 50m
Southwest
mar. 8/116:35 am
BWI
-
COS
1 stop8h 05m
Southwest
Deal found 6/7$264
This Kiwi.com deal was found by Cheapflights users on 6/5. 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. 6/306:30 am
DEN
-
BWI
1 stop7h 03m
Frontier
sam. 7/46:28 am
BWI
-
DEN
1 stop9h 31m
Frontier
Deal found 6/5$266
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/2711:52 pm
DEN
-
BWI
1 stop7h 02m
Frontier
mar. 8/47:27 pm
BWI
-
DEN
1 stop14h 53m
Frontier
Deal found 6/8$267
This Frontier deal was found by Cheapflights users on 6/9. 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.
jeu. 7/99:58 am
DEN
-
BWI
1 stop6h 11m
Frontier
jeu. 7/168:36 am
BWI
-
DEN
1 stop7h 24m
Frontier
Deal found 6/9$268
This Frontier deal was found by Cheapflights users on 6/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 7/16:30 am
DEN
-
BWI
1 stop7h 52m
Frontier
ven. 7/109:49 am
BWI
-
DEN
1 stop6h 46m
Frontier
Deal found 6/8$269
This Frontier deal was found by Cheapflights users on 6/9. 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. 6/306:30 am
DEN
-
BWI
1 stop7h 03m
Frontier
mer. 7/89:37 pm
BWI
-
DEN
1 stop13h 26m
Frontier
Deal found 6/9$270
This Frontier deal was found by Cheapflights users on 6/4. 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.
sam. 6/279:58 am
DEN
-
BWI
1 stop6h 35m
Frontier
mar. 7/219:37 pm
BWI
-
DEN
1 stop13h 26m
Frontier
Deal found 6/4$272
This Frontier deal was found by Cheapflights users on 6/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 7/1211:59 pm
DEN
-
BWI
1 stop8h 46m
Frontier
sam. 8/16:35 am
BWI
-
DEN
1 stop9h 25m
Frontier
Deal found 6/7$273
This Frontier deal was found by Cheapflights users on 6/4. 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.
mer. 7/111:49 pm
DEN
-
BWI
1 stop7h 12m
Frontier
dim. 7/199:37 pm
BWI
-
DEN
1 stop13h 26m
Frontier
Deal found 6/4$274
This Kiwi.com deal was found by Cheapflights users on 6/5. 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.
lun. 7/138:03 am
DEN
-
IAD
1 stop5h 37m
Multiple Airlines
mar. 7/218:33 pm
IAD
-
DEN
1 stop14h 30m
Multiple Airlines
Deal found 6/5$275
This Expedia deal was found by Cheapflights users on 6/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/52:09 pm
DEN
-
DCA
1 stop6h 50m
Multiple Airlines
lun. 8/101:59 pm
DCA
-
DEN
Nonstop3h 54m
Multiple Airlines
Deal found 6/7$275
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
mar. 7/216:30 am
DEN
-
BWI
1 stop14h 47m
Frontier
mar. 7/288:36 am
BWI
-
DEN
2 stops15h 05m
Frontier
Deal found 6/7$275

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 juin 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$264
(Southwest)

One-way from

$132
(Delta)

Popular in

June

Cheapest in

January

Average price

$396

Good round-trip deal

$359 or less

Good one-way deal

$191 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. 15% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 juin 9, 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

Colorado SpringsBaltimore

COS - BWI

COSBWI

Colorado Springs

jeu. 8/6

3:00 pm-11:25 pm

1 stop6h 25m

Baltimore/Washington

mar. 8/11

3:15 pm-8:10 pm

1 stop6h 55m

$291

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

lun. 8/3

11:37 pm-10:10 am

1 stop8h 33m

Washington, D.C. Reagan-National

mer. 8/5

6:10 am-1:11 pm

1 stop9h 01m

$333

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

ven. 9/11

8:10 am-4:50 pm

2 stops6h 40m

Baltimore/Washington

mer. 9/16

2:55 pm-6:30 pm

1 stop5h 35m

$346

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

mar. 9/15

1:19 pm-11:43 pm

1 stop8h 24m

Washington, D.C. Reagan-National

mar. 9/22

3:00 pm-10:54 pm

2 stops9h 54m

$360

Colorado SpringsBaltimore

COS - BWI

COSBWI

Colorado Springs

mar. 7/21

6:00 am-9:05 pm

1 stop13h 05m

Baltimore/Washington

mar. 7/28

3:45 pm-11:50 pm

1 stop10h 05m

$361

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

mar. 9/15

7:20 am-6:25 pm

2 stops9h 05m

Washington, D.C. Reagan-National

mar. 9/22

1:00 pm-5:00 pm

1 stop6h 00m

$370

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

mar. 11/3

12:00 pm-10:10 pm

2 stops8h 10m

Washington, D.C. Reagan-National

sam. 11/7

6:10 am-12:00 pm

1 stop7h 50m

$375

Grand JunctionWashington, D.C.

GJT - IAD

GJTIAD

Grand Junction Regnl

sam. 8/22

9:24 am-5:53 pm

1 stop6h 29m

Washington, D.C. Dulles Intl

ven. 8/28

6:30 am-10:44 am

1 stop6h 14m

$380

Colorado SpringsBaltimore

COS - BWI

COSBWI

Colorado Springs

mer. 8/5

6:16 pm-6:20 am

1 stop10h 04m

Baltimore/Washington

sam. 8/15

12:17 pm-9:38 pm

2 stops11h 21m

$380

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mar. 8/4

1:30 pm-9:11 pm

1 stop5h 41m

Washington, D.C. Dulles Intl

sam. 8/15

6:15 am-10:33 am

1 stop6h 18m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

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, August is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $88). Flying from Colorado to Washington, D.C. in January is currently the most expensive (average of $1,082). 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 juin 9, 2026.

It’s typically best to fly out from Colorado to Washington, D.C. in the morning. Doing so could potentially save you 28% on the flight price compared to flying in the evening, which is usually more expensive.

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 juin 9, 2026.

The most flights from USCO to WAS are scheduled on a Tuesday (31 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (24 on average).

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

How far ahead should I book a flight from Colorado to Washington, D.C.?

The price you pay for your flight from Colorado to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 June 8, 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. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 $375, JetBlue can have you in Washington, D.C. from Colorado in 6h 24m. The distance between Colorado and Washington, D.C. is about 1482 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 $60. Users have also found prices from $78 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: Ethiopian Air (98%), ITA Airways (98%), Avianca( 97%).

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

    While on average a flight from Colorado to Washington, D.C. is generally $1,204, our data shows the cheapest flight currently is $186. When looking at the most popular route, (Denver Intl - Washington, D.C. Dulles Intl), you can expect to pay $256 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 $88). Flying from Colorado to Washington, D.C. in January is currently the most expensive (average of $1,082). 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
Tysons
Owings Mills
Springfield
Arlington
Reston
Rockville
Herndon
Fredericksburg
Hyattsville
Manassas
Hanover
Laurel
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Hunt Valley
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 juin 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$262FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$409FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$177Average$418FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$177Average$510FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$476FlexibilityNo cancel feeOn-time71%

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