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$82+ Cheap flights from Washington, D.C. (WAS) to Colorado

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
Apr 17 — Apr 241
Fri 4/17
Fri 4/24
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Colorado

Cheapest flights from Washington, D.C. to Colorado
Explore the most affordable flight options available from Washington, D.C. to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Tue 5/57:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Mon 5/117:31 am
DEN
-
DCA
Nonstop3h 28m
Frontier
Deal found 3/14$145
This Super.com deal was found by Cheapflights users on 3/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Wed 4/224:36 pm
DEN
-
DCA
Nonstop3h 23m
Frontier
Deal found 3/15$146
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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.
Fri 5/16:00 pm
DCA
-
DEN
Nonstop4h 11m
Frontier
Sun 5/37:35 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Deal found 3/15$147
This Frontier deal was found by Cheapflights users on 3/13. 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.
Sun 5/107:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Fri 5/154:27 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Deal found 3/13$148
This Super.com deal was found by Cheapflights users on 3/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:00 pm
DCA
-
DEN
Nonstop4h 11m
Frontier
Mon 4/136:40 am
DEN
-
DCA
Nonstop3h 22m
Frontier
Deal found 3/14$151
This Cheapflightsfares deal was found by Cheapflights users on 3/14. 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 5/151:59 pm
DCA
-
DEN
Nonstop3h 56m
Frontier
Wed 5/207:31 am
DEN
-
DCA
Nonstop3h 28m
Frontier
Deal found 3/14$152
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sun 4/127:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Sat 4/187:35 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Deal found 3/13$155
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 pm
DCA
-
DEN
Nonstop4h 11m
Frontier
Tue 5/54:27 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Deal found 3/17$156
This Frontier deal was found by Cheapflights users on 3/13. 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.
Wed 4/87:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Fri 4/1711:34 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Deal found 3/13$158
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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.
Tue 4/148:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Sun 4/197:35 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Deal found 3/13$159
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:15 pm
IAD
-
DEN
1 stop9h 49m
Frontier
Wed 4/151:09 pm
DEN
-
IAD
1 stop9h 27m
Frontier
Deal found 3/17$177
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:40 am
IAD
-
DEN
1 stop8h 24m
Frontier
Tue 5/126:30 am
DEN
-
IAD
1 stop7h 51m
Frontier
Deal found 3/17$180

Find flight deals from Washington, D.C. to Colorado

Keep the following information in mind while searching for Washington, D.C. to Colorado flight deals. Data was last updated March 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$145
(Kiwi.com)

One-way from

$82
(Trip.com)

Popular in

March

Cheapest in

January

Average price

$362

Good round-trip deal

$216 or less

Good one-way deal

$114 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Denver Intl flights.
Search Deals
From Washington, D.C. (WAS) to Colorado
Search Deals
One-way flight from Washington, D.C. (WAS) to Colorado
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Colorado.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Colorado.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Colorado 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 March 18, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 4/22

4:30 pm-6:30 pm

Nonstop4h 00m

Denver Intl

Wed 4/29

6:10 pm-11:40 pm

Nonstop3h 30m

$217

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 4/29

8:12 pm-10:15 pm

Nonstop4h 03m

Denver Intl

Sat 5/2

7:50 am-1:21 pm

Nonstop3h 31m

$237

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 5/5

5:30 pm-12:05 am

1 stop8h 35m

Denver Intl

Tue 5/12

6:10 pm-11:40 pm

Nonstop3h 30m

$247

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 5/12

6:09 am-11:00 am

1 stop6h 51m

Denver Intl

Wed 5/20

1:20 pm-10:00 pm

1 stop6h 40m

$257

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 4/15

6:00 am-11:31 am

1 stop7h 31m

Denver Intl

Fri 4/17

12:35 am-8:37 am

1 stop6h 02m

$257

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Mon 4/27

5:55 pm-8:00 pm

Nonstop4h 05m

Denver Intl

Sat 5/2

5:45 am-3:05 pm

1 stop7h 20m

$267

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 4/18

12:15 pm-7:10 pm

2 stops8h 55m

Denver Intl

Tue 4/21

1:15 pm-9:55 pm

2 stops6h 40m

$267

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 4/24

10:35 pm-12:44 am

Nonstop4h 09m

Denver Intl

Sun 4/26

6:00 am-11:31 am

Nonstop3h 31m

$277
Quickest round-trip

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 4/23

5:55 pm-8:00 pm

Nonstop4h 05m

Denver Intl

Sat 4/25

5:35 pm-10:55 pm

Nonstop3h 20m

$277

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sun 5/10

6:05 am-9:43 am

1 stop5h 38m

Denver Intl

Fri 5/15

1:20 pm-10:00 pm

1 stop6h 40m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Washington, D.C. to Colorado

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

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $69). Flying from Washington, D.C. to Colorado in June is currently the most expensive (average of $175). 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 WAS to CO?

Find hourly flight availability from Washington, D.C. to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 18, 2026.

One of the essential ways to save on airfare from Washington, D.C. to Colorado is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 16% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Colorado. Price data was last updated on March 14, 2026.

Travelers seeking maximum savings on their Washington, D.C. to Colorado flight should consider departing on Saturday 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.

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

Explore weekly flight availability from Washington, D.C. to Colorado. 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 March 18, 2026.

The most flights from WAS to USCO are scheduled on a Tuesday (33 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

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

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated March 18, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Washington, D.C. to Colorado. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,320 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Southwest
8.0
Very good
4,320 reviews
Southwest
8.0
Very good
4,320 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Delta
7.9
Good
8,286 reviews
Southwest
8.0
Very good
4,320 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
United Airlines
7.4
Good
9,435 reviews
Southwest
8.0
Very good
4,320 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
American Airlines
7.1
Good
11,468 reviews
Southwest
8.0
Very good
4,320 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Frontier
5.7
Fair
3,025 reviews
Southwest
8.0
Very good
4,320 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Related info for your journey

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

    Southwest, United Airlines, and Delta can get you from Washington, D.C. to Colorado in just under 4h. Your travel time can differ by up to 2h 51m. The distance from Washington, D.C. to Colorado is about 1448 mi. This flight may include one or multiple stops.

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

    $64 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and Southwest, with prices starting from $82 and $88, respectively.

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

    The most popular flight routes from Washington, D.C. to Colorado are Washington, D.C. Dulles Intl - Denver Intl, Baltimore/Washington - Denver Intl and Washington, D.C. Reagan-National - Denver Intl.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to Colorado consider choosing Ethiopian Air (84%), Avianca (82%) or Copa Airlines (80%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $811 for a flight from Washington, D.C. to Colorado. The cheapest flight overall is $126 while the most popular route, (Washington, D.C. Dulles Intl - Denver Intl) is currently priced at $225.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $69). Flying from Washington, D.C. to Colorado in June is currently the most expensive (average of $175). 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

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Alternative routes for Washington, D.C. to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Washington, D.C. to Colorado

Discover the top 6 airlines that operate flights from Washington, D.C. to Colorado. 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 March 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$244FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$113Average$343FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$366FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$160Average$474FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$369FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$207Average$489FlexibilityNo cancel feeOn-time69%

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