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$47+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Frontier deal was found by Cheapflights users on 1/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Wed 2/251:39 pm
DEN
-
DCA
Nonstop3h 20m
Frontier
Deal found 1/28$103
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2810:29 am
IAD
-
DEN
1 stop13h 06m
Frontier
Sat 3/78:50 am
DEN
-
IAD
1 stop13h 41m
Frontier
Deal found 1/27$106
This Cheapflightsfares deal was found by Cheapflights users on 1/29. 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.
Sat 2/218:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Tue 2/247:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 1/29$107
This Cheapflightsfares deal was found by Cheapflights users on 1/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/228:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Wed 2/251:39 pm
DEN
-
DCA
Nonstop3h 20m
Frontier
Deal found 1/27$111
This Frontier deal was found by Cheapflights users on 1/29. 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 3/108:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Fri 3/137:35 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 1/29$112
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2810:29 am
IAD
-
DEN
1 stop13h 06m
Frontier
Wed 3/42:15 pm
DEN
-
IAD
1 stop18h 18m
Frontier
Deal found 1/27$114
This Super.com deal was found by Cheapflights users on 1/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Fri 2/2011:37 am
DEN
-
DCA
Nonstop3h 22m
Frontier
Deal found 1/28$117
This Frontier deal was found by Cheapflights users on 1/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/118:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Wed 2/187:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 1/28$118
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/25:22 pm
IAD
-
DEN
1 stop20h 34m
Frontier
Wed 3/42:15 pm
DEN
-
IAD
1 stop18h 18m
Frontier
Deal found 1/29$119
This Frontier deal was found by Cheapflights users on 1/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Sat 2/287:33 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 1/27$123
This Super.com deal was found by Cheapflights users on 1/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Mon 2/234:38 pm
DEN
-
DCA
Nonstop3h 21m
Frontier
Deal found 1/27$126
This Cheapflightsfares deal was found by Cheapflights users on 1/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Thu 2/264:38 pm
DEN
-
DCA
Nonstop3h 21m
Frontier
Deal found 1/27$127

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$103
(Frontier)

One-way from

$47
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$257

Good round-trip deal

$152 or less

Good one-way deal

$110 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. 3% potential increase in price ($9 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 January 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 January 29, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Colorado that are best for you.

Fly from

Washington, D.C.

Fly to

Colorado

Route

Depart

Return

Price

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 2/27

7:00 pm-9:05 pm

Nonstop4h 05m

Denver Intl

Tue 3/3

4:45 pm-9:55 pm

Nonstop3h 10m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Mon 3/2

10:25 pm-12:30 am

Nonstop4h 05m

Denver Intl

Wed 3/4

7:45 am-1:05 pm

Nonstop3h 20m

$197

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 5/6

7:00 am-3:30 pm

1 stop10h 30m

Denver Intl

Mon 5/11

11:05 am-10:59 pm

1 stop9h 54m

$219

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 2/27

7:35 pm-12:23 am

1 stop6h 48m

Denver Intl

Tue 3/3

12:59 am-9:13 am

1 stop6h 14m

$227

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 2/27

7:35 pm-12:23 am

1 stop6h 48m

Denver Intl

Sat 3/7

6:00 am-3:34 pm

1 stop7h 34m

$227

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 2/27

3:25 pm-11:40 pm

1 stop10h 15m

Denver Intl

Wed 3/4

4:45 pm-9:55 pm

Nonstop3h 10m

$227

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Fri 2/27

7:30 pm-12:23 am

1 stop6h 53m

Denver Intl

Tue 3/3

11:30 am-9:15 pm

1 stop7h 45m

$227

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 2/18

5:10 pm-7:31 pm

Nonstop4h 21m

Denver Intl

Sun 2/22

11:59 pm-5:18 am

Nonstop3h 19m

$237

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 3/5

5:50 am-7:45 am

Nonstop3h 55m

Denver Intl

Mon 3/9

7:05 pm-12:15 am

Nonstop3h 10m

$237

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 2/18

7:35 pm-12:23 am

1 stop6h 48m

Denver Intl

Wed 2/25

4:43 pm-12:21 am

1 stop5h 38m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
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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, March is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $70). Flying from Washington, D.C. to Colorado in June is currently the most expensive (average of $173). 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 January 29, 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 at noon tend to be the most expensive. A flight in the evening could potentially save you up to 22% 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 January 24, 2026.

Travelers seeking maximum savings on their Washington, D.C. to Colorado flight should consider departing on Tuesday 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 January 29, 2026.

The most flights from WAS to USCO are scheduled on a Monday (30 on average). You will have fewer flight options on Saturday, 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 January 29, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United 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
4,267 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,127 reviews
Southwest
8.0
Very good
4,267 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,214 reviews
Southwest
8.0
Very good
4,267 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,205 reviews
Southwest
8.0
Very good
4,267 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,056 reviews
Southwest
8.0
Very good
4,267 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 JetBlue can get you from Washington, D.C. to Colorado in just under 4h 05m. Your travel time can differ by up to 6h 25m. 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?

    $58 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 Baltimore/Washington - Denver Intl, Washington, D.C. Dulles Intl - 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 (93%), Avianca (88%) or United Airlines (87%) 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 $859 for a flight from Washington, D.C. to Colorado. The cheapest flight overall is $132 while the most popular route, (Baltimore/Washington - Denver Intl) is currently priced at $134.

  • 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $70). Flying from Washington, D.C. to Colorado in June is currently the most expensive (average of $173). 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$235FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$310FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$160Average$474FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$396FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$188Average$506FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$325Average$578FlexibilityNo cancel feeOn-time62%

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