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$74+ 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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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Cheap 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 octubre 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$128
(Kiwi.com)

One-way from

$74
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$277

Good round-trip deal

$128 or less

Good one-way deal

$125 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Denver Intl flights.
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From Washington, D.C. (WAS) to Colorado
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One-way flight from Washington, D.C. (WAS) to Colorado
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Highest demand for flights based on searches. 1% potential increase in price ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Colorado.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Colorado.
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Find 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 octubre 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/25. 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. 11/175:58 pmIAD - DEN
1 stop17h 05mFrontier
mar. 12/212:59 amDEN - IAD
1 stop11h 30mFrontier
Deal found 10/25$128
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/118:40 amIAD - DEN
1 stop7h 05mFrontier
mié. 11/1212:34 amDEN - IAD
1 stop12h 41mFrontier
Deal found 10/26$130
This Frontier deal was found by Cheapflights users on 10/28. 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.
jue. 11/132:00 pmDCA - DEN
Nonstop4h 08mFrontier
mar. 11/184:34 pmDEN - DCA
Nonstop3h 25mFrontier
Deal found 10/28$131
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/65:45 amIAD - DEN
1 stop29h 17mFrontier
vie. 12/1212:59 amDEN - IAD
1 stop20h 06mFrontier
Deal found 10/28$132
This Frontier deal was found by Cheapflights users on 10/26. 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.
mié. 12/36:00 pmDCA - DEN
Nonstop4h 12mFrontier
mar. 12/97:40 amDEN - DCA
Nonstop3h 26mFrontier
Deal found 10/26$132
This Frontier deal was found by Cheapflights users on 10/26. 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.
mié. 12/36:00 pmDCA - DEN
Nonstop4h 12mFrontier
lun. 12/84:38 pmDEN - DCA
Nonstop3h 21mFrontier
Deal found 10/26$133
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
dom. 12/75:45 amIAD - DEN
1 stop29h 17mFrontier
vie. 12/121:42 pmDEN - IAD
1 stop7h 23mFrontier
Deal found 10/27$137
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/36:00 pmDCA - DEN
Nonstop4h 12mFrontier
dom. 12/77:40 amDEN - DCA
Nonstop3h 26mFrontier
Deal found 10/28$137
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
sáb. 11/85:58 amIAD - DEN
1 stop16h 01mFrontier
jue. 11/131:42 pmDEN - IAD
1 stop24h 52mFrontier
Deal found 10/26$138
This Frontier deal was found by Cheapflights users on 10/27. 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.
jue. 12/252:00 pmDCA - DEN
Nonstop4h 15mFrontier
lun. 12/297:35 amDEN - DCA
Nonstop3h 26mFrontier
Deal found 10/27$138
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/118:15 amDCA - DEN
Nonstop4h 05mFrontier
lun. 11/174:34 pmDEN - DCA
Nonstop3h 25mFrontier
Deal found 10/28$139
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/122:00 pmDCA - DEN
Nonstop4h 08mFrontier
sáb. 11/157:35 amDEN - DCA
Nonstop3h 27mFrontier
Deal found 10/28$140

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 octubre 28, 2025.
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

mar. 1/27

10:32 pm-12:30 am

Nonstop3h 58m

Denver Intl

sáb. 1/31

7:45 am-1:12 pm

Nonstop3h 27m

$177

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

vie. 2/6

10:32 pm-12:32 am

Nonstop4h 00m

Denver Intl

mié. 2/11

7:50 am-1:17 pm

Nonstop3h 27m

$197

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

dom. 11/16

6:24 am-11:05 am

1 stop6h 41m

Denver Intl

lun. 11/17

11:51 am-10:59 pm

1 stop9h 08m

$201

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

dom. 11/9

6:24 am-11:05 am

1 stop6h 41m

Denver Intl

jue. 11/13

11:51 am-10:59 pm

1 stop9h 08m

$201

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

vie. 12/12

6:00 am-11:05 am

1 stop7h 05m

Denver Intl

sáb. 12/13

11:50 am-10:59 pm

1 stop9h 09m

$207

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

mié. 11/19

6:24 am-11:05 am

1 stop6h 41m

Denver Intl

jue. 12/4

11:50 am-10:58 pm

1 stop9h 08m

$215

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

mié. 12/3

6:29 am-12:53 pm

1 stop8h 24m

Denver Intl

lun. 12/8

12:50 am-9:10 am

1 stop6h 20m

$217

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

jue. 1/22

4:11 pm-6:24 pm

Nonstop4h 13m

Denver Intl

dom. 1/25

7:50 am-1:17 pm

Nonstop3h 27m

$217

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

dom. 12/14

6:00 am-11:05 am

1 stop7h 05m

Denver Intl

sáb. 12/20

10:40 pm-10:34 am

1 stop9h 54m

$221

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

dom. 12/14

7:30 am-12:31 pm

1 stop7h 01m

Denver Intl

mié. 12/17

11:50 am-10:59 pm

1 stop9h 09m

$221

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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, November is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $79). 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 octubre 28, 2025.

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 afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 10% 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 December 16, 2024.

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.

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 octubre 28, 2025.
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
4,240 reviews

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
7,994 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,001 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,032 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,124 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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?

    United Airlines, JetBlue, and Delta can get you from Washington, D.C. to Colorado in just under 3h 58m. Your travel time can differ by up to 4h 26m. 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?

    $86 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $89 and $89, 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 (95%), Southwest (89%) or United Airlines (89%) 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 $998 for a flight from Washington, D.C. to Colorado. The cheapest flight overall is $108 while the most popular route, (Baltimore/Washington - Denver Intl) is currently priced at $130.

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $79). 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.
Dulles Intl to Dallas/Fort Worth flights
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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 octubre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$239FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$128Average$321FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$318FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$160Average$462FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$178Average$420FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$213Average$533FlexibilityNo cancel feeOn-time69%

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