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$76+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
May 30 — Jun 61
Sat 5/30
Sat 6/6
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 April 30, 2026.

This Trip.com deal was found by Cheapflights users on 4/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:07 am
IAD
-
DEN
1 stop13h 17m
Frontier
Fri 6/510:29 pm
DEN
-
IAD
1 stop7h 43m
Frontier
Deal found 4/25$199
This Frontier deal was found by Cheapflights users on 4/29. 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.
Thu 5/147:40 am
IAD
-
DEN
1 stop8h 24m
Frontier
Mon 5/1811:54 pm
DEN
-
IAD
1 stop8h 18m
Frontier
Deal found 4/29$200
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Sat 5/96:49 am
IAD
-
DEN
1 stop9h 15m
Frontier
Sat 5/166:30 am
DEN
-
IAD
1 stop7h 51m
Frontier
Deal found 4/25$201
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Tue 8/257:00 am
DCA
-
DEN
Nonstop4h 09m
Frontier
Mon 9/77:30 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 4/27$201
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Tue 5/197:40 am
IAD
-
DEN
1 stop8h 24m
Frontier
Wed 5/206:30 am
DEN
-
IAD
1 stop8h 57m
Frontier
Deal found 4/28$202
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:12 am
IAD
-
DEN
1 stop16h 57m
Frontier
Mon 6/111:54 pm
DEN
-
IAD
1 stop8h 18m
Frontier
Deal found 4/29$203
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Thu 5/2112:56 pm
IAD
-
DEN
1 stop11h 28m
Frontier
Wed 5/2710:00 am
DEN
-
IAD
1 stop11h 09m
Frontier
Deal found 4/28$204
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sat 5/167:27 pm
IAD
-
DEN
1 stop14h 57m
Frontier
Tue 5/1911:54 pm
DEN
-
IAD
1 stop8h 18m
Frontier
Deal found 4/29$205
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Fri 5/298:47 pm
IAD
-
DEN
1 stop14h 18m
Frontier
Mon 6/16:03 am
DEN
-
IAD
2 stops15h 06m
Frontier
Deal found 4/25$206
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Mon 6/111:07 am
IAD
-
DEN
1 stop13h 17m
Frontier
Wed 6/36:03 am
DEN
-
IAD
2 stops9h 24m
Frontier
Deal found 4/25$207
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Wed 6/311:07 am
IAD
-
DEN
1 stop13h 17m
Frontier
Mon 6/810:29 pm
DEN
-
IAD
2 stops33h 53m
Frontier
Deal found 4/28$209
This Frontier deal was found by Cheapflights users on 4/29. 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.
Wed 6/39:12 am
IAD
-
DEN
1 stop10h 52m
Frontier
Sat 6/610:00 am
DEN
-
IAD
1 stop11h 09m
Frontier
Deal found 4/29$210

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 April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$199
(Trip.com)

One-way from

$76
(Trip.com)

Popular in

March

Cheapest in

January

Average price

$324

Good round-trip deal

$252 or less

Good one-way deal

$129 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. 8% potential increase in price ($26 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 April 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 April 30, 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.Montrose

DCA - MTJ

DCAMTJ

Washington, D.C. Reagan-National

Sun 9/6

4:07 pm-8:12 pm

1 stop6h 05m

Montrose County

Sat 9/12

7:15 am-3:11 pm

1 stop5h 56m

$309

BaltimoreMontrose

BWI - MTJ

BWIMTJ

Baltimore/Washington

Sun 9/6

4:23 pm-8:12 pm

1 stop5h 49m

Montrose County

Sat 9/12

1:40 pm-12:43 am

2 stops9h 03m

$314

BaltimoreMontrose

BWI - MTJ

BWIMTJ

Baltimore/Washington

Mon 9/7

4:23 pm-8:12 pm

1 stop5h 49m

Montrose County

Sat 9/12

7:15 am-3:12 pm

1 stop5h 57m

$322

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 6/9

3:59 pm-9:35 pm

1 stop7h 36m

Denver Intl

Mon 6/15

11:37 pm-10:09 am

1 stop8h 32m

$335

Washington, D.C.Montrose

DCA - MTJ

DCAMTJ

Washington, D.C. Reagan-National

Mon 9/7

6:00 am-2:27 pm

2 stops10h 27m

Montrose County

Sat 9/12

7:15 am-3:11 pm

1 stop5h 56m

$335

BaltimoreColorado Springs

BWI - COS

BWICOS

Baltimore/Washington

Tue 6/2

9:25 am-9:27 pm

2 stops14h 02m

Colorado Springs

Mon 6/8

6:20 pm-6:00 am

1 stop9h 40m

$356

Washington, D.C.Durango

IAD - DRO

IADDRO

Washington, D.C. Dulles Intl

Tue 7/21

2:35 pm-8:22 pm

1 stop7h 47m

Durango La Plata County

Tue 7/28

5:15 am-1:26 pm

1 stop6h 11m

$357

Washington, D.C.Durango

IAD - DRO

IADDRO

Washington, D.C. Dulles Intl

Tue 6/9

6:30 am-11:21 am

1 stop6h 51m

Durango La Plata County

Tue 6/16

12:21 pm-10:44 pm

1 stop8h 23m

$358

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 5/20

10:55 am-4:20 pm

1 stop7h 25m

Denver Intl

Sat 5/23

10:15 am-6:55 pm

1 stop6h 40m

$367

BaltimoreColorado Springs

BWI - COS

BWICOS

Baltimore/Washington

Wed 6/3

3:25 pm-10:20 pm

1 stop8h 55m

Colorado Springs

Mon 6/8

4:40 pm-12:45 am

1 stop6h 05m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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

Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Colorado. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $221). Flying from Washington, D.C. to Colorado in March is currently the most expensive (average of $431). 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 April 30, 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 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 April 25, 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. Saturday 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 April 30, 2026.

The most flights from WAS to USCO are scheduled on a Thursday (38 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (18 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 April 30, 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
4,314 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,314 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,463 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,677 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,681 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,969 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 6h 05m. Your travel time can differ by up to 7h 57m. The distance from Washington, D.C. to Colorado is about 1655 mi. This flight may include one or multiple stops.

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

    $59 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 ITA Airways (93%), Ethiopian Air (87%) or Copa Airlines (84%) 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 $957 for a flight from Washington, D.C. to Colorado. The cheapest flight overall is $137 while the most popular route, (Baltimore/Washington - Denver Intl) is currently priced at $195.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $221). Flying from Washington, D.C. to Colorado in March is currently the most expensive (average of $431). 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 April 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$245FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$113Average$343FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$160Average$493FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$378FlexibilityNo cancel feeOn-time63%
DeltaCheapest$189Average$344FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$210Average$496FlexibilityNo cancel feeOn-time69%

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