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$89+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
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 June 15, 2026.

This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:00 am
DCA
-
EGE
1 stop6h 53m
American Airlines
Fri 7/1010:33 am
EGE
-
DCA
1 stop8h 58m
American Airlines
Deal found 6/15$241
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm
IAD
-
EGE
1 stop7h 40m
United Airlines
Fri 11/131:30 pm
EGE
-
IAD
1 stop7h 43m
United Airlines
Deal found 6/14$241
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Wed 8/128:25 am
BWI
-
DEN
1 stop7h 36m
Frontier
Mon 8/1711:59 pm
DEN
-
BWI
1 stop13h 34m
Frontier
Deal found 6/13$257
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 8/86:35 am
BWI
-
DEN
1 stop9h 26m
Frontier
Tue 8/1110:00 am
DEN
-
BWI
1 stop11h 17m
Frontier
Deal found 6/12$258
This Southwest deal was found by Cheapflights users on 6/10. 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.
Tue 8/183:15 pm
BWI
-
COS
1 stop6h 55m
Southwest
Tue 8/251:15 pm
COS
-
BWI
1 stop4h 55m
Southwest
Deal found 6/10$259
This Frontier deal was found by Cheapflights users on 6/12. 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 8/129:37 pm
BWI
-
DEN
1 stop13h 26m
Frontier
Fri 8/145:05 am
DEN
-
BWI
1 stop6h 35m
Frontier
Deal found 6/12$259
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Wed 7/158:36 am
BWI
-
DEN
1 stop7h 24m
Frontier
Thu 7/1611:46 pm
DEN
-
BWI
1 stop29h 40m
Frontier
Deal found 6/13$260
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:05 am
DCA
-
COS
1 stop6h 42m
Delta
Tue 8/181:20 pm
COS
-
DCA
1 stop7h 24m
Delta
Deal found 6/10$261
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/46:28 am
BWI
-
DEN
1 stop9h 31m
Frontier
Wed 7/89:58 am
DEN
-
BWI
1 stop6h 35m
Frontier
Deal found 6/10$261
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
IAD
-
COS
1 stop6h 47m
Delta
Tue 8/186:00 am
COS
-
IAD
1 stop8h 42m
Delta
Deal found 6/11$261
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:05 am
BWI
-
COS
1 stop6h 42m
Delta
Tue 8/1811:27 am
COS
-
BWI
1 stop8h 02m
Delta
Deal found 6/10$263
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Fri 7/39:32 pm
BWI
-
DEN
1 stop13h 31m
Frontier
Wed 7/89:58 am
DEN
-
BWI
1 stop6h 35m
Frontier
Deal found 6/13$263

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 June 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$241
(American Airlines)

One-way from

$89
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$405

Good round-trip deal

$348 or less

Good one-way deal

$196 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. 15% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% 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 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 June 15, 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.Vail

IAD - EGE

IADEGE

Washington, D.C. Dulles Intl

Fri 11/6

2:25 pm-8:05 pm

1 stop7h 40m

Vail Eagle County

Fri 11/13

1:30 pm-11:13 pm

1 stop7h 43m

$241

BaltimoreColorado Springs

BWI - COS

BWICOS

Baltimore/Washington

Tue 9/22

3:15 pm-9:45 pm

2 stops8h 30m

Colorado Springs

Tue 9/29

6:15 am-5:05 pm

2 stops8h 50m

$275

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Sat 10/17

5:27 pm-9:24 pm

1 stop5h 57m

Colorado Springs

Tue 10/20

11:57 am-9:11 pm

1 stop7h 14m

$287

Washington, D.C.Vail

IAD - EGE

IADEGE

Washington, D.C. Dulles Intl

Tue 8/18

10:10 am-2:27 pm

1 stop6h 17m

Vail Eagle County

Tue 8/25

7:05 am-5:50 pm

1 stop8h 45m

$288

BaltimoreColorado Springs

BWI - COS

BWICOS

Baltimore/Washington

Tue 9/15

2:28 pm-7:36 pm

1 stop7h 08m

Colorado Springs

Sat 9/19

6:14 pm-6:18 am

1 stop10h 04m

$290

Washington, D.C.Colorado Springs

DCA - COS

DCACOS

Washington, D.C. Reagan-National

Tue 8/11

6:05 am-10:47 am

1 stop6h 42m

Colorado Springs

Fri 8/21

1:20 pm-11:48 pm

1 stop8h 28m

$314
Quickest round-trip

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Mon 7/27

3:15 pm-6:40 pm

1 stop5h 25m

Denver Intl

Wed 8/5

1:40 pm-7:05 pm

Nonstop3h 25m

$321

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Mon 8/10

5:00 pm-10:42 pm

1 stop7h 42m

Denver Intl

Mon 8/17

11:37 pm-10:10 am

1 stop8h 33m

$329

Washington, D.C.Colorado Springs

DCA - COS

DCACOS

Washington, D.C. Reagan-National

Tue 8/11

6:05 am-10:47 am

1 stop6h 42m

Colorado Springs

Sat 8/15

6:30 am-2:53 pm

1 stop6h 23m

$330

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 9/15

8:00 am-12:14 pm

1 stop6h 14m

Colorado Springs

Sat 9/19

6:14 pm-9:10 am

2 stops12h 56m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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

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 $228). Flying from Washington, D.C. to Colorado in June is currently the most expensive (average of $463). 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 June 15, 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 afternoon could potentially save you up to 13% on airfare.

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 June 15, 2026.

The most flights from WAS to USCO are scheduled on a Monday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (25 on average).

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

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

Booking 49 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 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 June 13, 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. Saturday 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 June 15, 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
7.9
Good
4,235 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
7.9
Good
4,235 reviews
Southwest
7.9
Good
4,235 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Delta
7.9
Good
8,396 reviews
Southwest
7.9
Good
4,235 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
United Airlines
7.4
Good
9,831 reviews
Southwest
7.9
Good
4,235 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
American Airlines
7.1
Good
11,660 reviews
Southwest
7.9
Good
4,235 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Frontier
5.6
Fair
2,887 reviews
Southwest
7.9
Good
4,235 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

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, Southwest, and Delta can get you from Washington, D.C. to Colorado in just under 7h 08m. Your travel time can differ by up to 1h 22m. The distance from Washington, D.C. to Colorado is about 1499 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 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 (95%), Avianca (90%) or United Airlines (90%) 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 $1,129 for a flight from Washington, D.C. to Colorado. The cheapest flight overall is $186 while the most popular route, (Washington, D.C. Dulles Intl - Denver Intl) is currently priced at $228.

  • 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 $228). Flying from Washington, D.C. to Colorado in June is currently the most expensive (average of $463). 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 Seattle flights
Reagan-National to Seattle 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 June 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$253FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$113Average$364FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$166Average$517FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$391FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$217Average$513FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$467FlexibilityNo cancel feeOn-timeN/A

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