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$98+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$185
(Cheapflightsfares)

One-way from

$99
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$307

Good round-trip deal

$128 or less

Good one-way deal

$127 or less
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. 2% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/286:00 pmDCA - DEN
Nonstop4h 05mFrontier
lun. 8/46:38 amDEN - DCA
Nonstop3h 26mFrontier
Deal found 6/12$185
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/98:06 pmIAD - DEN
Nonstop3h 51mUnited Airlines
sáb. 8/166:01 amDEN - IAD
Nonstop3h 26mUnited Airlines
Deal found 6/11$187
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/135:40 pmIAD - DEN
1 stop6h 29mAmerican Airlines
sáb. 9/1311:59 pmDEN - IAD
1 stop6h 47mAmerican Airlines
Deal found 6/10$191
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/117:21 pmBWI - DEN
1 stop15h 12mFrontier
vie. 9/1212:32 pmDEN - BWI
Nonstop3h 32mFrontier
Deal found 6/11$194
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.
sáb. 7/269:20 pmBWI - DEN
Nonstop4h 00mSouthwest
mié. 7/3011:55 pmDEN - BWI
Nonstop3h 20mSouthwest
Deal found 6/10$197
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/195:55 amDCA - DEN
1 stop6h 11mAmerican Airlines
mié. 8/277:22 amDEN - DCA
1 stop6h 54mAmerican Airlines
Deal found 6/12$197
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/43:00 pmIAD - DEN
1 stop19h 33mFrontier
dom. 9/712:34 amDEN - IAD
1 stop11h 41mFrontier
Deal found 6/10$215
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/157:00 pmIAD - DEN
Nonstop3h 55mSouthwest
sáb. 7/196:00 pmDEN - IAD
Nonstop3h 30mSouthwest
Deal found 6/11$217
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/97:19 pmBWI - COS
1 stop6h 33mAmerican Airlines
vie. 7/1110:49 amCOS - BWI
2 stops9h 26mAmerican Airlines
Deal found 6/10$217
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/14:46 pmIAD - DEN
1 stop16h 30mAllegiant Air
jue. 8/75:42 pmDEN - IAD
1 stop18h 41mAllegiant Air
Deal found 6/9$228
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/256:00 amDCA - DEN
1 stop6h 35mSouthwest
lun. 9/297:35 amDEN - DCA
1 stop4h 30mSouthwest
Deal found 6/11$232
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.
mié. 8/66:00 amBWI - COS
1 stop5h 59mDelta
mar. 8/126:00 amCOS - BWI
1 stop7h 34mDelta
Deal found 6/11$237

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 junio 12, 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

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

lun. 7/28

7:00 am-8:56 am

Nonstop3h 56m

Denver Intl

lun. 8/4

6:38 am-12:04 pm

Nonstop3h 26m

$185

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

sáb. 8/9

8:06 pm-9:57 pm

Nonstop3h 51m

Denver Intl

sáb. 8/16

6:01 am-11:27 am

Nonstop3h 26m

$187

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

sáb. 9/13

5:40 pm-10:09 pm

1 stop6h 29m

Denver Intl

sáb. 9/13

11:59 pm-8:46 am

1 stop6h 47m

$191

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

mié. 7/9

5:26 pm-7:31 pm

Nonstop4h 05m

Denver Intl

lun. 7/14

10:57 am-4:31 pm

Nonstop3h 34m

$194

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

sáb. 7/26

9:20 pm-11:20 pm

Nonstop4h 00m

Denver Intl

mié. 7/30

11:55 pm-5:15 am

Nonstop3h 20m

$197

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

mar. 8/19

5:55 am-10:06 am

1 stop6h 11m

Denver Intl

mié. 8/27

7:22 am-4:16 pm

1 stop6h 54m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

jue. 9/4

3:00 pm-8:33 am

1 stop19h 33m

Denver Intl

dom. 9/7

12:34 am-2:15 pm

1 stop11h 41m

$215

BaltimoreColorado Springs

BWI - COS

BWICOS

Baltimore/Washington

mié. 7/9

7:19 pm-11:52 pm

1 stop6h 33m

Colorado Springs

vie. 7/11

10:49 am-10:15 pm

2 stops9h 26m

$217

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

mié. 7/30

7:00 pm-8:55 pm

Nonstop3h 55m

Denver Intl

lun. 8/4

6:00 pm-11:30 pm

Nonstop3h 30m

$227

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

vie. 8/1

4:46 pm-7:16 am

1 stop16h 30m

Denver Intl

jue. 8/7

5:42 pm-2:23 pm

1 stop18h 41m

$228

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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, October is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $197). Flying from Washington, D.C. to Colorado in March is currently the most expensive (average of $278). 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 junio 12, 2025.

When flying from Washington, D.C. to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 junio 12, 2025.

The most flights from WAS to USCO are scheduled on a Wednesday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 junio 12, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Colorado, such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 popular is this Washington, D.C. to Colorado flight route?

    The Washington, D.C. to Colorado flight path was viewed by 105 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    $99 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $99 and $99, 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 United Airlines (85%), Southwest (66%) or Frontier (46%) 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 $755 for a flight from Washington, D.C. to Colorado. The cheapest flight overall is $98 while the most popular route, (Baltimore/Washington - Denver Intl) is currently priced at $170.

  • 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Colorado (average of $197). Flying from Washington, D.C. to Colorado in March is currently the most expensive (average of $278). 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 7 airlines flying from Washington, D.C. to Colorado

Discover the top 7 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$229FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$155Average$275FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$166Average$503FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$186Average$578FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$215Average$321FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$339FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$217Average$436FlexibilityNo cancel feeOn-time63%

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