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District of Columbia

$75+ Cheap flights from Colorado to District of Columbia

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — IAD
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Colorado to District of Columbia

Keep the following information in mind while searching for Colorado to District of Columbia flight deals. Data was last updated September 14, 2025.

Round-trip from

$134
(Kiwi.com)

One-way from

$75
(Southwest)

Popular in

December

Cheapest in

September

Average price

$234

Good round-trip deal

$149 or less

Good one-way deal

$98 or less
From Colorado to District of Columbia
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One-way flight from Colorado to District of Columbia
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Highest demand for flights based on searches. 7% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Colorado to District of Columbia.
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Price to beat on a one-way flight from Colorado to District of Columbia.
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Find flight deals from Colorado to District of Columbia

Cheapest flights from Colorado to District of Columbia
Explore the most affordable flight options available from Colorado to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sat 9/276:45 amDEN - DCA
Nonstop3h 25mFrontier
Sat 9/276:00 pmDCA - DEN
Nonstop3h 58mFrontier
Deal found 9/13$134
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:38 amDEN - DCA
Nonstop3h 26mFrontier
Sat 10/181:00 pmDCA - DEN
Nonstop4h 07mFrontier
Deal found 9/13$135
This Frontier deal was found by Cheapflights users on 9/12. 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 10/156:38 amDEN - DCA
Nonstop3h 26mFrontier
Fri 10/176:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/12$136
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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.
Fri 10/2411:38 amDEN - DCA
Nonstop3h 21mFrontier
Mon 10/278:00 amDCA - DEN
Nonstop4h 05mFrontier
Deal found 9/12$137
This Frontier deal was found by Cheapflights users on 9/12. 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.
Thu 11/2711:38 amDEN - DCA
Nonstop3h 19mFrontier
Wed 12/37:00 amDCA - DEN
Nonstop4h 17mFrontier
Deal found 9/12$138
This Priceline deal was found by Cheapflights users on 9/12. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2111:38 amDEN - DCA
Nonstop3h 21mFrontier
Tue 10/216:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/12$139
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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.
Sun 10/126:38 amDEN - DCA
Nonstop3h 26mFrontier
Wed 10/157:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/12$140
This Cheapflightsfares deal was found by Cheapflights users on 9/12. 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.
Fri 10/2411:38 amDEN - DCA
Nonstop3h 21mFrontier
Sun 10/268:00 amDCA - DEN
Nonstop4h 05mFrontier
Deal found 9/12$142
This CheapOair deal was found by Cheapflights users on 9/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/114:38 pmDEN - DCA
Nonstop3h 21mFrontier
Sun 12/147:00 amDCA - DEN
Nonstop4h 17mFrontier
Deal found 9/12$143
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/116:38 amDEN - DCA
Nonstop3h 26mFrontier
Sat 10/116:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/12$144
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Tue 10/74:34 pmDEN - DCA
Nonstop3h 25mFrontier
Fri 10/176:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/12$146
This Frontier deal was found by Cheapflights users on 9/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:38 amDEN - DCA
Nonstop3h 26mFrontier
Mon 10/207:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/13$147

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to District of Columbia 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 September 14, 2025.
Use the filters below to find and compare flights from Colorado to District of Columbia that are best for you.

Fly from

Colorado

Fly to

District of Columbia

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 11/15

1:35 pm-6:52 pm

Nonstop3h 17m

Washington, D.C. Dulles Intl

Tue 11/18

5:18 pm-7:29 pm

Nonstop4h 11m

$149

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 10/30

5:56 pm-11:15 pm

Nonstop3h 19m

Washington, D.C. Dulles Intl

Sat 11/1

2:25 pm-4:31 pm

Nonstop4h 06m

$165

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 11/5

10:30 am-3:45 pm

Nonstop3h 15m

Washington, D.C. Dulles Intl

Wed 11/12

7:40 am-9:30 am

Nonstop3h 50m

$177

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

Wed 11/5

5:15 am-2:00 pm

1 stop6h 45m

Washington, D.C. Reagan-National

Wed 11/12

6:10 am-11:15 am

1 stop7h 05m

$180

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

Sat 11/1

5:01 pm-12:59 am

1 stop5h 58m

Washington, D.C. Reagan-National

Wed 11/5

8:40 am-3:47 pm

1 stop9h 07m

$202

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

Wed 12/10

5:15 am-2:00 pm

1 stop6h 45m

Washington, D.C. Reagan-National

Fri 12/12

6:00 am-9:30 am

1 stop5h 30m

$208

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 10/31

3:40 pm-10:35 pm

1 stop4h 55m

Washington, D.C. Reagan-National

Sat 11/1

6:00 am-12:30 pm

2 stops8h 30m

$209

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 10/1

9:40 am-3:07 pm

Nonstop3h 27m

Washington, D.C. Reagan-National

Mon 10/6

6:00 am-10:35 am

1 stop6h 35m

$210

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Wed 11/5

11:50 am-10:10 pm

1 stop8h 20m

Washington, D.C. Dulles Intl

Mon 11/10

7:50 pm-11:10 pm

1 stop5h 20m

$211

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 2/19

5:55 pm-11:16 pm

Nonstop3h 21m

Washington, D.C. Dulles Intl

Sat 2/21

4:08 pm-5:53 pm

Nonstop3h 45m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Colorado 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 Colorado to District of Columbia

What is the cheapest month to book a flight from Colorado to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Colorado to District of Columbia (average of $292). Flying from Colorado to District of Columbia in April is currently the most expensive (average of $337). 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 CO to DC?

Find hourly flight availability from Colorado to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to District of Columbia as you normally would.

Weekly flight availability from Colorado to District of Columbia

Explore weekly flight availability from Colorado to District of Columbia. 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 September 14, 2025.

The most flights from USCO to USDC are scheduled on a Friday (24 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (19 on average).

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated September 14, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Colorado to District of Columbia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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
4,247 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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
8.0
Very good
7,959 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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
8,934 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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
10,000 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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
3,176 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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 Colorado to District of Columbia. 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 Colorado to District of Columbia?

    United Airlines, Southwest, and American Airlines can get you from Colorado to District of Columbia in just under 3h 15m. Your travel time can differ by up to 2h 43m. There are 1448 mi between Colorado and District of Columbia. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Colorado to District of Columbia one-way?

    $84 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Frontier and United Airlines, with prices starting from $88 and $89, respectively.

  • Can I find deals for flights from Colorado to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Colorado to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to District of Columbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to District of Columbia.

  • Can I find deals for business class flights from Colorado to District of Columbia?

    Yes. Cheapflights offers flight deals from Colorado to District of Columbia 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 Colorado to District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Colorado to District of Columbia (average of $292). Flying from Colorado to District of Columbia in April is currently the most expensive (average of $337). 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 Colorado to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Colorado to District of Columbia

Discover the top 5 airlines that operate flights from Colorado to District of Columbia. 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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$234FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$334FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$173Average$516FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$419FlexibilityNo cancel feeOn-time63%

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