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District of Columbia

$71+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — IAD
Dec 1 — Dec 81
Mon 12/1
Mon 12/8
1 adult, Economy
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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 November 1, 2025.

This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:59 amDEN - IAD
1 stop11h 30mFrontier
Mon 12/154:00 pmIAD - DEN
1 stop18h 43mFrontier
Deal found 10/29$130
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.
Mon 11/1012:59 amDEN - IAD
1 stop17h 21mFrontier
Mon 11/175:58 pmIAD - DEN
1 stop21h 47mFrontier
Deal found 10/28$132
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:00 amDEN - IAD
2 stops23h 38mFrontier
Wed 1/75:37 pmIAD - DEN
1 stop20h 44mFrontier
Deal found 10/29$133
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:59 amDEN - IAD
1 stop17h 21mFrontier
Thu 12/45:45 amIAD - DEN
1 stop29h 17mFrontier
Deal found 10/29$134
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:38 amDEN - DCA
Nonstop3h 21mFrontier
Sun 12/146:00 pmDCA - DEN
Nonstop4h 12mFrontier
Deal found 10/29$136
This Frontier deal was found by Cheapflights users on 10/30. 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.
Tue 12/212:59 amDEN - IAD
1 stop11h 30mFrontier
Fri 12/129:26 amIAD - DEN
1 stop8h 17mFrontier
Deal found 10/30$137
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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.
Wed 12/311:38 amDEN - DCA
Nonstop3h 21mFrontier
Thu 12/42:00 pmDCA - DEN
Nonstop4h 15mFrontier
Deal found 10/30$137
This Booking.com deal was found by Cheapflights users on 10/30. 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.
Fri 11/1412:16 amDEN - IAD
1 stop17h 35mFrontier
Tue 11/188:40 amIAD - DEN
1 stop7h 05mFrontier
Deal found 10/30$138
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:35 amDEN - DCA
Nonstop3h 27mFrontier
Sat 11/158:15 amDCA - DEN
Nonstop4h 05mFrontier
Deal found 10/29$140
This Priceline deal was found by Cheapflights users on 10/30. 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.
Fri 12/51:42 pmDEN - IAD
1 stop7h 23mFrontier
Fri 12/129:26 amIAD - DEN
1 stop8h 17mFrontier
Deal found 10/30$141
This Frontier deal was found by Cheapflights users on 10/30. 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 12/311:38 amDEN - DCA
Nonstop3h 21mFrontier
Thu 12/116:00 pmDCA - DEN
Nonstop4h 12mFrontier
Deal found 10/30$142
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/27:40 amDEN - DCA
Nonstop3h 26mFrontier
Sat 12/66:00 pmDCA - DEN
Nonstop4h 12mFrontier
Deal found 10/30$143

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 November 1, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$71
(CheapOair)

Popular in

December

Cheapest in

August

Average price

$295

Good round-trip deal

$150 or less

Good one-way deal

$89 or less
Provider with most accurate pricing for Denver Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. (WAS) flights.
Search Deals
From Colorado to District of Columbia
Search Deals
One-way flight from Colorado to District of Columbia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Colorado to District of Columbia.
Search Deals
Price to beat on a one-way flight from Colorado to District of Columbia.
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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 November 1, 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 - DCA

DENDCA

Denver Intl

Fri 12/5

11:50 am-10:58 pm

1 stop9h 08m

Washington, D.C. Reagan-National

Tue 12/9

6:00 am-11:05 am

1 stop7h 05m

$185

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 12/6

5:05 pm-10:15 pm

Nonstop3h 10m

Washington, D.C. Dulles Intl

Sun 12/7

7:50 pm-9:40 pm

Nonstop3h 50m

$197

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 2/14

6:00 am-11:20 am

Nonstop3h 20m

Washington, D.C. Dulles Intl

Sun 2/15

10:25 pm-12:30 am

Nonstop4h 05m

$197

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 11/13

11:51 am-10:59 pm

1 stop9h 08m

Washington, D.C. Reagan-National

Sun 11/16

6:24 am-11:05 am

1 stop6h 41m

$201

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 12/9

11:50 am-10:59 pm

1 stop9h 09m

Washington, D.C. Reagan-National

Thu 12/11

6:00 am-11:05 am

1 stop7h 05m

$207

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Mon 12/8

12:50 am-9:11 am

1 stop6h 21m

Washington, D.C. Dulles Intl

Wed 12/10

11:58 am-3:39 pm

1 stop5h 41m

$217

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Mon 12/8

12:50 am-9:10 am

1 stop6h 20m

Washington, D.C. Reagan-National

Wed 12/10

6:29 am-10:07 am

1 stop5h 38m

$217

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sun 12/7

11:59 pm-10:05 am

1 stop8h 06m

Washington, D.C. Reagan-National

Wed 12/10

6:00 am-11:05 am

1 stop7h 05m

$221

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sun 2/8

1:16 pm-10:54 pm

1 stop7h 38m

Washington, D.C. Dulles Intl

Tue 2/17

6:10 am-10:20 am

1 stop6h 10m

$227

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 1/20

12:30 am-9:12 am

1 stop6h 42m

Washington, D.C. Reagan-National

Fri 1/23

7:30 pm-12:28 am

1 stop6h 58m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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, February is the cheapest month in which you can book a flight from Colorado to District of Columbia (average of $80). Flying from Colorado to District of Columbia in May is currently the most expensive (average of $134). 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 November 1, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 21% on flights from Colorado to District of Columbia by exploring options for tickets in the evening.

What is the cheapest day to fly from Colorado to District of Columbia?

Use this chart to determine the cheapest time to fly round-trip from Colorado to District of Columbia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Colorado to District of Columbia flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 1, 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
4,245 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

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
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

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
7.9
Good
7,996 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

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
8,995 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

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
11,031 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

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
3,124 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

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?

    JetBlue, Southwest, and United Airlines can get you from Colorado to District of Columbia in just under 3h 10m. Your travel time can differ by up to 5h 58m. 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?

    $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 United Airlines and Southwest, with prices starting from $89 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, February is the cheapest month in which you can book a flight from Colorado to District of Columbia (average of $80). Flying from Colorado to District of Columbia in May is currently the most expensive (average of $134). 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

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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 November 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$235FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$334FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$177Average$430FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$179Average$502FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$186Average$433FlexibilityNo cancel feeOn-time71%

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