HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Reagan-National

$151+ Cheap flights from Colorado to Reagan-National (DCA)

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DCA
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to Reagan-National with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Colorado to Reagan-National

Cheapest flights from Colorado to Reagan-National
Explore the most affordable flight options available from Colorado to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.

This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:25 am
DEN
-
DCA
Nonstop3h 24m
Frontier
Wed 11/117:00 am
DCA
-
DEN
Nonstop4h 04m
Frontier
Deal found 7/28$237
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:30 am
DEN
-
DCA
Nonstop3h 21m
Frontier
Fri 9/41:59 pm
DCA
-
DEN
Nonstop3h 54m
Frontier
Deal found 7/28$238
This Expedia deal was found by Cheapflights users on 7/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:54 am
DEN
-
DCA
1 stop7h 11m
Multiple Airlines
Thu 8/276:00 pm
DCA
-
DEN
Nonstop4h 07m
Multiple Airlines
Deal found 7/27$240
This JetBlue deal was found by Cheapflights users on 7/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2211:59 pm
DEN
-
DCA
1 stop10h 11m
JetBlue
Tue 12/12:50 pm
DCA
-
DEN
1 stop9h 37m
JetBlue
Deal found 7/27$242
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:54 am
DEN
-
DCA
1 stop9h 56m
Multiple Airlines
Tue 8/187:00 am
DCA
-
DEN
Nonstop4h 01m
Multiple Airlines
Deal found 7/28$244
This CheapOair deal was found by Cheapflights users on 7/26. 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.
Sat 9/511:37 pm
DEN
-
DCA
1 stop8h 33m
Multiple Airlines
Mon 9/76:00 pm
DCA
-
DEN
Nonstop4h 07m
Multiple Airlines
Deal found 7/26$245
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/187:25 am
DEN
-
DCA
Nonstop3h 24m
Frontier
Sun 9/207:00 am
DCA
-
DEN
Nonstop4h 03m
Frontier
Deal found 7/26$246
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:54 am
DEN
-
DCA
1 stop7h 11m
JetBlue
Mon 8/312:25 pm
DCA
-
DEN
1 stop10h 17m
JetBlue
Deal found 7/27$247
This Expedia deal was found by Cheapflights users on 7/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:37 pm
DEN
-
DCA
1 stop6h 21m
Multiple Airlines
Thu 8/207:00 am
DCA
-
DEN
Nonstop4h 01m
Multiple Airlines
Deal found 7/27$248
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 8/124:28 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Sat 8/156:00 pm
DCA
-
DEN
Nonstop4h 07m
Frontier
Deal found 7/26$256
This JetBlue deal was found by Cheapflights users on 7/25. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:37 pm
DEN
-
DCA
1 stop10h 24m
JetBlue
Sat 9/54:40 pm
DCA
-
DEN
1 stop8h 02m
JetBlue
Deal found 7/25$257
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:40 am
COS
-
DCA
1 stop6h 24m
United Airlines
Tue 9/86:30 am
DCA
-
COS
1 stop6h 17m
United Airlines
Deal found 7/27$355

Find flight deals from Colorado to Reagan-National

Keep the following information in mind while searching for Colorado to Reagan-National flight deals. Data was last updated July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Trip.com)

One-way from

$151
(Cheapflightsfares)

Popular in

June

Cheapest in

January

Average price

$422

Good round-trip deal

$294 or less

Good one-way deal

$212 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 Washington, D.C. Reagan-National
Search Deals
One-way flight from Colorado to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Colorado to Washington, D.C. Reagan-National.
Search Deals
Price to beat on a one-way flight from Colorado to Washington, D.C. Reagan-National.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Reagan-National 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 July 29, 2026.
Use the filters below to find and compare flights from Colorado to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 9/26

7:15 am-2:05 pm

1 stop4h 50m

Washington, D.C. Reagan-National

Tue 9/29

4:50 pm-7:50 pm

1 stop5h 00m

$324

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 9/26

7:15 am-2:05 pm

1 stop4h 50m

Washington, D.C. Reagan-National

Wed 9/30

4:50 pm-7:50 pm

1 stop5h 00m

$324

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 9/8

8:35 am-4:10 pm

1 stop5h 35m

Washington, D.C. Reagan-National

Tue 9/15

4:50 pm-7:50 pm

1 stop5h 00m

$328

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 8/22

7:15 am-2:05 pm

1 stop4h 50m

Washington, D.C. Reagan-National

Mon 8/24

4:20 pm-7:40 pm

1 stop5h 20m

$328

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 9/19

7:15 am-2:05 pm

1 stop4h 50m

Washington, D.C. Reagan-National

Mon 9/21

4:55 pm-7:55 pm

1 stop5h 00m

$328

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 8/20

3:10 pm-10:30 pm

1 stop5h 20m

Washington, D.C. Reagan-National

Mon 8/24

5:20 pm-10:20 pm

1 stop7h 00m

$333

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 8/21

3:15 pm-11:55 pm

2 stops6h 40m

Washington, D.C. Reagan-National

Sat 8/22

9:25 am-1:05 pm

1 stop5h 40m

$337

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 9/18

12:55 am-8:35 am

1 stop5h 40m

Washington, D.C. Reagan-National

Sat 9/26

6:10 am-9:48 am

1 stop5h 38m

$339

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 8/28

8:05 am-3:50 pm

1 stop5h 45m

Washington, D.C. Reagan-National

Fri 9/4

4:35 pm-9:15 pm

1 stop6h 40m

$339

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 8/21

3:15 pm-11:55 pm

2 stops6h 40m

Washington, D.C. Reagan-National

Mon 8/24

3:30 pm-7:20 pm

1 stop5h 50m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Colorado to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National 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 Washington, D.C. Reagan-National Airport

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

Currently, February is the cheapest month in which you can book a flight from Colorado to Washington, D.C. Reagan-National Airport (average of $204). Flying from Colorado to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $476). 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 DCA?

Find hourly flight availability from Colorado to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2026.

When flying from Colorado to Washington, D.C. Reagan-National Airport, 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 Colorado to Washington, D.C. Reagan-National Airport

Explore weekly flight availability from Colorado to Reagan-National. 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 July 29, 2026.

The most flights from USCO to DCA are scheduled on a Monday (10 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).

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

Airfare is typical for this route at the moment.
Colorado to Washington, D.C. Reagan-National Airport flights typically cost between $185 and $375 in November.
The cheapest round-trip price found within the last 5 days was $237 on Frontier (Nov 4-Nov 11).

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

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Colorado to Washington, D.C. Reagan-National Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Reagan-National. 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 Washington, D.C. Reagan-National Airport?

    Departing from Colorado to Washington, D.C. Reagan-National Airport will take you 4h 50m. The distance between Colorado and Washington, D.C. Reagan-National Airport is about 1471 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $59. Users have also found prices from $98 and $137 on American Airlines and JetBlue, respectively.

  • What are the most popular routes from Colorado to Washington, D.C. Reagan-National Airport?

    Most travelers choose Denver Intl - Washington, D.C. Reagan-National, Colorado Springs - Washington, D.C. Reagan-National or Durango La Plata County - Washington, D.C. Reagan-National when deciding on the best route from Colorado to Washington, D.C. Reagan-National Airport.

  • What are the most reliable airlines from Colorado to Washington, D.C. Reagan-National Airport?

    Consider Air Canada (90%), United Airlines (90%) or Frontier (75%) when booking your flight. These represent the most reliable airlines when flying from Colorado to Washington, D.C. Reagan-National Airport.

  • What are the cheapest flights from Colorado to Washington, D.C. Reagan-National Airport?

    The cheapest flight price from Colorado to Washington, D.C. Reagan-National Airport is $126. On average you can expect to pay $503. The most popular route, (Denver Intl - Washington, D.C. Reagan-National), can usually be booked for $216.

  • Can I find deals for flights from Colorado to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Colorado to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Reagan-National?

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

  • Can I find deals for business class flights from Colorado to Reagan-National?

    Yes. Cheapflights offers flight deals from Colorado to Reagan-National 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 Washington, D.C. Reagan-National Airport?

    Currently, February is the cheapest month in which you can book a flight from Colorado to Washington, D.C. Reagan-National Airport (average of $204). Flying from Colorado to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $476). 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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Owings Mills
Arlington
Tysons
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Clinton
Hunt Valley
Cordova
Woodbridge
Largo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Dulles Intl flights
Dallas/Fort Worth to Baltimore flights
Dallas/Fort Worth to Reagan-National flights
Seattle to Dulles Intl flights
Los Angeles to Reagan-National flights
O'Hare Intl to Baltimore flights
Los Angeles to Baltimore flights
Seattle to Reagan-National flights
Atlanta to Dulles Intl flights
Hobby to Baltimore flights
San Francisco to Reagan-National flights
San Francisco to Dulles Intl flights
Orlando to Dulles Intl flights
San Francisco to Baltimore flights
Atlanta to Baltimore flights
Los Angeles to Dulles Intl flights
Atlanta to Reagan-National flights
Orlando to Baltimore flights
Boston to Reagan-National flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Dulles Intl flights
Boston to Baltimore flights
George Bush Intcntl to Baltimore flights
Boston to Dulles Intl flights
John F Kennedy Intl to Dulles Intl flights
Tampa to Baltimore flights
Tampa to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Seattle to Baltimore flights
Miami to Reagan-National flights
Hobby to Reagan-National flights
Minneapolis to Reagan-National flights
Denver to Dulles Intl flights
Orlando to Reagan-National flights
Midway to Dulles Intl flights
Minneapolis to Dulles Intl flights
Denver to Baltimore flights
Charlotte to Baltimore flights
Tampa to Reagan-National flights
Hobby to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Ontario to Dulles Intl flights
Austin to Dulles Intl flights
Minneapolis to Baltimore flights
Denver to Reagan-National flights
Fort Lauderdale to Dulles Intl flights
Detroit to Reagan-National flights
Sky Harbor Intl to Dulles Intl flights
Detroit to Baltimore flights

Top 5 airlines flying from Colorado to Reagan-National

Discover the top 5 airlines that operate flights from Colorado to Reagan-National. 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 July 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$291FlexibilityNo cancel feeOn-time62%
DeltaCheapest$143Average$467FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$186Average$505FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$197Average$583FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$237Average$452FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.