$38 Cheap Flights from Washington (DCA) to Denver (DEN)

View $38 flight on Tue, Feb 24, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Washington to Denver (DCA-DEN)

Prices were available within the past 7 days and start at $38 for one-way flights and $73 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Jan 10 - Sun, Jan 18
DCA
Washington
DEN
Denver
$73 Roundtrip, just found
$73
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jan 10 from Washington to Denver, returning Sun, Jan 18, priced at $73 just found
Frontier Airlines
Tue, Jan 6 - Wed, Jan 14
DCA
Washington
DEN
Denver
$76 Roundtrip, just found
$76
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jan 6 from Washington to Denver, returning Wed, Jan 14, priced at $76 just found
Frontier Airlines
Tue, Dec 16 - Fri, Jan 9
DCA
Washington
DEN
Denver
$77 Roundtrip, found 1 hour ago
$77
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Dec 16 from Washington to Denver, returning Fri, Jan 9, priced at $77 found 1 hour ago
Frontier Airlines
Tue, Feb 24 - Sat, Feb 28
DCA
Washington
DEN
Denver
$78 Roundtrip, found 4 days ago
$78
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Tue, Feb 24 from Washington to Denver, returning Sat, Feb 28, priced at $78 found 4 days ago
Frontier Airlines
Tue, Feb 17 - Tue, Feb 24
DCA
Washington
DEN
Denver
$80 Roundtrip, just found
$80
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Feb 17 from Washington to Denver, returning Tue, Feb 24, priced at $80 just found
Frontier Airlines
Tue, Feb 17 - Sun, Feb 22
DCA
Washington
DEN
Denver
$81 Roundtrip, found 4 hours ago
$81
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Feb 17 from Washington to Denver, returning Sun, Feb 22, priced at $81 found 4 hours ago
United
Tue, Jan 27 - Sat, Jan 31
DCA
Washington
DEN
Denver
$177 Roundtrip, found 1 hour ago
$177
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Jan 27 from Washington to Denver, returning Sat, Jan 31, priced at $177 found 1 hour ago
American Airlines
Tue, Jan 27 - Sat, Jan 31
DCA
Washington
DEN
Denver
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, Jan 27 from Washington to Denver, returning Sat, Jan 31, priced at $197 found 1 hour ago
Delta
Tue, Feb 17 - Wed, Feb 18
DCA
Washington
DEN
Denver
$211 Roundtrip, found 12 hours ago
$211
Roundtrip
found 12 hours ago
Select Delta flight, departing Tue, Feb 17 from Washington to Denver, returning Wed, Feb 18, priced at $211 found 12 hours ago
Alaska Airlines
Sat, Jan 17 - Tue, Jan 20
DCA
Washington
DEN
Denver
$224 Roundtrip, just found
$224
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Jan 17 from Washington to Denver, returning Tue, Jan 20, priced at $224 just found

Black Friday Sale

Limited-time deals: Save up to 50% on select hotels.
Book now

Find the cheapest month to fly from Washington (DCA) to Denver (DEN)

January is typically the cheapest month to fly

From $72 - $212 per traveler.

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $124
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $124
Flights from Washington (DCA) to Denver (DEN)
Origin airport
Ronald Reagan Washington National
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$73
Distance
1471 mi
Average flight time
2 hours 52 mins

Washington to Denver Flights

The cheapest times to fly from Washington to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Denver are during the month of January. You can find some of the cheapest flights from Washington to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Denver

Sunday is one of the best days to book for cheap flights from Washington to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $38 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN) cost?
Secure a cheap one-way flight from $38 or cheap return flight from $73 from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
January is the most affordable month to fly from DCA to DEN. Traveling during an off-peak travel window is often the key to scoring lower fares.
Which airlines fly direct from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
When departing from Ronald Reagan Washington National Airport (DCA), you can hop on a nonstop flight to Denver Intl. Airport (DEN) with Frontier Airlines.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
While prices may vary depending on your travel dates, United Airlines and Frontier Airlines are go-to choices for flights between Ronald Reagan Washington National Airport (DCA) and Denver Intl. Airport (DEN). You can also compare carriers on Expedia and use the "Sort by" filter to find the cheapest ticket for your DCA to DEN flight.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Every day, an average of 4 nonstop flights operate from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN). Choose the departure time that best fits your schedule.
What are the most popular departure times for flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
The 4 PM departures from DCA to DEN are typically the busiest. They can also be more expensive. If you want to save money, pick a less crowded time to fly.
What day of the week has the most flights from DCA to DEN?
If you depart on a Friday, you'll get the widest range of options for flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN).
What is the earliest flight from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Ronald Reagan Washington National Airport (DCA)'s earliest flight to Denver Intl. Airport (DEN) is at approximately 7:00AM UTC-5. With a total journey time of 4h 12m, you'll arrive at around 9:12AM UTC-7.
How long does it take to fly from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Flights from DCA to DEN have an average travel time of 4 hours and 12 minutes. The distance between the two airports is 1,450 mi.
What airline has the least delays from DCA to DEN?
United Airlines has the best track record for on-time direct flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN), with an on-time rating of 81%. Use the Expedia App to check your flight schedule before you take off and receive notifications about any changes.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Select a flight from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from Ronald Reagan Washington National Airport (DCA)?
If you've booked a direct flight from Ronald Reagan Washington National Airport (DCA) to Denver, Denver Intl. Airport (DEN) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN) last-minute?
Last-minute fares from DCA to DEN are typically more expensive. To secure the lowest rates, start searching for flights well ahead of time. That said, if your travel plans are flexible, you may land a cheap ticket just before your departure.
Is it cheaper to book a DCA to DEN flight and hotel package?
You'll typically save money by booking a DCA to DEN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your preferred accommodations and flights, consider other add-ons like activities, car rentals and tours.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
If you reserved your DCA to DEN flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

Explore a world of travel with Expedia

*Available to One Key members.