$75 Cheap Flights from Washington (DCA) to Denver (DEN)

View $75 flight on Sat, May 10, 2025Opens in a new window

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

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Denver (DCA-DEN)

Prices were available within the past 7 days and start at $75 for one-way flights and $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 3 - Sat, May 10
DCA
Washington
DEN
Denver
$150 Roundtrip, just found
$150
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 3 from Washington to Denver, returning Sat, May 10, priced at $150 just found
Frontier Airlines
Sat, May 10 - Tue, May 20
DCA
Washington
DEN
Denver
$159 Roundtrip, just found
$159
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 10 from Washington to Denver, returning Tue, May 20, priced at $159 just found
Frontier Airlines
Wed, May 28 - Sat, May 31
DCA
Washington
DEN
Denver
$168 Roundtrip, just found
$168
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, May 28 from Washington to Denver, returning Sat, May 31, priced at $168 just found
Frontier Airlines
Tue, May 6 - Fri, May 16
DCA
Washington
DEN
Denver
$169 Roundtrip, just found
$169
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, May 6 from Washington to Denver, returning Fri, May 16, priced at $169 just found
Frontier Airlines
Sun, May 25 - Wed, Jun 4
DCA
Washington
DEN
Denver
$178 Roundtrip, just found
$178
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 25 from Washington to Denver, returning Wed, Jun 4, priced at $178 just found
Frontier Airlines
Sat, May 3 - Wed, May 7
DCA
Washington
DEN
Denver
$180 Roundtrip, found 1 hour ago
$180
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, May 3 from Washington to Denver, returning Wed, May 7, priced at $180 found 1 hour ago
United
Tue, Jun 3 - Sat, Jun 7
DCA
Washington
DEN
Denver
$203 Roundtrip, found 1 hour ago
$203
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Jun 3 from Washington to Denver, returning Sat, Jun 7, priced at $203 found 1 hour ago
JetBlue Airways
Fri, May 9 - Sat, May 10
DCA
Washington
DEN
Denver
$204 Roundtrip, found 1 hour ago
$204
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Fri, May 9 from Washington to Denver, returning Sat, May 10, priced at $204 found 1 hour ago
Delta
Tue, Jun 17 - Wed, Jun 18
DCA
Washington
DEN
Denver
$231 Roundtrip, found 11 hours ago
$231
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Jun 17 from Washington to Denver, returning Wed, Jun 18, priced at $231 found 11 hours ago
American Airlines
Wed, Jul 23 - Sat, Aug 2
DCA
Washington
DEN
Denver
$237 Roundtrip, just found
$237
Roundtrip
just found
Select American Airlines flight, departing Wed, Jul 23 from Washington to Denver, returning Sat, Aug 2, priced at $237 just found
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
$144
Distance
1471 mi

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 May. 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 $75 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?
Cheap return fares from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN) start at $183. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United and Frontier Airlines flight leaving DCA on May 13 2025 and touching down at DEN. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from DCA to DEN?
The cheapest flights from DCA to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
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 DCA to DEN?
With tickets starting at $109 for a one-way flight from DCA to DEN, United is currently the cheapest airline on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from DCA on July 15 2025. Prices were last updated on April 23 2025 and have not changed since.
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.

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*Available to One Key members.