฿6,450 Cheap Flights from Washington (DCA) to Denver (DEN)

View ฿6,450 flight on Tue, 7 Jul 2026Opens in a new window

Popular airlines from Ronald Reagan National Airport (DCA) to Denver International Airport (DEN)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ฿6,450 for one-way flights and ฿12,890 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 7 Jul - Wed, 8 Jul
DCA
Washington
DEN
Denver
฿12,890 Return, found 1 day ago
฿12,890
Return
found 1 day ago
Select Delta flight, departing Tue, 7 Jul from Washington to Denver, returning Wed, 8 Jul, priced at ฿12,890 found 1 day ago
Delta
Sat, 4 Jul - Wed, 8 Jul
DCA
Washington
DEN
Denver
฿13,050 Return, found 1 day ago
฿13,050
Return
found 1 day ago
Select Delta flight, departing Sat, 4 Jul from Washington to Denver, returning Wed, 8 Jul, priced at ฿13,050 found 1 day ago
Delta
Tue, 7 Jul - Thu, 9 Jul
DCA
Washington
DEN
Denver
฿14,300 Return, found 1 day ago
฿14,300
Return
found 1 day ago
Select Delta flight, departing Tue, 7 Jul from Washington to Denver, returning Thu, 9 Jul, priced at ฿14,300 found 1 day ago
Delta
Sat, 4 Jul - Thu, 9 Jul
DCA
Washington
DEN
Denver
฿14,465 Return, found 1 day ago
฿14,465
Return
found 1 day ago
Select Delta flight, departing Sat, 4 Jul from Washington to Denver, returning Thu, 9 Jul, priced at ฿14,465 found 1 day ago
Delta
Fri, 3 Jul - Fri, 10 Jul
DCA
Washington
DEN
Denver
฿15,280 Return, found 1 day ago
฿15,280
Return
found 1 day ago
Select Delta flight, departing Fri, 3 Jul from Washington to Denver, returning Fri, 10 Jul, priced at ฿15,280 found 1 day ago
Delta
Mon, 6 Jul - Wed, 8 Jul
DCA
Washington
DEN
Denver
฿15,875 Return, found 1 day ago
฿15,875
Return
found 1 day ago
Select Delta flight, departing Mon, 6 Jul from Washington to Denver, returning Wed, 8 Jul, priced at ฿15,875 found 1 day ago
American Airlines
Mon, 6 Jul - Thu, 9 Jul
DCA
Washington
DEN
Denver
฿17,190 Return, found 1 day ago
฿17,190
Return
found 1 day ago
Select American Airlines flight, departing Mon, 6 Jul from Washington to Denver, returning Thu, 9 Jul, priced at ฿17,190 found 1 day ago
Delta
Mon, 6 Jul - Thu, 9 Jul
DCA
Washington
DEN
Denver
฿17,280 Return, found 1 day ago
฿17,280
Return
found 1 day ago
Select Delta flight, departing Mon, 6 Jul from Washington to Denver, returning Thu, 9 Jul, priced at ฿17,280 found 1 day ago
Delta
Mon, 6 Jul - Thu, 9 Jul
DCA
Washington
DEN
Denver
฿17,470 Return, found 1 day ago
฿17,470
Return
found 1 day ago
Select Delta flight, departing Mon, 6 Jul from Washington to Denver, returning Thu, 9 Jul, priced at ฿17,470 found 1 day ago
United
Mon, 6 Jul - Thu, 9 Jul
DCA
Washington
DEN
Denver
฿20,335 Return, found 1 day ago
฿20,335
Return
found 1 day ago
Select United flight, departing Mon, 6 Jul from Washington to Denver, returning Thu, 9 Jul, priced at ฿20,335 found 1 day ago

Frequently asked questions

How much is a flight from DCA to Denver Intl. Airport (DEN)?
Round-trip flights from National Airport to Denver Intl. Airport (DEN) start from ฿12,890. This is based on fares available within the last 7 days on Expedia for flights departing within the next year — book today to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DCA to DIA airport?
We understand that your situation can change unexpectedly, so we've made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Ronald Reagan Washington National Airport (DCA) to Denver Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for DCA to DIA airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from DCA to Denver Intl. Airport (DEN)?
The flying distance between DCA (DCA) and DIA airport (DEN) is 2,400 kilometres. Squeeze in a nap or make a start on the latest bestseller and the journey will zip by.
Which airlines fly direct from National Airport to Denver Intl. Airport (DEN)?
There are a few airlines that fly straight from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN). Frontier Airlines (F9) is a top choice, offering 91 flights each month. After some more options? Check out the airfares with United Airlines (UA). This carrier offers 30 monthly flights between these destinations.
Are Ronald Reagan Washington National Airport (DCA) to Denver Airport flight tickets cheaper when they're purchased at the last minute?
Flight tickets from National Airport to DIA airport are available up to 12 months prior to departure on Expedia. And although you may occasionally score a great last-minute deal, it's not something you should bank on. Also, booking your flights well in advance means you'll have more options — and you can avoid being wedged in the dreaded middle seat! We're constantly updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Denver Intl.
Airlines serving
American Airlines
Return price
฿12,890
Distance
2355 km
Average flight time
4 hours 9 mins

Book with confidence

Perfect flights from Washington to Denver

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Washington to Denver. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Ronald Reagan Washington National to Denver Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿6,450 and roundtrip prices from ฿12,890. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Denver Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Denver.
Perfect flights from Washington to Denver
*Available to Expedia members.