Popular airlines from Washington to Denver, CO (DEN-Denver Intl.)

Frontier Airlines
Frontier Airlines
Southwest Airlines
Southwest Airlines
American Airlines
American Airlines
JetBlue Airways
JetBlue Airways
Delta
Delta
United
United
Alaska Airlines
Alaska Airlines

Today's featured flight deals from Washington to Denver, CO (DEN-Denver Intl.)

Nonstop

Carry-on included

Lower price than typical

Washington (DCA) to Denver (DEN).
Departing on Thu, Aug 28 at 7:00am from Washington, arriving at 8:56am in Denver.
Returning on Sun, Aug 31 at 6:45am from Denver, arriving at 12:11pm in Washington.
Frontier Airlines, nonstop.
45% less than typical

$242

Select Frontier Airlines flight departing on Thu, Aug 28 at 7:00am from Washington, returning on Sun, Aug 31 at 6:45am from Denver priced at $242
Washington (DCA) to Denver (DEN).
Departing on Wed, Aug 27 at 7:00am from Washington, arriving at 8:56am in Denver.
Returning on Sat, Aug 30 at 11:27am from Denver, arriving at 4:59pm in Washington.
Frontier Airlines, nonstop.
45% less than typical

$229

Select Frontier Airlines flight departing on Wed, Aug 27 at 7:00am from Washington, returning on Sat, Aug 30 at 11:27am from Denver priced at $229
Washington (IAD) to Denver (DEN).
Departing on Wed, Sep 17 at 5:45am from Washington, arriving at 7:20am in Denver.
Returning on Sun, Sep 21 at 11:59pm from Denver, arriving on Mon, Sep 22 at 10:07am in Washington.
Southwest Airlines, nonstop.
45% less than typical

$218

Select Southwest Airlines flight departing on Wed, Sep 17 at 5:45am from Washington, returning on Sun, Sep 21 at 11:59pm from Denver priced at $218

Baltimore (BWI) to Denver (DEN).
Departing on Sun, Aug 31 at 6:42pm from Baltimore, arriving at 8:45pm in Denver.
Returning on Thu, Sep 4 at 8:11am from Denver, arriving at 5:53pm in Baltimore.
Frontier Airlines, nonstop.
35% less than typical

$284

Select Frontier Airlines flight departing on Sun, Aug 31 at 6:42pm from Baltimore, returning on Thu, Sep 4 at 8:11am from Denver priced at $284
Washington (IAD) to Denver (DEN).
Departing on Tue, Sep 16 at 5:45am from Washington, arriving at 7:20am in Denver.
Returning on Sun, Sep 21 at 11:59pm from Denver, arriving on Mon, Sep 22 at 10:07am in Washington.
Southwest Airlines, nonstop.
40% less than typical

$218

Select Southwest Airlines flight departing on Tue, Sep 16 at 5:45am from Washington, returning on Sun, Sep 21 at 11:59pm from Denver priced at $218
Baltimore (BWI) to Denver (DEN).
Departing on Sun, Sep 21 at 9:15pm from Baltimore, arriving at 11:10pm in Denver.
Returning on Thu, Sep 25 at 11:59pm from Denver, arriving on Fri, Sep 26 at 10:13am in Baltimore.
Southwest Airlines, nonstop.
40% less than typical

$227

Select Southwest Airlines flight departing on Sun, Sep 21 at 9:15pm from Baltimore, returning on Thu, Sep 25 at 11:59pm from Denver priced at $227
Baltimore (BWI) to Denver (DEN).
Departing on Thu, Oct 2 at 9:00pm from Baltimore, arriving at 11:00pm in Denver.
Returning on Sun, Oct 5 at 11:59pm from Denver, arriving on Mon, Oct 6 at 10:00am in Baltimore.
Southwest Airlines, nonstop.
35% less than typical

$247

Select Southwest Airlines flight departing on Thu, Oct 2 at 9:00pm from Baltimore, returning on Sun, Oct 5 at 11:59pm from Denver priced at $247
Baltimore (BWI) to Denver (DEN).
Departing on Thu, Oct 2 at 6:05am from Baltimore, arriving at 8:05am in Denver.
Returning on Sun, Oct 5 at 11:59pm from Denver, arriving on Mon, Oct 6 at 10:00am in Baltimore.
Southwest Airlines, nonstop.
35% less than typical

$247

Select Southwest Airlines flight departing on Thu, Oct 2 at 6:05am from Baltimore, returning on Sun, Oct 5 at 11:59pm from Denver priced at $247
Washington (DCA) to Denver (DEN).
Departing on Fri, Aug 29 at 1:00pm from Washington, arriving at 2:59pm in Denver.
Returning on Fri, Sep 5 at 4:30pm from Denver, arriving at 9:59pm in Washington.
Frontier Airlines, nonstop.
35% less than typical

$262

Select Frontier Airlines flight departing on Fri, Aug 29 at 1:00pm from Washington, returning on Fri, Sep 5 at 4:30pm from Denver priced at $262

Cheap Flights from Washington to Denver (WAS-DEN)

Prices were available within the past 7 days and start at $46 for one-way flights and $94 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

Thu, Sep 4 - Tue, Sep 9

DCA

Washington

DEN

Denver

$94

Roundtrip

just found

Thu, Sep 11 - Tue, Sep 16

DCA

Washington

DEN

Denver

$95

Roundtrip

found 14 hours ago

Mon, Sep 8 - Mon, Sep 15

BWI

Baltimore

DEN

Denver

$96

Roundtrip

just found

Wed, Nov 12 - Fri, Nov 14

DCA

Washington

DEN

Denver

$100

Roundtrip

found 4 hours ago

Sat, Sep 6 - Sat, Sep 13

DCA

Washington

DEN

Denver

$101

Roundtrip

just found

Sat, Sep 20 - Mon, Sep 22

DCA

Washington

DEN

Denver

$102

Roundtrip

found 1 hour ago

Sat, Nov 15 - Wed, Nov 19

IAD

Washington

DEN

Denver

$177

Roundtrip

just found

Tue, Nov 11 - Sat, Nov 15

DCA

Washington

DEN

Denver

$177

Roundtrip

just found

Thu, Dec 4 - Tue, Dec 9

DCA

Washington

DEN

Denver

$208

Roundtrip

just found

Mon, Nov 17 - Tue, Nov 18

DCA

Washington

DEN

Denver

$231

Roundtrip

found 6 hours ago

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

February is typically the cheapest month to fly

From $78 - $406 per traveler.

Alternative airports near Denver

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

DEN

Denver Intl.

Cheapest

32 min

Flights from $101

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, Sun Country Airlines, United
Roundtrip price	$85
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 September. 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 $46 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.

Unlock instant savings with Member Prices

$46 Cheap Flights from Washington (WAS) to Denver (DEN)

Travelers

Popular airlines from Washington to Denver, CO (DEN-Denver Intl.)

Today's featured flight deals from Washington to Denver, CO (DEN-Denver Intl.)

Cheap Flights from Washington to Denver (WAS-DEN)

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

February is typically the cheapest month to fly

Alternative airports near Denver

Washington to Denver Flights

Explore a world of travel with Expedia

Lodging

Flights

Packages

Cars

Vacation Rentals

Other

$46 Cheap Flights from Washington (WAS) to Denver (DEN)

Popular airlines from Washington to Denver, CO (DEN-Denver Intl.)

Today's featured flight deals from Washington to Denver, CO (DEN-Denver Intl.)

Cheap Flights from Washington to Denver (WAS-DEN)

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

February is typically the cheapest month to flyFebruary is typically the cheapest month to fly

Graph displaying average flight prices per month

Alternative airports near Denver

Washington to Denver Flights

Explore a world of travel with Expedia

Lodging

Flights

Packages

Cars

Vacation Rentals

Other

February is typically the cheapest month to fly