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Denver

$134+ Cheap flights from District of Columbia to Denver (DEN)

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DEN
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap flight deals from District of Columbia to Denver

Cheapest flights from District of Columbia to Denver
Explore the most affordable flight options available from District of Columbia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sat 8/297:24 pm
IAD
-
DEN
2 stops10h 24m
Frontier
Sat 9/510:43 am
DEN
-
IAD
1 stop10h 09m
Frontier
Deal found 7/30$267
This Trip.com deal was found by Cheapflights users on 7/30. 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.
Fri 8/141:59 pm
DCA
-
DEN
Nonstop3h 54m
Frontier
Sat 8/2211:25 am
DEN
-
DCA
Nonstop3h 34m
Frontier
Deal found 7/30$268
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 9/412:28 pm
IAD
-
DEN
1 stop12h 39m
Frontier
Tue 9/810:04 am
DEN
-
IAD
2 stops10h 48m
Frontier
Deal found 7/30$269
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 8/197:00 am
DCA
-
DEN
Nonstop4h 01m
Frontier
Thu 8/204:28 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Deal found 7/30$269
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 10/49:04 pm
IAD
-
DEN
1 stop13h 00m
Frontier
Thu 10/811:59 pm
DEN
-
IAD
2 stops15h 37m
Frontier
Deal found 7/30$270
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sat 8/159:57 pm
IAD
-
DEN
1 stop10h 33m
Frontier
Thu 8/2010:36 am
DEN
-
IAD
2 stops52h 38m
Frontier
Deal found 7/29$271
This FlightHub deal was found by Cheapflights users on 7/29. 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.
Thu 9/31:59 pm
DCA
-
DEN
Nonstop3h 54m
Frontier
Wed 9/94:28 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Deal found 7/29$271
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 9/259:04 pm
IAD
-
DEN
2 stops17h 06m
Frontier
Sun 9/276:38 pm
DEN
-
IAD
1 stop9h 42m
Frontier
Deal found 7/30$272
This FlightHub deal was found by Cheapflights users on 7/29. 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.
Sun 8/167:00 am
DCA
-
DEN
Nonstop4h 01m
Frontier
Fri 8/217:30 am
DEN
-
DCA
Nonstop3h 21m
Frontier
Deal found 7/29$272
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Thu 10/229:16 pm
IAD
-
DEN
1 stop14h 15m
Frontier
Mon 10/2611:59 pm
DEN
-
IAD
2 stops15h 37m
Frontier
Deal found 7/31$273
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
Thu 9/31:59 pm
DCA
-
DEN
Nonstop3h 54m
Frontier
Sun 9/611:25 am
DEN
-
DCA
Nonstop3h 34m
Frontier
Deal found 7/29$273
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 9/179:04 pm
IAD
-
DEN
1 stop13h 00m
Frontier
Mon 9/2111:21 am
DEN
-
IAD
2 stops10h 49m
Frontier
Deal found 7/30$274

Find flight deals from District of Columbia to Denver

Keep the following information in mind while searching for District of Columbia to Denver flight deals. Data was last updated August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$267
(Kiwi.com)

One-way from

$134
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$342

Good round-trip deal

$292 or less

Good one-way deal

$165 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Denver Intl flights.
Search Deals
From District of Columbia to Denver Intl
Search Deals
One-way flight from District of Columbia to Denver Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from District of Columbia to Denver Intl.
Search Deals
Price to beat on a one-way flight from District of Columbia to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia to Denver 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 August 1, 2026.
Use the filters below to find and compare flights from District of Columbia to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 10/27

4:10 pm-6:17 pm

Nonstop4h 07m

Denver Intl

Sun 11/1

11:59 pm-5:19 am

Nonstop3h 20m

$319
Quickest round-trip

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 10/21

12:40 pm-2:29 pm

Nonstop3h 49m

Denver Intl

Sat 10/24

5:56 pm-11:25 pm

Nonstop3h 29m

$319

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 10/2

6:35 am-8:28 am

Nonstop3h 53m

Denver Intl

Mon 10/5

5:56 pm-11:25 pm

Nonstop3h 29m

$319

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Mon 8/17

4:20 pm-7:40 pm

1 stop5h 20m

Denver Intl

Thu 8/20

7:00 am-4:10 pm

1 stop7h 10m

$333

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 10/27

6:05 am-11:25 am

2 stops7h 20m

Denver Intl

Tue 10/27

3:15 pm-10:55 pm

1 stop5h 40m

$334

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Mon 9/14

6:40 pm-9:50 pm

1 stop5h 10m

Denver Intl

Tue 9/15

1:55 pm-11:05 pm

2 stops7h 10m

$338

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 9/10

12:55 pm-5:55 pm

1 stop7h 00m

Denver Intl

Tue 9/15

1:55 pm-11:05 pm

2 stops7h 10m

$338

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 10/17

10:50 am-5:20 pm

1 stop8h 30m

Denver Intl

Sat 10/24

8:45 am-8:50 pm

2 stops10h 05m

$338

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 9/9

9:35 am-3:00 pm

2 stops7h 25m

Denver Intl

Wed 9/16

2:50 pm-9:40 pm

1 stop4h 50m

$338

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Fri 8/21

5:00 pm-10:44 pm

1 stop7h 44m

Denver Intl

Sun 9/6

6:00 am-2:53 pm

1 stop6h 53m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 48 resultsSorted by cheapest first
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Best time to book a flight from District of Columbia to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from District of Columbia 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 District of Columbia to Denver

What is the cheapest month to book a flight from District of Columbia to Denver?

Currently, January is the cheapest month in which you can book a flight from District of Columbia to Denver (average of $253). Flying from District of Columbia to Denver in June is currently the most expensive (average of $453). 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 DC to DEN?

Find hourly flight availability from District of Columbia to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2026.

When flying from District of Columbia to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 8% versus a flight in the evening.

Weekly flight availability from District of Columbia to Denver

Explore weekly flight availability from District of Columbia to Denver. 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 August 1, 2026.

The most flights from USDC to DEN are scheduled on a Thursday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (18 on average).

How much does it cost to fly round-trip from District of Columbia to Denver?

Airfare is below average for this route at the moment.
District of Columbia to Denver flights typically cost between $335 and $518 in August.
The cheapest round-trip price found within the last 5 days was $267 on Frontier (Aug 29-Sep 5).

How far ahead should I book a flight from District of Columbia to Denver?

Booking 34 days in advance of your planned departure date is, on average, the best time to get cheap flights from District of Columbia to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest day to fly from District of Columbia to Denver?

Use this chart to determine the cheapest time to fly round-trip from District of Columbia to Denver. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their District of Columbia to Denver flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Denver from District of Columbia?

    For a flight from District of Columbia to Denver, you will be flying into Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city.

  • How long is the flight from District of Columbia to Denver?

    A quick flight from District of Columbia to Denver can take about 4h 07m. United Airlines provides one of the quickest options available for as low as $319. The distance between District of Columbia and Denver is about 1448 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from District of Columbia to Denver one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $59. However, be on the lookout for offers from JetBlue and Southwest, as they are both options that can get you from District of Columbia to Denver for a low price.

  • What are the most reliable airlines from District of Columbia to Denver?

    Consider Ethiopian Air (89%), United Airlines (86%) or Copa Airlines (82%) when booking your flight. These represent the most reliable airlines when flying from District of Columbia to Denver.

  • What are the cheapest flights from District of Columbia to Denver?

    The cheapest flight price from District of Columbia to Denver is $248. On average you can expect to pay $1,008. The most popular route, (Washington, D.C. Dulles Intl - Denver Intl), can usually be booked for $250.

  • Can I find deals for flights from District of Columbia to Denver that include hotel bookings?

    Yes. In addition to deals on District of Columbia to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Denver.

  • Can I find deals for business class flights from District of Columbia to Denver?

    Yes. Cheapflights offers flight deals from District of Columbia to Denver 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 District of Columbia to Denver?

    Currently, January is the cheapest month in which you can book a flight from District of Columbia to Denver (average of $253). Flying from District of Columbia to Denver in June is currently the most expensive (average of $453). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Westminster
Black Hawk
Centennial
Lakewood
Broomfield
Golden
Lone Tree
Wheat Ridge
Silverthorne
Greeley
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for District of Columbia to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from District of Columbia to Denver

Discover the top 6 airlines that operate flights from District of Columbia to Denver. 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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$270FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$113Average$452FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$177Average$395FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$216Average$390FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$469FlexibilityNo cancel feeOn-time69%
DeltaCheapest$272Average$459FlexibilityNo cancel feeOn-timeN/A

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