How long is the flight from Denver to Washington, D.C.?

Southwest and United Airlines can get you from Denver to Washington, D.C. in just under 3h 19m. Your travel time can differ by up to 4h 36m. The distance between Denver and Washington, D.C. is about 1448 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Denver to Washington, D.C. round-trip?

Our cheapest airline available from Denver to Washington, D.C. is Delta. Our recent data shows that you can find tickets from as low as $108 on this airline. Additional options worth looking into are Frontier and American Airlines, starting at $108 and $186 round-trip. Delta is currently priced 68% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Denver to Washington, D.C. one-way?

$70 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $88 and $98, respectively.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Denver to Washington, D.C.?

When deciding which route to take from Denver to Washington, D.C. consider Denver Intl - Washington, D.C. Dulles Intl, Denver Intl - Washington, D.C. Reagan-National or Denver Intl - Baltimore/Washington as they are the most popular.

What are the cheapest flights from Denver to Washington, D.C.?

Looking for the cheapest flight from Denver to Washington, D.C.? While on average our users pay $1,126, our data indicates the cheapest price to be $193. The most popular route (Denver Intl - Washington, D.C. Dulles Intl), is priced around $245.

What are the most reliable airlines from Denver to Washington, D.C.?

Before booking your flight to Washington, D.C. from Denver, check out the most reliable airlines to get you to your destination on time: Avianca (95%), ITA Airways (94%), Brussels Airlines( 89%).

What are the most popular airlines that fly from Denver to Washington, D.C.?

The most popular airlines flying from Denver to Washington, D.C. are Frontier, United Airlines and Southwest. Something to consider prior to booking your flight.

Most accurate provider : When it comes to deals on Denver-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Denver-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Denver to Washington, D.C.?

Most people fly from Denver Intl (DEN) if they book a flight from Denver to Washington, D.C.. On average, Denver Intl has 25 outbound flights to Washington, D.C. per day from 6 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

Can I find deals for flights from Denver to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Denver to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Denver to Washington, D.C.?

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

Can I find deals for business class flights from Denver to Washington, D.C.?

Yes. Cheapflights offers flight deals from Denver to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$87+ Cheap Flights from Denver to Washington, D.C.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Denver to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Denver Intl to Washington, D.C. are usually found in January or February, booked 87 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from Denver to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Denver to Washington, D.C.
Explore the most affordable flight options available from Denver to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.

Sat 10/1712:07 pm -

2 stops10h 14m

Sat 10/247:50 am -

2 stops16h 21m

Deal found 9/17

$236

Tue 12/110:18 am -

1 stop7h 54m

Thu 12/103:08 pm -

1 stop19h 05m

Deal found 9/17

$239

Tue 10/137:31 am -

1 stop20h 49m

Fri 10/169:06 pm -

1 stop13h 00m

Deal found 9/16

$240

Fri 10/239:19 pm -

1 stop12h 15m

Mon 10/269:06 pm -

1 stop13h 16m

Deal found 9/17

$241

Fri 10/239:19 pm -

1 stop12h 15m

Tue 10/279:06 pm -

1 stop13h 16m

Deal found 9/17

$242

Tue 10/66:09 am -

2 stops33h 09m

Sat 10/107:26 pm -

1 stop14h 51m

Deal found 9/17

$243

Sat 11/75:50 am -

1 stop6h 05m

Tue 11/104:00 pm -

1 stop5h 15m

Deal found 9/17

$243

Tue 10/139:12 pm -

2 stops18h 01m

Mon 10/199:06 pm -

1 stop26h 25m

Deal found 9/20

$244

Mon 10/1210:45 pm -

1 stop29h 35m

Mon 10/269:06 pm -

1 stop13h 16m

Deal found 9/18

$245

Fri 10/309:35 am -

Nonstop3h 20m

Tue 11/39:05 am -

1 stop8h 43m

Deal found 9/20

$245

Sat 10/1712:07 pm -

2 stops10h 14m

Tue 10/209:06 pm -

2 stops17h 06m

Deal found 9/17

$246

Tue 10/67:12 pm -

1 stop13h 05m

Tue 10/1311:12 am -

1 stop22h 55m

Deal found 9/18

$247

Best flights from Denver to Washington, D.C.
Discover carefully curated flight deals from Denver to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.

Sat 10/2411:00 am -

1 stop7h 55m

Sat 10/319:35 am -

1 stop8h 05m

Deal found 9/16

$248

Mon 10/266:00 am -

Nonstop3h 19m

Mon 11/25:20 pm -

Nonstop4h 10m

Deal found 9/16

$359

Sun 11/2211:19 am -

1 stop7h 30m

Sat 11/286:05 am -

1 stop7h 08m

Deal found 9/20

$399

Sun 10/115:24 am -

1 stop6h 54m

Tue 10/136:15 am -

1 stop5h 51m

Deal found 9/20

$475

Mon 2/19:10 am -

2 stops7h 20m

Thu 2/49:40 am -

1 stop5h 55m

Deal found 9/16

$286

Thu 11/55:40 pm -

Nonstop3h 20m

Mon 11/99:50 pm -

Nonstop4h 05m

Deal found 9/18

$293

Thu 11/52:10 pm -

Nonstop3h 20m

Sun 11/86:10 am -

Nonstop4h 09m

Deal found 9/19

$359

Mon 10/512:30 am -

Nonstop3h 15m

Fri 10/910:00 pm -

Nonstop3h 55m

Deal found 9/16

$314

Thu 2/188:10 am -

Nonstop3h 17m

Mon 2/228:00 pm -

Nonstop3h 46m

Deal found 9/16

$359

Sat 12/196:00 am -

1 stop6h 14m

Sat 1/1611:00 am -

1 stop7h 26m

Deal found 9/16

$399

Sat 10/171:25 pm -

1 stop7h 34m

Tue 10/204:13 pm -

Nonstop3h 55m

Deal found 9/20

$371

Sat 10/31:15 pm -

1 stop5h 22m

Sat 10/103:00 pm -

1 stop7h 06m

Deal found 9/19

$409

Fri 11/207:10 am -

2 stops7h 05m

Thu 11/266:00 am -

2 stops7h 50m

Deal found 9/17

$340

Wed 11/46:00 am -

2 stops7h 05m

Wed 11/44:50 pm -

2 stops6h 55m

Deal found 9/18

$358

Mon 2/15:40 pm -

Nonstop3h 20m

Thu 2/44:10 pm -

Nonstop3h 57m

Deal found 9/16

$405

Thu 11/55:35 am -

2 stops7h 25m

Mon 11/96:30 pm -

1 stop6h 45m

Deal found 9/18

$362

Wed 10/149:35 am -

Nonstop3h 32m

Tue 10/204:13 pm -

Nonstop3h 55m

Deal found 9/20

$410

Thu 1/147:35 am -

Nonstop3h 15m

Sun 1/177:00 am -

Nonstop4h 10m

Deal found 9/18

$375

Sat 12/195:48 pm -

Nonstop3h 26m

Wed 1/64:10 pm -

Nonstop3h 57m

Deal found 9/16

$445

Thu 12/38:30 am -

Nonstop3h 15m

Sun 12/612:05 pm -

Nonstop4h 00m

Deal found 9/18

$375

Sat 10/105:56 pm -

Nonstop3h 29m

Sun 10/186:35 am -

Nonstop3h 53m

Deal found 9/20

$459

Fri 12/252:25 pm -

2 stops6h 55m

Fri 1/111:00 am -

2 stops8h 25m

Deal found 9/17

$391

Sat 10/105:56 pm -

Nonstop3h 29m

Tue 10/1310:34 pm -

Nonstop3h 56m

Deal found 9/19

$469

Fri 10/3010:30 am -

2 stops7h 20m

Sun 11/14:25 pm -

1 stop5h 40m

Deal found 9/20

$399

Sat 10/175:56 pm -

Nonstop3h 29m

Tue 10/2010:34 pm -

Nonstop3h 56m

Deal found 9/20

$469

Fri 11/205:50 am -

1 stop5h 00m

Mon 11/234:25 pm -

1 stop5h 40m

Deal found 9/20

$404

Mon 12/217:40 am -

Nonstop3h 26m

Thu 12/315:28 pm -

Nonstop4h 13m

Deal found 9/19

$469

Wed 12/303:10 pm -

1 stop5h 10m

Fri 1/111:00 am -

2 stops8h 25m

Deal found 9/16

$414

Tue 12/295:48 pm -

Nonstop3h 26m

Sat 1/26:00 am -

1 stop6h 35m

Deal found 9/17

$476

Wed 10/76:35 am -

2 stops5h 55m

Sat 10/1012:00 pm -

2 stops8h 50m

Deal found 9/17

$421

Last-minute flights from Denver to Washington, D.C.
Discover last-minute flight deals from Denver to Washington, D.C.. Data last updated September 21, 2026 and is based on user searches.

Tue 10/66:09 am -

2 stops33h 09m

Sat 10/107:26 pm -

1 stop14h 51m

Deal found 9/17

$243

Tue 10/67:12 pm -

1 stop13h 05m

Tue 10/1311:12 am -

1 stop22h 55m

Deal found 9/18

$247

Mon 10/1210:45 pm -

1 stop29h 35m

Mon 10/269:06 pm -

1 stop13h 16m

Deal found 9/18

$245

Tue 10/137:31 am -

1 stop20h 49m

Fri 10/169:06 pm -

1 stop13h 00m

Deal found 9/16

$240

Tue 10/139:12 pm -

2 stops18h 01m

Mon 10/199:06 pm -

1 stop26h 25m

Deal found 9/20

$244

Sat 10/1712:07 pm -

2 stops10h 14m

Sat 10/247:50 am -

2 stops16h 21m

Deal found 9/17

$236

Sat 10/1712:07 pm -

2 stops10h 14m

Tue 10/209:06 pm -

2 stops17h 06m

Deal found 9/17

$246

Mon 10/199:44 am -

1 stop18h 36m

Thu 10/226:00 am -

1 stop11h 04m

Deal found 9/17

$248

Fri 10/239:19 pm -

1 stop12h 15m

Mon 10/269:06 pm -

1 stop13h 16m

Deal found 9/17

$241

Fri 10/239:19 pm -

1 stop12h 15m

Tue 10/279:06 pm -

1 stop13h 16m

Deal found 9/17

$242

Sat 10/2411:00 am -

1 stop7h 55m

Sat 10/319:35 am -

1 stop8h 05m

Deal found 9/16

$248

Fri 10/309:35 am -

Nonstop3h 20m

Tue 11/39:05 am -

1 stop8h 43m

Deal found 9/20

$245

One-way flights from Denver to Washington, D.C.
Search for one-way flight options from Denver to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.

Wed 10/287:09 pm -

1 stop17h 07m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/19

$87

Tue 10/206:57 pm -

1 stop12h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/18

$88

Wed 11/46:31 pm -

1 stop12h 31m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/18

$90

Tue 11/36:31 pm -

1 stop13h 19m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/17

$92

Wed 12/29:00 am -

1 stop6h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$93

Tue 10/66:09 am -

1 stop12h 21m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/18

$95

Wed 11/1810:48 am -

1 stop25h 28m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$96

Mon 10/59:16 pm -

1 stop21h 14m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/19

$100

Tue 10/2710:41 am -

1 stop11h 02m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/17

$119

Tue 10/206:10 am -

2 stops16h 11m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/16

$120

Tue 10/273:15 pm -

1 stop5h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/17

$120

Wed 10/147:31 am -

1 stop20h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/17

$121

Find flight deals from Denver to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$236 (Mytrip)
One-way from	$87 (Cheapflightsfares)
Popular in	June
Cheapest in	January
Average price	$362
Good round-trip deal	$312 or less
Good one-way deal	$185 or less

Provider with most accurate pricing for Denver Intl-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. (WAS) flights.

Search Deals

From Denver Intl to Washington, D.C. (WAS)

Search Deals

One-way flight from Denver Intl to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($78 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from Denver Intl to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from Denver Intl to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Tue 10/20

3:15 pm-10:55 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$120

DenverBaltimore

DEN Denver Intl - BWI Baltimore/Washington

DENBWI

Denver Intl

Sat 10/17

5:30 am-10:50 am

Nonstop3h 20m

Baltimore/Washington

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$126

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Mon 11/16

2:25 pm-11:20 pm

2 stops6h 55m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$146

DenverBaltimore

DEN Denver Intl - BWI Baltimore/Washington

DENBWI

Denver Intl

Mon 2/8

5:00 am-10:20 am

Nonstop3h 20m

Baltimore/Washington

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$147

DenverBaltimore

DEN Denver Intl - BWI Baltimore/Washington

DENBWI

Denver Intl

Mon 10/19

5:00 am-10:20 am

Nonstop3h 20m

Baltimore/Washington

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$147

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Fri 2/5

7:35 am-4:45 pm

1 stop7h 10m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$157

Quickest round-trip

DenverBaltimore

DEN Denver Intl - BWI Baltimore/Washington

DENBWI

Denver Intl

Fri 2/5

5:10 pm-10:20 pm

Nonstop3h 10m

Baltimore/Washington

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$167

DenverBaltimore

DEN Denver Intl - BWI Baltimore/Washington

DENBWI

Denver Intl

Fri 10/16

6:45 pm-12:10 am

Nonstop3h 25m

Baltimore/Washington

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$167

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Thu 12/3

11:20 am-6:00 pm

1 stop4h 40m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$174

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Tue 2/9

11:10 am-5:55 pm

1 stop4h 45m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$174

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 resultsSorted by cheapest first

...

Compare providers for flights from Denver to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Washington, D.C. in September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
Super.com	Price Accuracy-	Trust Score*3 stars
BudgetAir	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Denver-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Denver-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Denver with our price prediction graph.

DEN-WAS

DEN-BWI

DEN-IAD

DEN-DCA

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 Denver to Washington, D.C.

DEN-WAS

DEN-BWI

DEN-IAD

DEN-DCA

What is the cheapest month to book a flight from Denver to Washington, D.C.?

Currently, February is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of $238). Flying from Denver to Washington, D.C. in June is currently the most expensive (average of $477). 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 DEN to WAS?

When flying from Denver to Washington, D.C., 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 34% versus a flight in the evening.

Weekly flight availability from Denver to Washington, D.C.

The most flights from DEN to WAS are scheduled on a Sunday (35 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost to fly round-trip from Denver to Washington, D.C.?

Airfare is typical for this route at the moment.

Denver to Washington, D.C. flights typically cost between $231 and $426 in October.
The cheapest round-trip price found within the last 5 days was $236 on Frontier (Oct 17-Oct 24).

What’s the top layover airport for flights from Denver to Washington, D.C.?

Atlanta (ATL) – chosen by Cheapflights users on 93% of 1-stop itineraries from Denver to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from Denver to Washington, D.C.?

Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $177.

What’s the fastest layover option from Denver to Washington, D.C.?

Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 7h 30m.

Which airport typically offers the quickest layover for flights from Denver to Washington, D.C.?

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 2h 37m.

How far ahead should I book a flight from Denver to Washington, D.C.?

To ensure you get the cheapest price possible for a flight from Denver to Washington, D.C., you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Denver to Washington, D.C.?

Travelers seeking maximum savings on their Denver to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Denver to Washington, D.C. flights

Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Washington, D.C. trip

Our travel experts

Paul Rubio

Expert on Ethiopian Air

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Marisa Garcia

Expert on Frontier and Southwest

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Emily Zemler

Expert on DCA and DEN

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Ramsey Qubein

Expert on IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read through reviews of airlines operating flights from Denver to Washington, D.C., such as Southwest,United Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,192 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Southwest

8.0

Very good

4,192 reviews

Southwest

8.0

Very good

4,192 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

United Airlines

7.4

Good

10,225 reviews

Southwest

8.0

Very good

4,192 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

JetBlue

7.1

Good

3,033 reviews

Southwest

8.0

Very good

4,192 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

Frontier

5.6

Fair

2,589 reviews

Southwest

8.0

Very good

4,192 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

Related info for your journey

What airport do you fly from for flights from Denver to Washington, D.C.?
Most people fly from Denver Intl (DEN) if they book a flight from Denver to Washington, D.C.. On average, Denver Intl has 25 outbound flights to Washington, D.C. per day from 6 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.
How long is the flight from Denver to Washington, D.C.?
Southwest and United Airlines can get you from Denver to Washington, D.C. in just under 3h 19m. Your travel time can differ by up to 4h 36m. The distance between Denver and Washington, D.C. is about 1448 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Denver to Washington, D.C. round-trip?
Our cheapest airline available from Denver to Washington, D.C. is Delta. Our recent data shows that you can find tickets from as low as $108 on this airline. Additional options worth looking into are Frontier and American Airlines, starting at $108 and $186 round-trip. Delta is currently priced 68% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Denver to Washington, D.C. one-way?
$70 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $88 and $98, respectively.
What are the most popular routes from Denver to Washington, D.C.?
When deciding which route to take from Denver to Washington, D.C. consider Denver Intl - Washington, D.C. Dulles Intl, Denver Intl - Washington, D.C. Reagan-National or Denver Intl - Baltimore/Washington as they are the most popular.
What are the most reliable airlines from Denver to Washington, D.C.?
Before booking your flight to Washington, D.C. from Denver, check out the most reliable airlines to get you to your destination on time: Avianca (95%), ITA Airways (94%), Brussels Airlines( 89%).
What are the cheapest flights from Denver to Washington, D.C.?
Looking for the cheapest flight from Denver to Washington, D.C.? While on average our users pay $1,126, our data indicates the cheapest price to be $193. The most popular route (Denver Intl - Washington, D.C. Dulles Intl), is priced around $245.
Can I find deals for flights from Denver to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Denver to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Denver to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Washington, D.C..
Can I find deals for business class flights from Denver to Washington, D.C.?
Yes. Cheapflights offers flight deals from Denver to Washington, D.C. 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 Denver to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of $238). Flying from Denver to Washington, D.C. in June is currently the most expensive (average of $477). 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

Alexandria

Arlington

Owings Mills

Lanham

Tysons

Woodbridge

Reston

Herndon

Hyattsville

Rockville

Fredericksburg

Falls Church

Hanover

Laurel

Springfield

Oxon Hill

Clinton

Hunt Valley

Silver Spring

Largo

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Other flights from Denver

Popular flights

Top destinations

Washington, D.C. flight routes

Alternative routes for Denver to Washington, D.C.

Denver to Dulles Intl flights

Denver to Reagan-National flights

Colorado Springs to Dulles Intl flights

Colorado Springs to Reagan-National flights

Grand Junction to Dulles Intl flights

Durango to Reagan-National flights

Vail to Dulles Intl flights

Durango to Dulles Intl flights

Gunnison to Dulles Intl flights

Top 6 airlines flying from Denver to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$108	Average$422	FlexibilityNo cancel fee	On-timeN/A
Frontier	Cheapest$108	Average$304	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$186	Average$298	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$197	Average$427	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$214	Average$520	FlexibilityNo cancel fee	On-time69%
JetBlue	Cheapest$280	Average$363	FlexibilityNo cancel fee	On-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$87+ Cheap flights from Denver (DEN) to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Denver to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Denver to Washington, D.C.

Cheapest flights from Denver to Washington, D.C.Explore the most affordable flight options available from Denver to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.

Explore the most affordable flight options available from Denver to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.

Best flights from Denver to Washington, D.C.Discover carefully curated flight deals from Denver to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.

Discover carefully curated flight deals from Denver to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.

Last-minute flights from Denver to Washington, D.C.Discover last-minute flight deals from Denver to Washington, D.C.. Data last updated September 21, 2026 and is based on user searches.

Discover last-minute flight deals from Denver to Washington, D.C.. Data last updated September 21, 2026 and is based on user searches.

One-way flights from Denver to Washington, D.C.Search for one-way flight options from Denver to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.

Search for one-way flight options from Denver to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.

Find flight deals from Denver to Washington, D.C.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to Washington, D.C. that are best for you.

Compare providers for flights from Denver to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Washington, D.C. in September.

Best time to book a flight from Denver to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Denver with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Denver to Washington, D.C.?

What is the cheapest time of day to fly from DEN to WAS?

Find hourly flight availability from Denver to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 21, 2026.

When flying from Denver to Washington, D.C., 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 34% versus a flight in the evening.

Weekly flight availability from Denver to Washington, D.C.

The most flights from DEN to WAS are scheduled on a Sunday (35 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost to fly round-trip from Denver to Washington, D.C.?

Airfare is typical for this route at the moment.

Denver to Washington, D.C. flights typically cost between $231 and $426 in October.The cheapest round-trip price found within the last 5 days was $236 on Frontier (Oct 17-Oct 24).

What’s the top layover airport for flights from Denver to Washington, D.C.?

Share of 1-stop round-trip flights from Denver to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

Atlanta (ATL) – chosen by Cheapflights users on 93% of 1-stop itineraries from Denver to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from Denver to Washington, D.C.?

Average round-trip fare for 1-stop flights from Denver to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $177.

What’s the fastest layover option from Denver to Washington, D.C.?

Shortest average travel time for 1-stop one-way flights from Denver to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 7h 30m.

Which airport typically offers the quickest layover for flights from Denver to Washington, D.C.?

Average layover duration for 1-stop one-way flights from Denver to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 2h 37m.

How far ahead should I book a flight from Denver to Washington, D.C.?

To ensure you get the cheapest price possible for a flight from Denver to Washington, D.C., you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Denver to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Denver to Washington, D.C.. Price data was last updated on September 19, 2026.

Travelers seeking maximum savings on their Denver to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Denver to Washington, D.C. flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Washington, D.C. trip

Our travel experts

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Denver to Washington, D.C., such as Southwest,United Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Denver to Washington, D.C.?

How long is the flight from Denver to Washington, D.C.?

What are the cheapest airlines flying from Denver to Washington, D.C. round-trip?

What are the cheapest airlines to fly from Denver to Washington, D.C. one-way?

What are the most popular routes from Denver to Washington, D.C.?

What are the most reliable airlines from Denver to Washington, D.C.?

What are the cheapest flights from Denver to Washington, D.C.?

Can I find deals for flights from Denver to Washington, D.C. that include hotel bookings?

How can I find direct flights from Denver to Washington, D.C.?

Can I find deals for business class flights from Denver to Washington, D.C.?

What is the cheapest month to book a flight from Denver to Washington, D.C.?

Traveling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Cheapest flights from Denver to Washington, D.C.
Explore the most affordable flight options available from Denver to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.

Best flights from Denver to Washington, D.C.
Discover carefully curated flight deals from Denver to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.

Last-minute flights from Denver to Washington, D.C.
Discover last-minute flight deals from Denver to Washington, D.C.. Data last updated September 21, 2026 and is based on user searches.

One-way flights from Denver to Washington, D.C.
Search for one-way flight options from Denver to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.

Denver to Washington, D.C. flights typically cost between $231 and $426 in October.
The cheapest round-trip price found within the last 5 days was $236 on Frontier (Oct 17-Oct 24).