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Washington, D.C.

$75+ Cheap flights from Denver (DEN) to Washington, D.C. (WAS)

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Washington, D.C. are usually found in September or August, booked 65 days in advance, depart on a Friday or Wednesday and return on a Wednesday

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

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 3, 2025.

Round-trip from

$170
(Cheapflightsfares)

One-way from

$75
(Priceline)

Popular in

December

Cheapest in

September

Average price

$259

Good round-trip deal

$223 or less

Good one-way deal

$134 or less
From Denver Intl to Washington, D.C. (WAS)
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One-way flight from Denver Intl to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 7% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Denver Intl to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Denver Intl to Washington, D.C. (WAS).
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Find 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 julio 3, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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.
mié. 7/3010:57 amDEN - BWI
Nonstop3h 34mFrontier
mié. 8/65:26 pmBWI - DEN
Nonstop4h 05mFrontier
Deal found 7/1$170
This United Airlines deal was found by Cheapflights users on 7/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/611:59 pmDEN - IAD
Nonstop3h 23mUnited Airlines
mar. 9/912:35 pmIAD - DEN
Nonstop3h 49mUnited Airlines
Deal found 7/2$177
This Cheapflightsfares deal was found by Cheapflights users on 7/3. 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.
sáb. 7/266:38 amDEN - DCA
Nonstop3h 26mFrontier
sáb. 8/26:00 pmDCA - DEN
Nonstop4h 05mFrontier
Deal found 7/3$178
This Priceline deal was found by Cheapflights users on 7/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/259:18 pmDEN - IAD
1 stop9h 59mFrontier
dom. 10/51:41 pmIAD - DEN
1 stop9h 45mFrontier
Deal found 7/3$179
This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/61:05 pmDEN - DCA
1 stop5h 25mSouthwest
mar. 8/124:40 pmDCA - DEN
1 stop5h 15mSouthwest
Deal found 7/3$192
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/67:02 amDEN - IAD
1 stop6h 17mAmerican Airlines
mar. 8/127:44 amIAD - DEN
1 stop6h 29mAmerican Airlines
Deal found 7/3$197
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/77:22 amDEN - DCA
1 stop5h 10mAmerican Airlines
mar. 8/123:50 pmDCA - DEN
1 stop6h 32mAmerican Airlines
Deal found 7/2$197
This Southwest deal was found by Cheapflights users on 7/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/166:05 amDEN - IAD
1 stop8h 15mSouthwest
sáb. 8/235:05 pmIAD - DEN
Nonstop3h 50mSouthwest
Deal found 7/2$214
This United Airlines deal was found by Cheapflights users on 7/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/262:45 pmDEN - DCA
1 stop5h 58mUnited Airlines
sáb. 8/304:24 pmDCA - DEN
Nonstop3h 56mUnited Airlines
Deal found 7/3$214

Cheapflights Fare Finder

Customize your flight search to find flights from Denver to Washington, D.C. 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 julio 3, 2025.
Use the filters below to find and compare flights from Denver to Washington, D.C. that are best for you.

Fly from

Denver

Fly to

Washington, D.C.

Route

Depart

Return

Price

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

mié. 7/30

10:57 am-4:31 pm

Nonstop3h 34m

Baltimore/Washington

mié. 8/6

5:26 pm-7:31 pm

Nonstop4h 05m

$170

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

sáb. 9/6

11:59 pm-5:22 am

Nonstop3h 23m

Washington, D.C. Dulles Intl

mar. 9/9

12:35 pm-2:24 pm

Nonstop3h 49m

$177

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

sáb. 7/26

6:38 am-12:04 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

sáb. 8/2

6:00 pm-8:05 pm

Nonstop4h 05m

$178

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

jue. 9/25

9:18 pm-9:17 am

1 stop9h 59m

Washington, D.C. Dulles Intl

dom. 10/5

1:41 pm-9:26 pm

1 stop9h 45m

$179

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

jue. 8/21

5:30 pm-10:50 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

dom. 8/24

7:20 pm-9:05 pm

Nonstop3h 45m

$188

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mié. 8/6

1:05 pm-8:30 pm

1 stop5h 25m

Washington, D.C. Reagan-National

mar. 8/12

4:40 pm-7:55 pm

1 stop5h 15m

$192

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mié. 8/6

7:02 am-3:19 pm

1 stop6h 17m

Washington, D.C. Dulles Intl

mié. 8/13

7:25 pm-10:55 pm

1 stop5h 30m

$197

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

jue. 8/7

7:22 am-2:32 pm

1 stop5h 10m

Washington, D.C. Reagan-National

mar. 8/12

3:50 pm-8:22 pm

1 stop6h 32m

$197

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mar. 8/26

2:45 pm-10:43 pm

1 stop5h 58m

Washington, D.C. Reagan-National

sáb. 8/30

4:24 pm-6:20 pm

Nonstop3h 56m

$214

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

sáb. 8/9

6:30 am-7:08 pm

1 stop10h 38m

$75

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 27 results
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The best insider tips for Denver to Washington, D.C. flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Washington, D.C. trip
Airlines
Ethiopian Air

Ethiopian Airlines offers 32-inch pitch in Economy Class, providing better-than-average comfort.


Enjoy Ethiopian national dishes like doro wot on flights, offering a cultural culinary experience.

Read more about Ethiopian Airby Paul Rubio
Frontier

Frontier offers extra comfort seats with 32” separation for a fee, enhancing travel comfort.


Early morning flights have a better chance of taking off and arriving on time.

Read more about Frontierby Marisa Garcia
Airports
DEN

For a smooth departure, reserve a security time online at DEN. It's available for general screening, bypassing long lines.

Read more about DENby Emily Zemler
DCA

DCA is easily accessible via the D.C. Metro, with a dedicated stop on the Yellow and Blue lines, offering a clean and affordable option.

Read more about DCAby Emily Zemler
IAD

Use the Silver Line Metro to reach IAD in under 40 minutes, a cost-effective way to travel from D.C.

Read more about IADby Ramsey Qubein
Our travel experts
Paul Rubio

Paul Rubio

Expert on Ethiopian Air

Paul Rubio

Paul Rubio

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.

Read more
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

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.

Read more
Emily Zemler

Emily Zemler

Expert on DCA and DEN

Emily Zemler

Emily Zemler

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.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

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 more

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.
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.

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Washington, D.C.. Price data was last updated on June 27, 2025.

To ensure you get the cheapest price possible for a flight from Denver to Washington, D.C., you should look to book at least 65 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 month to book a flight from Denver to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of $309). Flying from Denver to Washington, D.C. in July is currently the most expensive (average of $345). 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?

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 julio 3, 2025.

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 in the morning, which can drop the price by up to 50% versus a flight in the evening.

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 June 29, 2025.

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

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

Explore weekly flight availability from Denver to Washington, D.C.. 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 julio 3, 2025.

The most flights from DEN to WAS are scheduled on a Thursday (38 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (21 on average).

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

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated julio 3, 2025.
Read through reviews of airlines operating flights from Denver to Washington, D.C., such as Southwest, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Hawaiian Airlines
7.8
Good
2,545 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,916 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Denver to Washington, D.C.. 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 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 30 outbound flights to Washington, D.C. per day from 5 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • 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 Frontier. Our recent data shows that you can find tickets from as low as $170 on this airline. Additional options worth looking into are United Airlines and Southwest, starting at $177 and $188 round-trip. Frontier is currently priced 35% 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?

    $75 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $99 and $99, 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 - Baltimore/Washington, Denver Intl - Washington, D.C. Dulles Intl or Denver Intl - Washington, D.C. Reagan-National 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: Sun Country Air (100%), Avianca (93%), United Airlines( 74%).

  • 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 $1,386, our data indicates the cheapest price to be $108. The most popular route (Denver Intl - Baltimore/Washington), is priced around $155.

  • 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, August is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of $309). Flying from Denver to Washington, D.C. in July is currently the most expensive (average of $345). 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
Arlington
Woodbridge
Alexandria
Tysons
Silver Spring
Fredericksburg
Linthicum Heights
Gaithersburg
Fairfax
Easton
Towson
Waldorf
Laurel
Falls Church
Rockville
Springfield
National Harbor
Manassas
Dundalk
Bowie

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Top 5 airlines flying from Denver to Washington, D.C.

Discover the top 5 airlines that operate flights from Denver to Washington, D.C.. 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$229FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$347FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$292FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$173Average$379FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$215Average$349FlexibilityNo cancel feeOn-time63%

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