Washington, D.C.

$92+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
ago. 23 — ago. 301
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Cheapflights Tip: The best prices from Denver Intl to Washington, D.C. are usually found in February or July, booked 52 days in advance, depart on a Friday or Thursday 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 agosto 18, 2025.

Round-trip from

$148
(CheapOair)

One-way from

$92
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$237

Good round-trip deal

$181 or less

Good one-way deal

$138 or less
From Denver Intl to Washington, D.C. (WAS)
One-way flight from Denver Intl to Washington, D.C. (WAS)
Highest demand for flights based on searches. 6% potential increase in price ($19 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Denver Intl to Washington, D.C. (WAS).
Price to beat on a one-way flight from Denver Intl to Washington, D.C. (WAS).

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 agosto 18, 2025.

This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/244:17 pmDEN - BWI
1 stop16h 36mFrontier
lun. 10/2711:14 amBWI - DEN
1 stop23h 52mFrontier
Deal found 8/18$155
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/412:04 amDEN - BWI
1 stop13h 13mFrontier
dom. 9/79:59 pmBWI - DEN
1 stop11h 46mFrontier
Deal found 8/17$156
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2312:59 amDEN - BWI
1 stop6h 06mFrontier
mar. 10/2811:19 amBWI - DEN
1 stop13h 57mFrontier
Deal found 8/17$157
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
dom. 10/266:00 amDEN - BWI
1 stop11h 53mFrontier
dom. 11/169:21 amBWI - DEN
1 stop6h 55mFrontier
Deal found 8/16$158
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/2811:59 pmDEN - IAD
1 stop18h 10mFrontier
jue. 10/161:07 pmIAD - DEN
1 stop21h 36mFrontier
Deal found 8/18$159
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
vie. 10/1712:59 amDEN - BWI
1 stop6h 06mFrontier
mar. 10/2111:19 amBWI - DEN
1 stop13h 57mFrontier
Deal found 8/17$159
This Booking.com deal was found by Cheapflights users on 8/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/1411:59 pmDEN - IAD
1 stop18h 10mFrontier
dom. 9/2110:09 pmIAD - DEN
1 stop12h 27mFrontier
Deal found 8/17$160
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/246:45 amDEN - DCA
Nonstop3h 25mFrontier
mié. 10/17:00 amDCA - DEN
Nonstop3h 58mFrontier
Deal found 8/17$160
This CheapOair deal was found by Cheapflights users on 8/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/119:14 pmDEN - BWI
1 stop11h 04mFrontier
mar. 10/1411:19 amBWI - DEN
1 stop13h 57mFrontier
Deal found 8/16$160
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/189:18 pmDEN - IAD
1 stop9h 59mFrontier
jue. 10/21:55 pmIAD - DEN
1 stop8h 52mFrontier
Deal found 8/16$161
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/247:48 pmDEN - BWI
1 stop15h 40mFrontier
dom. 8/316:42 pmBWI - DEN
Nonstop4h 03mFrontier
Deal found 8/17$161
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2312:36 amDEN - IAD
1 stop18h 31mFrontier
dom. 11/210:29 pmIAD - DEN
1 stop12h 14mFrontier
Deal found 8/17$162

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 agosto 18, 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. 9/3

11:59 pm-7:29 am

1 stop29h 30m

Baltimore/Washington

dom. 9/7

9:59 pm-7:45 am

1 stop11h 46m

$155

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

jue. 10/2

6:00 am-9:14 pm

1 stop13h 14m

Baltimore/Washington

jue. 10/9

6:06 pm-12:59 am

1 stop8h 53m

$155

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

vie. 10/24

4:17 pm-10:53 am

1 stop16h 36m

Baltimore/Washington

lun. 10/27

11:14 am-9:06 am

1 stop23h 52m

$155

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

jue. 9/4

12:04 am-3:17 pm

1 stop13h 13m

Baltimore/Washington

dom. 9/7

6:50 pm-7:20 am

1 stop14h 30m

$156

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

mié. 10/8

8:03 pm-8:57 pm

1 stop22h 54m

Baltimore/Washington

mar. 10/14

11:19 am-11:16 pm

1 stop13h 57m

$156

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

jue. 9/11

12:04 am-3:17 pm

1 stop13h 13m

Baltimore/Washington

vie. 9/19

6:50 pm-9:14 am

1 stop16h 24m

$156

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

jue. 10/2

12:04 am-3:17 pm

1 stop13h 13m

Baltimore/Washington

lun. 10/6

9:59 pm-9:04 am

1 stop13h 05m

$156

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

dom. 9/28

11:59 pm-8:09 pm

1 stop18h 10m

Washington, D.C. Dulles Intl

jue. 10/16

1:07 pm-8:43 am

1 stop21h 36m

$159

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

dom. 9/14

11:59 pm-8:09 pm

1 stop18h 10m

Washington, D.C. Dulles Intl

dom. 9/21

10:09 pm-8:36 am

1 stop12h 27m

$160

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

dom. 9/28

6:45 am-12:10 pm

Nonstop3h 25m

Washington, D.C. Reagan-National

dom. 9/28

6:00 pm-7:58 pm

Nonstop3h 58m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 52 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.

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 August 8, 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 52 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, July is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of $302). Flying from Denver to Washington, D.C. in April is currently the most expensive (average of $337). 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 agosto 18, 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 47% 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 August 10, 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.

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 agosto 18, 2025.
Read through reviews of airlines operating flights from Denver to Washington, D.C., such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
8.0
Very good

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 18 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.

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

    Frontier can get you from Denver to Washington, D.C. in just under 29h 30m. Your travel time can differ by up to . The distance between Denver and Washington, D.C. is about 1486 mi.

  • 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 $102 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $148 and $166 round-trip. Frontier is currently priced 61% 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?

    $98 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Frontier and United Airlines, with prices starting from $98 and $109, respectively.

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

  • 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 (92%), Brussels Airlines (73%), United Airlines( 73%).

  • 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 $969, our data indicates the cheapest price to be $99. The most popular route (Denver Intl - Baltimore/Washington), is priced around $135.

  • 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, July is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of $302). Flying from Denver to Washington, D.C. in April is currently the most expensive (average of $337). 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

Browse thousands of different options on Cheapflights for your next trip

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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 agosto 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$232FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$337FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$292FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$171Average$381FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$181Average$345FlexibilityNo cancel feeOn-time63%

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