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Washington, D.C.

$79+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Washington, D.C. are usually found in April or September, booked 49 days in advance, depart on a Wednesday or Friday 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 marzo 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$158
(Frontier)

One-way from

$88
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$286

Good round-trip deal

$159 or less

Good one-way deal

$91 or less
Provider with most accurate pricing for Denver Intl-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. (WAS) flights.
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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. 8% potential increase in price ($24 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 March 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 marzo 25, 2025.

This Frontier deal was found by Cheapflights users on 3/24. 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. 4/911:00 amDEN - BWI
Nonstop3h 28mFrontier
mié. 4/165:18 pmBWI - DEN
Nonstop4h 20mFrontier
Deal found 3/24$158
This United Airlines deal was found by Cheapflights users on 3/24. 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.
mié. 4/236:00 amDEN - IAD
Nonstop3h 25mUnited Airlines
mié. 4/305:30 pmIAD - DEN
Nonstop4h 03mUnited Airlines
Deal found 3/24$197
This Flightnetwork deal was found by Cheapflights users on 3/23. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/76:40 amDEN - DCA
Nonstop3h 27mFrontier
mié. 5/147:00 amDCA - DEN
Nonstop4h 02mFrontier
Deal found 3/23$197
This Southwest deal was found by Cheapflights users on 3/23. 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. 4/2311:35 pmDEN - BWI
Nonstop3h 25mSouthwest
mar. 4/297:40 amBWI - DEN
Nonstop4h 00mSouthwest
Deal found 3/23$197
This JetBlue Airways deal was found by Cheapflights users on 3/24. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/92:38 pmDEN - DCA
1 stop6h 20mJetBlue
dom. 5/116:00 amDCA - DEN
1 stop9h 43mJetBlue
Deal found 3/24$217
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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.
jue. 5/16:30 pmDEN - BWI
1 stop15h 00mSun Country Air
lun. 5/512:30 pmBWI - DEN
1 stop6h 57mSun Country Air
Deal found 3/24$221
This American Airlines deal was found by Cheapflights users on 3/24. 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. 4/237:20 amDEN - BWI
2 stops7h 43mAmerican Airlines
mar. 4/295:00 amBWI - DEN
1 stop6h 14mAmerican Airlines
Deal found 3/24$222
This Southwest deal was found by Cheapflights users on 3/24. 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. 4/238:45 amDEN - IAD
Nonstop3h 20mSouthwest
mar. 4/296:40 pmIAD - DEN
Nonstop4h 05mSouthwest
Deal found 3/24$227
This Booking.com deal was found by Cheapflights users on 3/24. 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.
sáb. 6/2110:52 amDEN - BWI
Nonstop3h 33mMultiple Airlines
mié. 6/2512:25 pmBWI - DEN
1 stop9h 42mMultiple Airlines
Deal found 3/24$233
This Sun Country Air deal was found by Cheapflights users on 3/24. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/176:25 pmDEN - IAD
1 stop14h 58mSun Country Air
dom. 4/207:30 amIAD - DEN
1 stop11h 45mSun Country Air
Deal found 3/24$235
This Delta deal was found by Cheapflights users on 3/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/2512:55 amDEN - IAD
1 stop8h 28mDelta
sáb. 5/36:00 amIAD - DEN
1 stop8h 22mDelta
Deal found 3/23$236
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/263:10 pmDEN - DCA
1 stop6h 48mDelta
sáb. 5/310:19 amDCA - DEN
1 stop7h 50mDelta
Deal found 3/24$236

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 marzo 25, 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. 4/9

11:00 am-4:28 pm

Nonstop3h 28m

Baltimore/Washington

mié. 4/16

5:18 pm-7:38 pm

Nonstop4h 20m

$158

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mié. 4/23

6:00 am-11:25 am

Nonstop3h 25m

Washington, D.C. Dulles Intl

mar. 4/29

8:30 am-10:28 am

Nonstop3h 58m

$197

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

mié. 4/23

11:35 pm-5:00 am

Nonstop3h 25m

Baltimore/Washington

mar. 4/29

7:40 am-9:40 am

Nonstop4h 00m

$197

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mié. 4/16

6:45 am-12:04 pm

Nonstop3h 19m

Washington, D.C. Reagan-National

mar. 4/22

1:00 pm-3:07 pm

Nonstop4h 07m

$198

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

jue. 5/1

10:39 pm-7:41 am

1 stop7h 02m

Washington, D.C. Reagan-National

dom. 5/4

6:10 am-11:17 am

1 stop7h 07m

$217

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

jue. 5/1

6:30 pm-11:30 am

1 stop15h 00m

Baltimore/Washington

lun. 5/5

12:30 pm-5:27 pm

1 stop6h 57m

$221

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

mié. 4/23

7:20 am-5:03 pm

2 stops7h 43m

Baltimore/Washington

mar. 4/29

5:00 am-9:14 am

1 stop6h 14m

$222

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mié. 4/23

8:45 am-2:05 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

mar. 4/29

6:40 pm-8:45 pm

Nonstop4h 05m

$227

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

sáb. 6/21

10:52 am-4:25 pm

Nonstop3h 33m

Baltimore/Washington

mié. 6/25

12:25 pm-8:07 pm

1 stop9h 42m

$233

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

jue. 4/17

6:25 pm-11:23 am

1 stop14h 58m

Washington, D.C. Dulles Intl

dom. 4/20

7:30 am-5:15 pm

1 stop11h 45m

$235

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 50 results
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 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.

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, use the A Line train to reach DEN from downtown Denver in 37 minutes, avoiding traffic hassles.

Read more about DENby Emily Zemler
DCA

DCA is easily accessible via the Metro, with a dedicated stop on the Yellow and Blue lines, offering a clean and affordable transit 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 downtown 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 March 21, 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 49 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 June is currently the most expensive (average of $387). 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 marzo 25, 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 52% 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 March 23, 2025.

Travelers seeking maximum savings on their Denver to Washington, D.C. flight should consider departing on Wednesday 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 marzo 25, 2025.

The most flights from DEN to WAS are scheduled on a Tuesday (28 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

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.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

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).

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 marzo 25, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Denver to Washington, D.C. have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,330 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 20 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 $158 on this airline. Additional options worth looking into are United Airlines and Southwest, starting at $197 and $217 round-trip. Frontier is currently priced 38% 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?

    $88 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 Southwest, with prices starting from $99 and $109, 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: Copa Airlines (91%), United Airlines (90%), Lufthansa( 90%).

  • 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 $1,512, our data indicates the cheapest price to be $134. The most popular route (Denver Intl - Washington, D.C. Dulles Intl), is priced around $197.

  • 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 June is currently the most expensive (average of $387). 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
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Bowie
Gettysburg
National Harbor
Oxon Hill
Reston

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.

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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$79Average$214FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$311FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$351FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$172Average$404FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$218Average$358FlexibilityNo cancel feeOn-time63%
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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.