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$54+ Cheap flights from Washington, D.C. (WAS) to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Washington, D.C. to Denver Intl are usually found in August or January, booked 85 days in advance, depart on a Wednesday or Saturday and return on a Friday

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

Cheapest flights from Washington, D.C. to Denver
Explore the most affordable flight options available from Washington, D.C. to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/7. 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.
Sat 12/138:00 amDCA - DEN
Nonstop4h 13mFrontier
Sun 1/1811:37 amDEN - DCA
Nonstop3h 22mFrontier
Deal found 12/7$201
This CheapOair deal was found by Cheapflights users on 12/8. 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.
Mon 12/159:26 amIAD - DEN
1 stop25h 44mFrontier
Wed 12/1711:59 pmDEN - IAD
1 stop6h 47mFrontier
Deal found 12/8$204
This CheapOair deal was found by Cheapflights users on 12/8. 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.
Mon 12/1511:48 amBWI - DEN
1 stop11h 50mFrontier
Wed 12/179:00 pmDEN - BWI
1 stop12h 44mFrontier
Deal found 12/8$204
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Sun 12/149:43 pmBWI - DEN
1 stop27h 21mFrontier
Tue 12/1611:59 pmDEN - BWI
1 stop8h 22mFrontier
Deal found 12/7$208
This Kiwi.com deal was found by Cheapflights users on 12/7. 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.
Mon 12/156:51 pmBWI - DEN
1 stop15h 52mFrontier
Tue 12/1611:59 pmDEN - BWI
1 stop8h 22mFrontier
Deal found 12/7$210
This JetBlue deal was found by Cheapflights users on 12/7. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:20 amDCA - DEN
1 stop7h 32mJetBlue
Sun 1/410:40 pmDEN - DCA
1 stop9h 55mJetBlue
Deal found 12/7$219
This Frontier deal was found by Cheapflights users on 12/8. 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.
Wed 12/318:00 amDCA - DEN
Nonstop4h 13mFrontier
Sat 1/107:35 amDEN - DCA
Nonstop3h 26mFrontier
Deal found 12/8$223
This Trip.com deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/149:43 pmBWI - DEN
1 stop27h 21mFrontier
Fri 1/1611:59 pmDEN - BWI
1 stop22h 18mFrontier
Deal found 12/7$227
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Mon 12/159:26 amIAD - DEN
1 stop25h 44mFrontier
Thu 12/186:00 amDEN - IAD
1 stop25h 48mFrontier
Deal found 12/7$229
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Sun 12/149:20 pmIAD - DEN
1 stop27h 44mFrontier
Thu 12/186:00 amDEN - IAD
1 stop25h 48mFrontier
Deal found 12/7$233
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Sun 12/149:43 pmBWI - DEN
1 stop27h 21mFrontier
Thu 12/1811:59 pmDEN - BWI
1 stop10h 50mFrontier
Deal found 12/7$233
This Frontier deal was found by Cheapflights users on 12/9. 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.
Tue 12/238:50 pmBWI - DEN
1 stop13h 48mFrontier
Thu 12/2512:16 amDEN - BWI
1 stop8h 30mFrontier
Deal found 12/9$234

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Denver (DEN). 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 December 9, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$54
(WAYA)

Popular in

December

Cheapest in

August

Average price

$358

Good round-trip deal

$128 or less

Good one-way deal

$107 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Denver Intl flights.
Search Deals
From Washington, D.C. (WAS) to Denver Intl
Search Deals
One-way flight from Washington, D.C. (WAS) to Denver Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Denver Intl.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 9, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Denver that are best for you.

Fly from

Washington, D.C.

Fly to

Denver

Route

Depart

Return

Price

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 1/10

3:45 pm-5:50 pm

Nonstop4h 05m

Denver Intl

Sat 1/17

5:00 pm-10:10 pm

Nonstop3h 10m

$177

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 1/13

4:11 pm-6:24 pm

Nonstop4h 13m

Denver Intl

Wed 1/14

7:50 am-1:17 pm

Nonstop3h 27m

$177

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 2/21

4:11 pm-6:29 pm

Nonstop4h 18m

Denver Intl

Wed 2/25

9:35 am-2:59 pm

Nonstop3h 24m

$189

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 1/15

5:30 am-7:30 am

Nonstop4h 00m

Denver Intl

Wed 1/21

10:35 am-3:50 pm

Nonstop3h 15m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 1/21

5:30 pm-7:35 pm

Nonstop4h 05m

Denver Intl

Sun 1/25

5:25 pm-10:40 pm

Nonstop3h 15m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 2/11

7:30 pm-12:28 am

1 stop6h 58m

Denver Intl

Tue 2/17

6:10 am-4:28 pm

1 stop8h 18m

$217

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 2/19

10:25 pm-12:30 am

Nonstop4h 05m

Denver Intl

Mon 2/23

6:00 am-11:20 am

Nonstop3h 20m

$217

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 1/22

5:30 pm-7:35 pm

Nonstop4h 05m

Denver Intl

Sun 1/25

5:25 pm-10:40 pm

Nonstop3h 15m

$217

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 2/26

6:00 am-11:03 am

1 stop7h 03m

Denver Intl

Tue 3/3

11:13 pm-11:00 am

1 stop9h 47m

$219

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 1/28

7:30 pm-12:28 am

1 stop6h 58m

Denver Intl

Sun 2/1

7:05 am-2:30 pm

1 stop5h 25m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 60 results
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Compare providers for flights from Washington, D.C. to Denver

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 Washington, D.C. to Denver in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust 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 Washington, D.C.-Denver flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Washington, D.C.-Denver flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Denver flights, Cheapflights users trust CheapOair the most. CheapOair 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 Washington, D.C.-Denver 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 Washington, D.C. to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Washington, D.C. 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 Washington, D.C. to Denver

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Denver. Price data was last updated on December 5, 2025.

Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Denver (average of $88). Flying from Washington, D.C. to Denver in June is currently the most expensive (average of $173). 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 WAS to DEN?

Find hourly flight availability from Washington, D.C. to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 9, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 13% on flights from Washington, D.C. to Denver by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Denver. Price data was last updated on December 6, 2025.

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

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

Explore weekly flight availability from Washington, D.C. to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 9, 2025.

The most flights from WAS to DEN are scheduled on a Monday (27 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (18 on average).

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

How often are flights from Washington, D.C. to Denver delayed?

About 14% of weekly flights between Washington, D.C. and Denver have experienced delays in the past year, with the average delay time being 160 minutes.

What is the most punctual flight time for Washington, D.C. to Denver flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Denver flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.

The best insider tips for Washington, D.C. to Denver 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 Washington, D.C. to Denver trip
Airlines
Frontier

Frontier's UpFront Plus seats offer a guaranteed empty middle seat for added comfort.


Frontier offers no in-flight entertainment or Wi-Fi, so pre-load your devices.

Read more about FrontierBy Marisa Garcia
Southwest

Enjoy free snacks and non-alcoholic drinks, plus a free drink on special occasions.


Southwest offers free messaging and high-speed Wi-Fi for a fee on flights.

Read more about SouthwestBy Marisa Garcia
Airports
DCA

DCA has two parking garages and an economy lot. Reserve online as lots fill up quickly, especially during busy times.

Read more about DCABy Emily Zemler
IAD

IAD's main terminal can be crowded in the afternoon and evening. Plan extra time for check-in during these hours.

Read more about IADBy Ramsey Qubein
DEN

Use the A Line train for a 37-minute ride from DEN to Union Station. It's efficient and runs every 15 minutes.

Read more about DENBy Emily Zemler
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and Southwest

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

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated December 9, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Washington, D.C. to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,007 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,048 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,085 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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

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

    If you book a flight to Denver from Washington, D.C., you will be flying to Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There are 23 flights from Washington, D.C. to Denver Intl per day from 6 different airlines.

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

    Departing from Washington, D.C. to Denver will take you 4h 05m. The distance from Washington, D.C. to Denver is about 1448 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from Washington, D.C. to Denver is Frontier. Our recent data shows that you can find tickets from as low as $101 on this airline. Additional options worth looking into are JetBlue and American Airlines, starting at $128 and $166 round-trip. Frontier is 64% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $57. However, be on the lookout for offers from Southwest and American Airlines, as they are both options that can get you from Washington, D.C. to Denver for a low price.

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

    While some choose either Washington, D.C. Dulles Intl - Denver Intl or Washington, D.C. Reagan-National - Denver Intl, Baltimore/Washington - Denver Intl is the most popular route from Washington, D.C. to Denver.

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

    The top 3 most reliable airlines when flying from Washington, D.C. to Denver are Avianca (88%), Ethiopian Air (85%) and United Airlines (85%).

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

    Looking for the cheapest flight from Washington, D.C. to Denver? While on average our users pay $881, our data indicates the cheapest price to be $148. The most popular route (Baltimore/Washington - Denver Intl), is priced around $129.

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

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Denver (average of $88). Flying from Washington, D.C. to Denver in June is currently the most expensive (average of $173). 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
Black Hawk
Thornton
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

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.

Alternative routes for Washington, D.C. to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Denver flights
Reagan-National to Denver flights
Dulles Intl to Hayden flights
Dulles Intl to Aspen flights
Dulles Intl to Vail flights
Reagan-National to Vail flights
Dulles Intl to Montrose flights
Reagan-National to Aspen flights
Reagan-National to Hayden flights
Reagan-National to Montrose flights
Dulles Intl to Colorado Springs flights
Reagan-National to Colorado Springs flights
Dulles Intl to Grand Junction flights
Dulles Intl to Durango flights
Reagan-National to Durango flights
Dulles Intl to Gunnison flights
Reagan-National to Gunnison flights
Reagan-National to Grand Junction flights
Dulles Intl to Alamosa flights
Reagan-National to Alamosa flights
Dulles Intl to Cortez flights

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

Discover the top 6 airlines that operate flights from Washington, D.C. to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$106Average$241FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$128Average$321FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$352FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$298FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$178Average$341FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$215Average$390FlexibilityNo cancel feeOn-time69%

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