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$79+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Denver Intl are usually found in September or January, booked 37 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$145
(Kiwi.com)

One-way from

$79
(Frontier)

Popular in

December

Cheapest in

September

Average price

$305

Good round-trip deal

$128 or less

Good one-way deal

$108 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Denver Intl flights.
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From Washington, D.C. (WAS) to Denver Intl
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One-way flight from Washington, D.C. (WAS) to Denver Intl
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Highest demand for flights based on searches. 3% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 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 Washington, D.C. (WAS) to Denver Intl.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Denver Intl.
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Find 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 March 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.
Wed 4/95:18 pmBWI - DEN
Nonstop4h 20mFrontier
Wed 4/1611:00 amDEN - BWI
Nonstop3h 28mFrontier
Deal found 3/24$158
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/157:00 amDCA - DEN
Nonstop4h 09mFrontier
Tue 4/1511:35 amDEN - DCA
Nonstop3h 24mFrontier
Deal found 3/23$193
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.
Wed 4/237:50 amIAD - DEN
Nonstop3h 50mSouthwest
Tue 4/2912:35 pmDEN - IAD
Nonstop3h 20mSouthwest
Deal found 3/24$197
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.
Wed 4/234:07 pmBWI - DEN
Nonstop4h 06mUnited Airlines
Wed 4/306:05 pmDEN - BWI
Nonstop3h 25mUnited Airlines
Deal found 3/24$197
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/65:35 pmIAD - DEN
Nonstop4h 03mUnited Airlines
Sat 5/247:05 pmDEN - IAD
Nonstop3h 29mUnited Airlines
Deal found 3/23$207
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.
Wed 4/95:18 pmBWI - DEN
Nonstop4h 20mMultiple Airlines
Thu 4/176:25 pmDEN - BWI
1 stop13h 38mMultiple Airlines
Deal found 3/24$213
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:09 amDCA - DEN
1 stop9h 34mJetBlue
Fri 5/232:38 pmDEN - DCA
1 stop6h 20mJetBlue
Deal found 3/23$216
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2812:05 pmBWI - DEN
1 stop6h 30mSun Country Air
Thu 5/16:30 pmDEN - BWI
1 stop15h 00mSun Country Air
Deal found 3/24$225
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.
Tue 4/156:40 amBWI - DEN
1 stop6h 35mSouthwest
Wed 4/235:35 pmDEN - BWI
Nonstop3h 30mSouthwest
Deal found 3/24$227
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.
Fri 10/1012:40 pmIAD - DEN
1 stop5h 48mSun Country Air
Thu 10/1610:03 amDEN - IAD
1 stop24h 24mSun Country Air
Deal found 3/24$235
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.
Tue 4/86:00 amIAD - DEN
1 stop8h 24mDelta
Mon 4/1412:55 amDEN - IAD
1 stop5h 36mDelta
Deal found 3/24$236
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.
Sat 4/266:00 amDCA - DEN
1 stop6h 23mAmerican Airlines
Sat 5/38:06 amDEN - DCA
1 stop6h 04mAmerican Airlines
Deal found 3/24$236

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 March 25, 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

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Wed 4/9

5:18 pm-7:38 pm

Nonstop4h 20m

Denver Intl

Wed 4/16

11:00 am-4:28 pm

Nonstop3h 28m

$158

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 4/15

7:00 am-9:09 am

Nonstop4h 09m

Denver Intl

Tue 4/15

11:35 am-4:59 pm

Nonstop3h 24m

$193

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 4/23

7:50 am-9:40 am

Nonstop3h 50m

Denver Intl

Wed 4/30

8:45 am-2:05 pm

Nonstop3h 20m

$197

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Wed 4/23

4:07 pm-6:13 pm

Nonstop4h 06m

Denver Intl

Wed 4/30

6:05 pm-11:30 pm

Nonstop3h 25m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 5/6

5:35 pm-7:38 pm

Nonstop4h 03m

Denver Intl

Sat 5/24

7:05 pm-12:34 am

Nonstop3h 29m

$207

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Wed 4/9

5:18 pm-7:38 pm

Nonstop4h 20m

Denver Intl

Thu 4/17

6:25 pm-10:03 am

1 stop13h 38m

$213

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 5/20

6:09 am-1:43 pm

1 stop9h 34m

Denver Intl

Fri 5/23

2:38 pm-10:58 pm

1 stop6h 20m

$216

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Mon 4/28

12:05 pm-4:35 pm

1 stop6h 30m

Denver Intl

Thu 5/1

6:30 pm-11:30 am

1 stop15h 00m

$225

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Tue 4/15

6:40 am-11:15 am

1 stop6h 35m

Denver Intl

Wed 4/23

5:35 pm-11:05 pm

Nonstop3h 30m

$227

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 4/8

6:00 am-12:24 pm

1 stop8h 24m

Denver Intl

Mon 4/14

12:55 am-8:31 am

1 stop5h 36m

$236

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 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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust 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 Washington, D.C.-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Denver flight deals on Cheapflights vs. FlightHub >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 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 Washington, D.C.-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Washington, D.C. to Denver 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 Washington, D.C. to Denver trip
Airports
DCA

For a stress-free departure from DCA, consider using the Metro, which is clean, affordable, and directly connected to the airport.

Read more about DCAby Emily Zemler
DEN

Upon arrival at DEN, the A Line train offers a convenient 37-minute ride to downtown Denver's Union Station every 15 minutes.

Read more about DENby Emily Zemler
Our travel experts
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

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 March 21, 2025.

Booking 37 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Denver (average of $197). Flying from Washington, D.C. to Denver in March is currently the most expensive (average of $278). 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 March 25, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 29% on flights from Washington, D.C. to Denver by exploring options for tickets at noon.

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 March 23, 2025.

Travelers seeking maximum savings on their Washington, D.C. to Denver flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday afternoons 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 March 25, 2025.

The most flights from WAS to DEN are scheduled on a Monday (32 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (24 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 March 25, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Washington, D.C. to Denver. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
9,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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 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 28 flights from Washington, D.C. to Denver Intl per day from 7 different airlines.

  • 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 $145 on this airline. Additional options worth looking into are Southwest and United Airlines, starting at $197 and $197 round-trip. Frontier is 48% 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 $79. However, be on the lookout for offers from United Airlines and Sun Country Air, 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. Reagan-National - Denver Intl or Baltimore/Washington - Denver Intl, Washington, D.C. Dulles Intl - 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 Southwest (87%), Copa Airlines (87%) and Ethiopian Air (87%).

  • 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 $934, our data indicates the cheapest price to be $134. The most popular route (Washington, D.C. Dulles Intl - Denver Intl), is priced around $197.

  • 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Denver (average of $197). Flying from Washington, D.C. to Denver in March is currently the most expensive (average of $278). 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
Westminster
Lakewood
Black Hawk
Winter Park
Broomfield
Cripple Creek
Silverthorne
Golden
Brighton
Greeley
Frisco
Wheat Ridge
Grand Lake
Idaho Springs
Central City
Copper Mountain
Longmont
Thornton
Limon
Dillon

Browse thousands of different options on Cheapflights for your next trip

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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
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Top 7 airlines flying from Washington, D.C. to Denver

Discover the top 7 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$66Average$221FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$110Average$280FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$166Average$374FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$185Average$387FlexibilityNo cancel feeOn-time69%
DeltaCheapest$195Average$299FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$204Average$356FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$215Average$321FlexibilityNo cancel feeOn-time62%
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