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$98+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 August, booked 77 days in advance, depart on a Wednesday or Saturday and return on a Friday

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 junio 12, 2025.

Round-trip from

$185
(Cheapflightsfares)

One-way from

$99
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$307

Good round-trip deal

$128 or less

Good one-way deal

$127 or less
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. 2% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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.
lun. 7/286:00 pmDCA - DEN
Nonstop4h 05mFrontier
lun. 8/46:38 amDEN - DCA
Nonstop3h 26mFrontier
Deal found 6/12$185
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/98:06 pmIAD - DEN
Nonstop3h 51mUnited Airlines
sáb. 8/166:01 amDEN - IAD
Nonstop3h 26mUnited Airlines
Deal found 6/11$187
This American Airlines deal was found by Cheapflights users on 6/10. 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.
sáb. 9/135:40 pmIAD - DEN
1 stop6h 29mAmerican Airlines
sáb. 9/1311:59 pmDEN - IAD
1 stop6h 47mAmerican Airlines
Deal found 6/10$191
This Frontier deal was found by Cheapflights users on 6/11. 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. 9/117:21 pmBWI - DEN
1 stop15h 12mFrontier
vie. 9/1212:32 pmDEN - BWI
Nonstop3h 32mFrontier
Deal found 6/11$194
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/269:20 pmBWI - DEN
Nonstop4h 00mSouthwest
mié. 7/3011:55 pmDEN - BWI
Nonstop3h 20mSouthwest
Deal found 6/10$197
This American Airlines deal was found by Cheapflights users on 6/12. 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.
mar. 8/195:55 amDCA - DEN
1 stop6h 11mAmerican Airlines
mié. 8/277:22 amDEN - DCA
1 stop6h 54mAmerican Airlines
Deal found 6/12$197
This Booking.com deal was found by Cheapflights users on 6/10. 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.
jue. 9/43:00 pmIAD - DEN
1 stop19h 33mFrontier
dom. 9/712:34 amDEN - IAD
1 stop11h 41mFrontier
Deal found 6/10$215
This Southwest deal was found by Cheapflights users on 6/11. 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.
mar. 7/157:00 pmIAD - DEN
Nonstop3h 55mSouthwest
sáb. 7/196:00 pmDEN - IAD
Nonstop3h 30mSouthwest
Deal found 6/11$217
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/14:46 pmIAD - DEN
1 stop16h 30mAllegiant Air
jue. 8/75:42 pmDEN - IAD
1 stop18h 41mAllegiant Air
Deal found 6/9$228
This Southwest deal was found by Cheapflights users on 6/11. 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.
jue. 9/256:00 amDCA - DEN
1 stop6h 35mSouthwest
lun. 9/297:35 amDEN - DCA
1 stop4h 30mSouthwest
Deal found 6/11$232
This Delta deal was found by Cheapflights users on 6/10. 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.
jue. 11/66:00 amBWI - DEN
1 stop6h 11mDelta
mar. 11/119:40 amDEN - BWI
1 stop7h 07mDelta
Deal found 6/10$237
This Delta deal was found by Cheapflights users on 6/10. 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.
mar. 7/155:28 pmDCA - DEN
1 stop7h 38mDelta
vie. 7/2512:59 amDEN - DCA
1 stop6h 10mDelta
Deal found 6/10$237

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 junio 12, 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

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

lun. 7/28

7:00 am-8:56 am

Nonstop3h 56m

Denver Intl

lun. 8/4

6:38 am-12:04 pm

Nonstop3h 26m

$185

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

sáb. 8/9

8:06 pm-9:57 pm

Nonstop3h 51m

Denver Intl

sáb. 8/16

6:01 am-11:27 am

Nonstop3h 26m

$187

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

sáb. 9/13

5:40 pm-10:09 pm

1 stop6h 29m

Denver Intl

sáb. 9/13

11:59 pm-8:46 am

1 stop6h 47m

$191

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

mié. 7/9

5:26 pm-7:31 pm

Nonstop4h 05m

Denver Intl

lun. 7/14

10:57 am-4:31 pm

Nonstop3h 34m

$194

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

sáb. 7/26

9:20 pm-11:20 pm

Nonstop4h 00m

Denver Intl

mié. 7/30

11:55 pm-5:15 am

Nonstop3h 20m

$197

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

mar. 8/19

5:55 am-10:06 am

1 stop6h 11m

Denver Intl

mié. 8/27

7:22 am-4:16 pm

1 stop6h 54m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

jue. 9/4

3:00 pm-8:33 am

1 stop19h 33m

Denver Intl

dom. 9/7

12:34 am-2:15 pm

1 stop11h 41m

$215

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

mié. 7/30

7:00 pm-8:55 pm

Nonstop3h 55m

Denver Intl

lun. 8/4

6:00 pm-11:30 pm

Nonstop3h 30m

$227

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

vie. 8/1

4:46 pm-7:16 am

1 stop16h 30m

Denver Intl

jue. 8/7

5:42 pm-2:23 pm

1 stop18h 41m

$228

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

mar. 7/15

5:23 pm-11:06 pm

1 stop7h 43m

Denver Intl

lun. 7/28

12:55 am-8:59 am

1 stop6h 04m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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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

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
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 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 June 9, 2025.

Booking 76 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 junio 12, 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 June 8, 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 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 junio 12, 2025.

The most flights from WAS to DEN are scheduled on a Wednesday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 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 junio 12, 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
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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

  • How popular is this Washington, D.C. to Denver flight route?

    This flight path from Washington, D.C. to Denver Intl was viewed by 105 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 $185 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $187 and $197 round-trip. Frontier is 34% 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 United Airlines, with whom users have recently found tickets for as low as $99. 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 United Airlines (85%), Southwest (66%) and Frontier (46%).

  • 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 $755, our data indicates the cheapest price to be $98. The most popular route (Baltimore/Washington - Denver Intl), is priced around $170.

  • 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
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Grand Lake
Broomfield
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Greeley
Limon

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.
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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$229FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$155Average$275FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$166Average$332FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$186Average$381FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$215Average$321FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$301FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$217Average$350FlexibilityNo cancel feeOn-time63%

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