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Dulles Intl

$84+ Cheap flights from Denver (DEN) to Dulles Intl (IAD)

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — IAD
Dec 7 — Dec 141
Sat 12/7
Sat 12/14
1 adult, Economy
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The best prices from Denver Intl to Washington, D.C. Dulles Intl are usually found in September or January, booked 54 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Denver to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Dulles Intl (IAD). 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 2, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

March

Cheapest in

September

Round-trip from

$130
(Mytrip)

One-way from

$84
(Trip.com)
Provider with most accurate pricing for Denver Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. Dulles Intl flights.
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High demand for flights, 19% potential price rise
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Best time to find cheap flights, 15% potential price drop
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From Denver Intl to Washington, D.C. Dulles Intl
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One-way flight from Denver Intl to Washington, D.C. Dulles Intl
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Find flight deals from Denver to Dulles Intl

Cheapest flights from Denver to Dulles Intl
Explore the most affordable flight options available from Denver to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 2, 2024.

This CheapOair deal was found by Cheapflights users on 12/1. 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 12/1612:50 amDEN - IAD
1 stop28h 50mFrontier
Fri 1/1012:56 pmIAD - DEN
1 stop13h 45mFrontier
Deal found 12/1$134
This United Airlines deal was found by Cheapflights users on 12/1. 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.
Sun 12/226:05 pmDEN - IAD
Nonstop3h 20mUnited Airlines
Sun 1/125:20 pmIAD - DEN
Nonstop4h 08mUnited Airlines
Deal found 12/1$243
This Delta deal was found by Cheapflights users on 12/1. 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 12/176:35 amDEN - IAD
1 stop8h 09mDelta
Tue 1/76:05 amIAD - DEN
1 stop9h 11mDelta
Deal found 12/1$266
This Southwest deal was found by Cheapflights users on 12/1. 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.
Sun 12/227:50 pmDEN - IAD
Nonstop3h 10mSouthwest
Fri 1/105:50 pmIAD - DEN
Nonstop4h 05mSouthwest
Deal found 12/1$274
This American Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/2511:59 pmDEN - IAD
1 stop6h 50mAmerican Airlines
Fri 1/35:00 amIAD - DEN
1 stop6h 32mAmerican Airlines
Deal found 12/2$288

Find flights from Denver to Dulles Intl within your budget

Customize your flight search to find flights from Denver to Dulles Intl 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 2,650,959 searches. Data last updated December 2, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Mon 12/16

12:50 am-7:40 am

1 stop28h 50m

Washington, D.C. Dulles Intl

Fri 1/10

12:56 pm-12:41 am

1 stop13h 45m

$134

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 1/15

6:00 am-11:23 am

Nonstop3h 23m

Washington, D.C. Dulles Intl

Sat 1/18

10:05 pm-11:59 pm

Nonstop3h 54m

$177

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 1/8

9:50 am-3:05 pm

Nonstop3h 15m

Washington, D.C. Dulles Intl

Sun 1/12

6:55 am-9:00 am

Nonstop4h 05m

$218

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 1/25

1:53 pm-9:05 pm

1 stop5h 12m

Washington, D.C. Dulles Intl

Wed 1/29

6:00 am-9:59 am

1 stop5h 59m

$236

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 1/10

8:05 am-4:14 pm

1 stop6h 09m

Washington, D.C. Dulles Intl

Sun 1/12

1:53 pm-10:06 pm

2 stops10h 13m

$293

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 5/22

6:30 pm-11:47 am

1 stop15h 17m

Washington, D.C. Dulles Intl

Mon 5/26

12:45 pm-5:27 pm

1 stop6h 42m

$315

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 2/12

11:59 pm-9:25 pm

1 stop19h 26m

$84

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 1/28

6:10 pm-11:30 pm

Nonstop3h 20m

$89

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 1/30

6:36 pm-9:14 am

1 stop12h 38m

$111

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sun 1/19

9:50 am-3:05 pm

Nonstop3h 15m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 15 results
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Compare providers for flights from Denver to Dulles Intl

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 Dulles Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice 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 Denver-Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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 Denver to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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.

Travel insights for flights from Denver to Dulles Intl

Get recent, data-driven insights about flights from Denver to Dulles Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Dulles Intl. Price data was last updated on November 22, 2024.

The price you pay for your flight from Denver to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 54 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Denver to Washington, D.C. Dulles Intl Airport (average of $299). Flying from Denver to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). 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 IAD?

Find hourly flight availability from Denver to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 2, 2024.

It’s optimal to fly from Denver to Washington, D.C. Dulles Intl Airport in the evening. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Denver to Dulles Intl. Price data was last updated on November 24, 2024.

Travelers seeking maximum savings on their Denver to Washington, D.C. Dulles Intl Airport flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at noon 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. Dulles Intl Airport

Explore weekly flight availability from Denver to Dulles Intl. 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 2, 2024.

The most flights from DEN to IAD are scheduled on a Sunday (25 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Dulles Intl by month

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

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

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

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated December 2, 2024.
Read through reviews of airlines operating flights from Denver to Washington, D.C., such as Southwest, Frontier and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,951 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,951 reviews
Southwest
8.1
Very good
4,951 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,513 reviews
Southwest
8.1
Very good
4,951 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,698 reviews
Southwest
8.1
Very good
4,951 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
9,141 reviews
Southwest
8.1
Very good
4,951 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,951 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Related info for your journey

Find useful and relevant information for your journey from Denver to Dulles Intl. 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. Dulles Intl?

    Most people fly from Denver Intl (DEN) if they book a flight from Denver to Washington, D.C. Dulles Intl. On average, Denver Intl has 15 outbound flights to Washington, D.C. Dulles Intl 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. Dulles Intl Airport round-trip?

    Our cheapest airline available from Denver to Washington, D.C. Dulles Intl Airport is Frontier. Our recent data shows that you can find tickets from as low as $130 on this airline. Additional options worth looking into are United Airlines and Southwest, starting at $177 and $227 round-trip. Users have found that Frontier is 63% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $84. United Airlines flights start at $89 while deals on Sun Country Air start at $111 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Denver to Washington, D.C. Dulles Intl Airport consider choosing United Airlines (87%), Copa Airlines (86%) or Avianca (84%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Denver to Washington, D.C. Dulles Intl Airport is generally $860, our data shows the cheapest flight currently is $118. When looking at the most popular route, (Denver Intl - Washington, D.C. Dulles Intl), you can expect to pay $172 for that flight.

  • Can I find deals for flights from Denver to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Denver to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Dulles Intl?

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

  • Can I find deals for business class flights from Denver to Dulles Intl?

    Yes. Cheapflights offers flight deals from Denver to Dulles Intl 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. Dulles Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Denver to Washington, D.C. Dulles Intl Airport (average of $299). Flying from Denver to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). 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.

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Alternative routes for Denver to Dulles Intl

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

Top 5 airlines flying from Denver to Dulles Intl

Discover the top 5 airlines that operate flights from Denver to Dulles Intl. 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 2,650,959 searches. Data last updated December 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$107Average$236FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$280FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$206Average$354FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$218Average$333FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$227Average$401FlexibilityNo cancel feeOn-time71%
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