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Cheap flights from Denver to Washington, D.C. from £66

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
3 Sep — 10 Sep1
1 adult

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

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 August 2025.

Round-trip from

£131

One-way from

£66

Popular in

December

Cheapest in

September

Average price

£175
Southwest
  • Southwest
  • 1/10-4/10
  • Nonstop
  • 7h 10m total
  • Denver to Washington, D.C.
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United Airlines
  • United Airlines
  • 15/11
  • Nonstop
  • 3h 18m total
  • Denver to Washington, D.C.
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Highest demand for flights based on searches. 6% potential increase in price (£10 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Denver to Washington, D.C.

Cheapest flights from Denver to Washington, D.C.
Explore the most affordable flight options available from Denver to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Wed 1/1016:45DEN - IAD
Nonstop3h 20mSouthwest
Sat 4/1006:40IAD - DEN
Nonstop3h 50mSouthwest
Deal found 27/8£131
Fri 3/1013:56DEN - IAD
Nonstop3h 27mUnited Airlines
Wed 15/1022:09IAD - DEN
Nonstop3h 48mUnited Airlines
Deal found 27/8£139
Tue 23/908:00DEN - IAD
Nonstop3h 26mUnited Airlines
Tue 30/922:09IAD - DEN
Nonstop3h 48mUnited Airlines
Deal found 27/8£146
Thu 25/923:59DEN - IAD
Nonstop3h 23mUnited Airlines
Sat 27/922:09IAD - DEN
Nonstop3h 50mUnited Airlines
Deal found 28/8£147
Fri 3/1015:40DEN - IAD
Nonstop3h 27mUnited Airlines
Mon 6/1022:09IAD - DEN
Nonstop3h 48mUnited Airlines
Deal found 26/8£147
Wed 24/910:12DEN - IAD
Nonstop3h 22mUnited Airlines
Fri 26/922:09IAD - DEN
Nonstop3h 48mUnited Airlines
Deal found 27/8£154
Thu 25/917:30DEN - IAD
Nonstop3h 20mSouthwest
Thu 2/1019:45IAD - DEN
Nonstop3h 50mSouthwest
Deal found 28/8£155
Sun 12/1006:38DEN - DCA
Nonstop3h 26mFrontier
Sun 19/1007:00DCA - DEN
Nonstop4h 08mFrontier
Deal found 27/8£156
Thu 18/908:00DEN - IAD
Nonstop3h 20mSouthwest
Sat 27/917:05IAD - DEN
Nonstop3h 50mSouthwest
Deal found 27/8£161
Wed 17/923:59DEN - IAD
Nonstop3h 23mUnited Airlines
Fri 19/922:14IAD - DEN
Nonstop3h 45mUnited Airlines
Deal found 27/8£161
Fri 19/917:30DEN - IAD
Nonstop3h 20mSouthwest
Sun 21/907:40IAD - DEN
Nonstop3h 35mSouthwest
Deal found 27/8£162
Wed 8/1010:15DEN - DCA
1 stop6h 35mSouthwest
Mon 13/1006:10DCA - DEN
1 stop6h 00mSouthwest
Deal found 27/8£162

Cheapflights Fare Finder

 
Customise your flight search to find flights from Denver to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 August 2025.
Use the filters below to find and compare flights from Denver to Washington, D.C. that are best for you.

Fly from

Denver

Fly to

Washington, D.C.

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 1/10

23:59-05:22

Nonstop3h 23m

Washington, D.C. Dulles Intl

Sat 11/10

22:09-23:57

Nonstop3h 48m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 1/11

17:40-23:00

Nonstop3h 20m

Washington, D.C. Dulles Intl

Tue 4/11

17:45-19:45

Nonstop4h 00m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 28/10

23:59-05:16

Nonstop3h 17m

Washington, D.C. Dulles Intl

Sat 1/11

17:18-19:29

Nonstop4h 11m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 18/10

17:40-23:00

Nonstop3h 20m

Washington, D.C. Dulles Intl

Tue 21/10

18:40-20:35

Nonstop3h 55m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 21/10

08:01-13:28

Nonstop3h 27m

Washington, D.C. Dulles Intl

Tue 28/10

17:18-19:29

Nonstop4h 11m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 25/10

23:59-05:22

Nonstop3h 23m

Washington, D.C. Dulles Intl

Wed 29/10

08:25-10:24

Nonstop3h 59m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 22/10

23:59-05:22

Nonstop3h 23m

Washington, D.C. Dulles Intl

Tue 28/10

17:18-19:29

Nonstop4h 11m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 4/10

23:59-05:22

Nonstop3h 23m

Washington, D.C. Dulles Intl

Sat 11/10

22:09-23:57

Nonstop3h 48m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 8/11

08:00-13:18

Nonstop3h 18m

Washington, D.C. Dulles Intl

Sat 15/11

08:25-10:24

Nonstop3h 59m

£131

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 3/10

18:10-23:30

Nonstop3h 20m

Washington, D.C. Dulles Intl

Tue 7/10

18:40-20:35

Nonstop3h 55m

£139

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 37 results
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Best time to book a flight from Denver to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Denver with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Washington, D.C.

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

Use this chart to determine the optimal time to book a return flight from Denver to Washington, D.C.. Price data was last updated on 22 August 2025.

Booking 52 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Washington, D.C.. 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 Denver to Washington, D.C.?

Currently, January is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of £599). Flying from Denver to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to WAS?

Find hourly flight availability from Denver to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Washington, D.C. as you normally would.

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

Explore weekly flight availability from Denver to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 August 2025.

The most flights from DEN to WAS are scheduled on a Monday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

Related info for your journey

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

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

    Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly out of when you book flights from Denver to Washington, D.C.. 0 airlines have flights from Denver Intl to Washington, D.C. on a regular basis. Booking flights from Denver Intl to Washington, D.C. should not be difficult; the airport handles an average of 27 outbound flights to Washington, D.C. per day.

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

    Departing from Denver to Washington, D.C. will take you 3h 20m. The distance between Denver and Washington, D.C. is about 1448 mi. Most flights are nonstop.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Washington, D.C. on time: Avianca (92%), Brussels Airlines (73%), United Airlines (73%).

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

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Washington, D.C. (average of £599). Flying from Denver to Washington, D.C. in July is currently the most expensive (average of £947). 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

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
College Park
Laurel
Tysons

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Deals for Denver to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Denver to Washington, D.C.?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington, D.C. from Denver.

Can Cheapflights find flights from Denver to Washington, D.C. with no change fees?

Certainly. Search results for flights to Washington, D.C. from Denver shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Denver to Washington, D.C. become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Denver today and book when prices fit your budget.

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