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Cheap flights from Denver to Washington, D.C. from £65

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 18/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
17 Mar — 24 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Denver Intl to Washington, D.C. are usually found in January or February, booked 88 days in advance, depart on a Monday or Tuesday and return on a Tuesday

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

Enter your travel dates to find the best prices.

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 15 February 2026.

Mon 2/307:33
DEN
-
DCA
Nonstop3h 27m
Frontier
Wed 4/308:00
DCA
-
DEN
Nonstop4h 22m
Frontier
Deal found 14/2£126
Tue 21/418:10
DEN
-
IAD
Nonstop3h 30m
Southwest
Sat 25/417:05
IAD
-
DEN
Nonstop4h 00m
Southwest
Deal found 13/2£130
Sun 19/423:59
DEN
-
IAD
Nonstop3h 29m
United Airlines
Tue 21/417:20
IAD
-
DEN
Nonstop4h 09m
United Airlines
Deal found 12/2£144
Tue 28/410:15
DEN
-
IAD
Nonstop3h 31m
United Airlines
Fri 1/522:35
IAD
-
DEN
Nonstop4h 09m
United Airlines
Deal found 13/2£157
Thu 23/423:59
DEN
-
IAD
Nonstop3h 29m
United Airlines
Mon 27/422:35
IAD
-
DEN
Nonstop4h 09m
United Airlines
Deal found 11/2£159
Wed 15/414:59
DEN
-
DCA
1 stop5h 51m
Delta
Wed 22/406:00
DCA
-
DEN
1 stop5h 36m
Delta
Deal found 15/2£159
Mon 4/523:08
DEN
-
DCA
1 stop6h 51m
JetBlue
Tue 5/510:00
DCA
-
DEN
1 stop7h 30m
JetBlue
Deal found 14/2£164
Thu 16/415:30
DEN
-
DCA
1 stop6h 11m
Delta
Wed 22/412:30
DCA
-
DEN
1 stop6h 50m
Delta
Deal found 12/2£166
Mon 23/323:09
DEN
-
DCA
1 stop8h 47m
JetBlue
Mon 30/316:59
DCA
-
DEN
1 stop7h 14m
JetBlue
Deal found 12/2£168
Wed 13/523:59
DEN
-
IAD
Nonstop3h 29m
United Airlines
Sun 17/522:35
IAD
-
DEN
Nonstop4h 09m
United Airlines
Deal found 13/2£171
Fri 24/406:20
DEN
-
IAD
1 stop7h 55m
Delta
Sun 26/419:14
IAD
-
DEN
1 stop7h 19m
Delta
Deal found 13/2£174
Wed 18/306:20
DEN
-
IAD
1 stop5h 12m
Delta
Wed 18/317:32
IAD
-
DEN
1 stop5h 56m
Delta
Deal found 11/2£176

Find 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 15 February 2026.

Round-trip from

£126

One-way from

£65

Popular in

December

Cheapest in

January

Average price

£153
Frontier
  • Frontier
  • 2/3-4/3
  • Nonstop
  • 7h 49m total
  • Denver to Washington, D.C.
Search Deals
United Airlines
  • United Airlines
  • 6/5
  • Nonstop
  • 3h 29m total
  • Denver to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 15 February 2026.
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

Tue 21/4

06:00-11:29

Nonstop3h 29m

Washington, D.C. Dulles Intl

Tue 28/4

17:20-19:29

Nonstop4h 09m

£130

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 12/5

06:00-11:28

Nonstop3h 28m

Washington, D.C. Dulles Intl

Wed 20/5

20:12-22:15

Nonstop4h 03m

£130

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sun 19/4

06:00-11:29

Nonstop3h 29m

Washington, D.C. Dulles Intl

Tue 21/4

20:12-22:15

Nonstop4h 03m

£144

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 30/4

23:59-05:28

Nonstop3h 29m

Washington, D.C. Dulles Intl

Tue 5/5

22:35-00:44

Nonstop4h 09m

£144

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 16/4

06:00-11:29

Nonstop3h 29m

Washington, D.C. Dulles Intl

Wed 22/4

17:15-19:24

Nonstop4h 09m

£144

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 21/4

06:00-11:29

Nonstop3h 29m

Washington, D.C. Dulles Intl

Fri 24/4

22:35-00:44

Nonstop4h 09m

£144

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 18/4

23:59-05:28

Nonstop3h 29m

Washington, D.C. Dulles Intl

Mon 20/4

22:35-00:44

Nonstop4h 09m

£144

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 17/3

18:35-23:40

Nonstop3h 05m

Washington, D.C. Dulles Intl

Tue 24/3

05:50-07:45

Nonstop3h 55m

£159

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 1/5

23:59-05:28

Nonstop3h 29m

Washington, D.C. Dulles Intl

Sun 3/5

20:12-22:15

Nonstop4h 03m

£159

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 24/3

23:59-05:17

Nonstop3h 18m

Washington, D.C. Dulles Intl

Tue 31/3

20:12-22:15

Nonstop4h 03m

£159

Flights are sorted by cheapest return flights first.

Deals found on 14/2

Showing 1-10 of 40 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 13 February 2026.

Booking 88 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 £51). Flying from Denver to Washington, D.C. in May is currently the most expensive (average of £100). 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 15 February 2026.

When flying from Denver to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 84% versus a flight at midday.

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 15 February 2026.

The most flights from DEN to WAS are scheduled on a Friday (33 on average). You will have fewer flight options on Tuesday, 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 28 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 28m. The distance between Denver and Washington, D.C. is about 1448 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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: United Airlines (90%), Avianca (90%), Ethiopian Air (90%).

  • 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 £51). Flying from Denver to Washington, D.C. in May is currently the most expensive (average of £100). 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
Alexandria
College Park

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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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