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Cheap flights from Denver to Washington, D.C. from £75

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — WAS
22 Jul — 29 Jul1
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 17 July 2025.

Round-trip from

£132

One-way from

£75

Popular in

December

Cheapest in

September

Average price

£177
Southwest
  • Southwest
  • 14/8-21/8
  • Nonstop
  • 6h 55m total
  • Denver to Washington, D.C.
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United Airlines
  • United Airlines
  • 29/8
  • Nonstop
  • 3h 28m total
  • Denver to Washington, D.C.
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Highest demand for flights based on searches. 7% potential increase in price (£11 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 July 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 17 July 2025.

Thu 14/817:30DEN - IAD
Nonstop3h 20mSouthwest
Thu 21/807:35IAD - DEN
Nonstop3h 35mSouthwest
Deal found 14/7£132
Tue 7/1017:55DEN - IAD
Nonstop3h 27mUnited Airlines
Thu 9/1022:09IAD - DEN
Nonstop3h 48mUnited Airlines
Deal found 14/7£137
Thu 25/907:35DEN - DCA
1 stop4h 30mSouthwest
Sat 27/906:00DCA - DEN
1 stop6h 05mSouthwest
Deal found 16/7£143
Fri 29/811:27DEN - DCA
Nonstop3h 32mFrontier
Fri 5/913:00DCA - DEN
Nonstop4h 00mFrontier
Deal found 15/7£156
Fri 12/906:00DEN - DCA
1 stop6h 16mUnited Airlines
Mon 15/916:24DCA - DEN
Nonstop3h 56mUnited Airlines
Deal found 16/7£160
Thu 28/818:17DEN - DCA
1 stop19h 49mAlaska Airlines
Sun 31/817:49DCA - DEN
1 stop18h 55mAlaska Airlines
Deal found 14/7£167
Fri 29/815:54DEN - IAD
1 stop5h 58mAmerican Airlines
Fri 5/917:40IAD - DEN
1 stop6h 29mAmerican Airlines
Deal found 15/7£171
Wed 6/800:55DEN - IAD
1 stop6h 04mDelta
Mon 11/817:25IAD - DEN
1 stop8h 50mDelta
Deal found 17/7£177
Tue 26/809:59DEN - DCA
1 stop8h 04mJetBlue
Tue 9/907:59DCA - DEN
1 stop7h 36mJetBlue
Deal found 15/7£177
Fri 29/805:45DEN - DCA
1 stop8h 25mDelta
Tue 9/909:40DCA - DEN
1 stop6h 14mDelta
Deal found 15/7£181
Thu 25/908:00DEN - DCA
1 stop11h 44mHawaiian Airlines
Tue 30/908:00DCA - DEN
1 stop11h 21mHawaiian Airlines
Deal found 15/7£191

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 17 July 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

Thu 14/8

17:30-22:50

Nonstop3h 20m

Washington, D.C. Dulles Intl

Thu 21/8

07:35-09:10

Nonstop3h 35m

£132

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 7/10

17:55-23:22

Nonstop3h 27m

Washington, D.C. Dulles Intl

Thu 9/10

22:09-23:57

Nonstop3h 48m

£137

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 25/9

07:35-14:05

1 stop4h 30m

Washington, D.C. Reagan-National

Sat 27/9

06:00-10:05

1 stop6h 05m

£143

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 29/8

11:27-16:59

Nonstop3h 32m

Washington, D.C. Reagan-National

Fri 5/9

13:00-15:00

Nonstop4h 00m

£156

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 12/9

06:00-14:16

1 stop6h 16m

Washington, D.C. Reagan-National

Mon 15/9

16:24-18:20

Nonstop3h 56m

£160

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 28/8

18:17-16:06

1 stop19h 49m

Washington, D.C. Reagan-National

Sun 31/8

17:49-10:44

1 stop18h 55m

£167

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 29/8

15:54-23:52

1 stop5h 58m

Washington, D.C. Dulles Intl

Fri 5/9

17:40-22:09

1 stop6h 29m

£171

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 6/8

00:55-08:59

1 stop6h 04m

Washington, D.C. Dulles Intl

Mon 11/8

17:25-00:15

1 stop8h 50m

£177

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 26/8

09:59-20:03

1 stop8h 04m

Washington, D.C. Reagan-National

Tue 9/9

07:59-13:35

1 stop7h 36m

£177

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 29/8

05:45-16:10

1 stop8h 25m

Washington, D.C. Reagan-National

Wed 10/9

06:05-10:57

1 stop6h 52m

£181

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 26 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 11 July 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 17 July 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 17 July 2025.

The most flights from DEN to WAS are scheduled on a Monday (38 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 on average).

How much does it cost for a return flight from Denver to Washington, D.C.?

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated 17 July 2025.
Check out reviews from past customers who have flown with Alaska Airlines, Southwest, andDelta from Denver to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very Good
4,241 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very Good
7,957 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,580 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,863 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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 34 outbound flights to Washington, D.C. per day.

  • What are the cheapest airlines flying from Denver to Washington, D.C. round-trip?

    Flying on Southwest is currently your cheapest option to Washington, D.C., with prices starting at £132. Additional return tickets that might be worth considering are offered by United Airlines and Frontier, with the lowest prices starting at £137 and £156, respectively. Southwest is currently priced 32% below the average price you’ll pay for this route.

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

    The cheapet airlines for a one-way flight from Denver to Washington, D.C. are Southwest (£75), United Airlines (£75), and American Airlines (£77).

  • 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 (97%), Brussels Airlines (77%), Ethiopian Air (74%).

  • 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
Arlington
Woodbridge
College Park
Laurel
Tysons

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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?

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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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