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Cheap flights from Washington, D.C. to Denver from £74

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.
WAS — DEN
11 Apr — 18 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. to Denver Intl are usually found in January or February, booked 85 days in advance, depart on a Thursday or Monday and return on a Monday

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

Enter your travel dates to find the best prices.

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 12 March 2026.

Wed 13/520:12
IAD
-
DEN
Nonstop4h 03m
United Airlines
Wed 13/523:59
DEN
-
IAD
Nonstop3h 29m
United Airlines
Deal found 7/3£143
Sat 18/417:05
IAD
-
DEN
Nonstop4h 00m
Southwest
Sat 25/417:35
DEN
-
IAD
Nonstop3h 20m
Southwest
Deal found 9/3£147
Wed 8/415:15
IAD
-
DEN
2 stops17h 20m
Frontier
Wed 15/413:09
DEN
-
IAD
1 stop9h 27m
Frontier
Deal found 11/3£153
Wed 15/420:12
IAD
-
DEN
Nonstop4h 03m
United Airlines
Tue 21/407:45
DEN
-
IAD
Nonstop3h 29m
United Airlines
Deal found 10/3£162
Sat 18/406:00
DCA
-
DEN
1 stop5h 36m
Delta
Fri 24/400:35
DEN
-
DCA
1 stop6h 02m
Delta
Deal found 9/3£162
Wed 8/413:00
DCA
-
DEN
Nonstop4h 05m
Frontier
Wed 15/411:34
DEN
-
DCA
Nonstop3h 25m
Frontier
Deal found 11/3£164
Wed 6/516:30
IAD
-
DEN
Nonstop4h 00m
Southwest
Sun 10/508:25
DEN
-
IAD
1 stop7h 00m
Southwest
Deal found 7/3£166
Fri 17/417:20
IAD
-
DEN
Nonstop4h 09m
United Airlines
Sat 25/407:45
DEN
-
IAD
Nonstop3h 29m
United Airlines
Deal found 10/3£177
Sat 25/406:00
DCA
-
DEN
1 stop8h 15m
Delta
Sat 2/514:39
DEN
-
DCA
1 stop7h 05m
Delta
Deal found 11/3£177
Thu 7/505:55
IAD
-
DEN
Nonstop3h 50m
Southwest
Sun 10/508:25
DEN
-
IAD
1 stop7h 00m
Southwest
Deal found 7/3£181
Sat 2/516:39
DCA
-
DEN
1 stop9h 11m
Delta
Sun 3/506:55
DEN
-
DCA
1 stop30h 32m
Delta
Deal found 9/3£182
Wed 15/417:30
IAD
-
DEN
1 stop8h 35m
Southwest
Tue 21/418:10
DEN
-
IAD
Nonstop3h 30m
Southwest
Deal found 10/3£184

Find 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 12 March 2026.

Round-trip from

£143

One-way from

£74

Popular in

March

Cheapest in

January

Average price

£267

Good round-trip deal

£108 or less

Good one-way deal

£572 or less
United Airlines
  • United Airlines
  • 13/5-13/5
  • Nonstop
  • 7h 32m total
  • Washington, D.C. to Denver
Search Deals
United Airlines
  • United Airlines
  • 19/5
  • Nonstop
  • 4h 03m total
  • Washington, D.C. to Denver
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Denver Intl.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 March 2026.
Use the filters below to find and compare flights from Washington, D.C. to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 29/4

17:20-19:29

Nonstop4h 09m

Denver Intl

Mon 4/5

23:59-05:28

Nonstop3h 29m

£162
Fastest return journey

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 25/4

05:50-07:40

Nonstop3h 50m

Denver Intl

Sat 2/5

17:35-22:55

Nonstop3h 20m

£162

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 18/4

12:00-16:33

1 stop6h 33m

Denver Intl

Fri 24/4

00:35-08:37

1 stop6h 02m

£162

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 8/5

22:35-00:44

Nonstop4h 09m

Denver Intl

Mon 11/5

06:00-11:28

Nonstop3h 28m

£177

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 17/4

18:37-23:19

1 stop6h 42m

Denver Intl

Wed 22/4

06:10-16:15

1 stop8h 05m

£177

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 30/4

22:35-00:44

Nonstop4h 09m

Denver Intl

Sun 3/5

06:00-11:28

Nonstop3h 28m

£177

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 25/4

06:00-12:15

1 stop8h 15m

Denver Intl

Sat 2/5

14:39-23:44

1 stop7h 05m

£177

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 10/4

05:55-07:45

Nonstop3h 50m

Denver Intl

Wed 15/4

18:10-23:40

Nonstop3h 30m

£191

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Fri 24/4

15:35-20:05

1 stop6h 30m

Denver Intl

Mon 27/4

06:35-14:00

1 stop5h 25m

£191

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 17/4

18:37-23:19

1 stop6h 42m

Denver Intl

Tue 21/4

06:10-16:15

1 stop8h 05m

£191

Flights are sorted by cheapest return flights first.

Deals found on 7/3

Showing 1-10 of 45 resultsSorted by cheapest first
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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 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 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 return flight from Washington, D.C. to Denver. Price data was last updated on 6 March 2026.

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Denver, you should look to book at least 85 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Denver (average of £51). Flying from Washington, D.C. to Denver in June is currently the most expensive (average of £130). 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 12 March 2026.

It’s typically best to fly out from Washington, D.C. to Denver in the afternoon. Doing so could potentially save you 37% on the flight price compared to flying in the morning, which is usually more expensive.

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 12 March 2026.

The most flights from WAS to DEN are scheduled on a Wednesday (35 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 on average).

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

How often are flights from Washington, D.C. to Denver delayed?

About 14% of weekly flights between Washington, D.C. and Denver have experienced delays in the past year, with the average delay time being 160 minutes.

What is the most punctual flight time for Washington, D.C. to Denver flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Denver flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.

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.?

    Located just 18.5 mi from the city center, Denver Intl is the airport most travelers will use when flying to Denver from Washington, D.C.. Booking flights from Washington, D.C. to Denver Intl (DEN) should be relatively easy as there are 25 daily inbound flights from Washington, D.C. from 0 different airlines.

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

    A quick flight from Washington, D.C. to Denver can take about 3h 50m. United Airlines provides one of the quickest options available for as low as £162. Airlines will cover a distance of 1448 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Before booking your flight to Denver from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Ethiopian Air (95%), Southwest (88%), Avianca( 88%).

  • 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 holiday 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, January is the cheapest month in which you can book a flight from Washington, D.C. to Denver (average of £51). Flying from Washington, D.C. to Denver in June is currently the most expensive (average of £130). 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

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

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 Denver from Washington, D.C..

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington, D.C. to Denver, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Washington, D.C. to Denver flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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