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Cheap flights from Washington, D.C. to Denver from £81

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
13 Feb — 20 Feb1
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 76 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 14 January 2026.

Round-trip from

£132

One-way from

£81

Popular in

December

Cheapest in

January

Average price

£176

Good one-way deal

£572 or less
United Airlines
  • United Airlines
  • 14/2-21/2
  • Nonstop
  • 7h 40m total
  • Washington, D.C. to Denver
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Southwest
  • Southwest
  • 1/3
  • Nonstop
  • 4h 00m total
  • Washington, D.C. to Denver
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£2 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Denver Intl.
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Find 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 14 January 2026.

Sat 21/205:05
IAD
-
DEN
Nonstop4h 00m
Southwest
Tue 24/210:35
DEN
-
IAD
Nonstop3h 15m
Southwest
Deal found 13/1£132
Sun 15/219:42
IAD
-
DEN
Nonstop4h 05m
United Airlines
Sat 21/206:00
DEN
-
IAD
Nonstop3h 20m
United Airlines
Deal found 14/1£147
Tue 17/217:10
IAD
-
DEN
Nonstop4h 21m
United Airlines
Mon 23/223:59
DEN
-
IAD
Nonstop3h 19m
United Airlines
Deal found 13/1£159
Wed 4/217:15
IAD
-
DEN
Nonstop4h 11m
United Airlines
Sun 15/206:00
DEN
-
IAD
Nonstop3h 20m
United Airlines
Deal found 13/1£161
Sun 15/216:11
DCA
-
DEN
Nonstop4h 18m
United Airlines
Thu 19/209:35
DEN
-
DCA
Nonstop3h 24m
United Airlines
Deal found 13/1£161
Tue 24/206:00
DCA
-
DEN
1 stop7h 10m
JetBlue
Wed 25/223:15
DEN
-
DCA
1 stop6h 48m
JetBlue
Deal found 13/1£163
Sat 21/205:05
IAD
-
DEN
Nonstop4h 00m
Southwest
Thu 26/207:55
DEN
-
IAD
1 stop8h 25m
Southwest
Deal found 13/1£169
Sat 7/217:00
DCA
-
DEN
1 stop7h 46m
Delta
Sat 14/207:05
DEN
-
DCA
1 stop5h 33m
Delta
Deal found 14/1£169
Sat 7/207:00
IAD
-
DEN
2 stops9h 45m
Southwest
Sat 14/216:35
DEN
-
IAD
Nonstop3h 10m
Southwest
Deal found 13/1£170
Wed 4/217:30
IAD
-
DEN
Nonstop4h 05m
Southwest
Sun 8/216:45
DEN
-
IAD
Nonstop3h 10m
Southwest
Deal found 13/1£176
Sat 14/215:10
DCA
-
DEN
1 stop6h 55m
Delta
Tue 17/206:00
DEN
-
DCA
1 stop8h 27m
Delta
Deal found 13/1£176
Sun 1/206:00
DCA
-
DEN
1 stop6h 42m
JetBlue
Fri 6/211:35
DEN
-
DCA
1 stop9h 24m
JetBlue
Deal found 13/1£177

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 14 January 2026.
Use the filters below to find and compare flights from Washington, D.C. to Denver that are best for you.

Fly from

Washington, D.C.

Fly to

Denver

Route

Depart

Return

Price

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 7/2

17:15-19:26

Nonstop4h 11m

Denver Intl

Tue 31/3

07:45-13:14

Nonstop3h 29m

£161

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 18/3

07:15-12:22

1 stop7h 07m

Denver Intl

Mon 23/3

22:44-08:01

1 stop7h 17m

£163

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 11/6

08:30-13:33

1 stop7h 03m

Denver Intl

Sun 14/6

22:34-09:06

1 stop8h 32m

£163

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 24/2

06:00-11:10

1 stop7h 10m

Denver Intl

Tue 24/2

23:15-11:05

1 stop9h 50m

£163

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 20/2

15:25-22:30

1 stop9h 05m

Denver Intl

Tue 24/2

16:45-21:55

Nonstop3h 10m

£169

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 14/2

15:10-20:05

1 stop6h 55m

Denver Intl

Mon 23/2

00:59-09:10

1 stop6h 11m

£176

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 6/2

05:30-07:30

Nonstop4h 00m

Denver Intl

Fri 13/2

17:50-23:10

Nonstop3h 20m

£176

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 14/3

15:55-21:44

1 stop7h 49m

Denver Intl

Thu 19/3

22:44-08:01

1 stop7h 17m

£179

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 18/6

12:40-18:09

1 stop7h 29m

Denver Intl

Mon 22/6

10:07-19:46

1 stop7h 39m

£182

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 18/2

19:35-00:23

1 stop6h 48m

Denver Intl

Fri 27/2

14:45-00:21

1 stop7h 36m

£184

Flights are sorted by cheapest return flights first.

Deals found on 13/1

Showing 1-10 of 45 results
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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 9 January 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 76 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 £57). Flying from Washington, D.C. to Denver in June is currently the most expensive (average of £129). 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 14 January 2026.

It’s typically best to fly out from Washington, D.C. to Denver in the afternoon. Doing so could potentially save you 32% 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 14 January 2026.

The most flights from WAS to DEN are scheduled on a Monday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 14% 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 21 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 4h. Southwest provides one of the quickest options available for as low as £176. 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 (89%), Avianca (88%), Copa Airlines( 87%).

  • 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 £57). Flying from Washington, D.C. to Denver in June is currently the most expensive (average of £129). 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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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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