Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Washington, D.C. to Denver from £72

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. to Denver Intl are usually found in September or August, booked 77 days in advance, depart on a Friday 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 13 June 2025.

Round-trip from

£138

One-way from

£72

Popular in

December

Cheapest in

September

Average price

£226

Good one-way deal

£213 or less
United Airlines
  • United Airlines
  • 9/8-16/8
  • Nonstop
  • 7h 17m total
  • Washington, D.C. to Denver
American Airlines
  • American Airlines
  • 14/10
  • 1 total stop
  • 7h 39m total
  • Washington, D.C. to Denver
Highest demand for flights based on searches. 2% potential increase in price (£3 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Average for round-trip flights in June 2025
Price to beat on a one-way flight from Washington, D.C. (WAS) to Denver Intl.

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

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 13 June 2025.

Sat 9/820:06IAD - DEN
Nonstop3h 51mUnited Airlines
Sat 16/806:01DEN - IAD
Nonstop3h 26mUnited Airlines
Deal found 11/6£138
Wed 6/816:30DCA - DEN
1 stop5h 20mSouthwest
Mon 11/807:35DEN - DCA
1 stop4h 30mSouthwest
Deal found 12/6£138
Wed 24/907:00DCA - DEN
Nonstop4h 08mFrontier
Fri 26/916:34DEN - DCA
Nonstop3h 25mFrontier
Deal found 12/6£139
Wed 24/917:40IAD - DEN
1 stop6h 29mAmerican Airlines
Sat 27/914:45DEN - IAD
1 stop6h 04mAmerican Airlines
Deal found 11/6£144
Wed 24/909:59DCA - DEN
1 stop8h 42mAmerican Airlines
Sat 27/907:09DEN - DCA
1 stop6h 45mAmerican Airlines
Deal found 11/6£144
Tue 23/919:00DCA - DEN
1 stop6h 13mUnited Airlines
Sat 27/909:40DEN - DCA
Nonstop3h 27mUnited Airlines
Deal found 10/6£152
Sun 3/805:50IAD - DEN
Nonstop3h 40mSouthwest
Wed 6/808:20DEN - IAD
Nonstop3h 20mSouthwest
Deal found 10/6£166
Tue 15/717:23IAD - DEN
1 stop7h 43mDelta
Mon 28/700:55DEN - IAD
1 stop6h 04mDelta
Deal found 12/6£174
Tue 29/706:40DCA - DEN
1 stop5h 16mDelta
Mon 4/800:59DEN - DCA
1 stop6h 10mDelta
Deal found 11/6£174
Sat 12/712:40IAD - DEN
1 stop10h 16mSun Country Air
Sun 27/707:00DEN - IAD
1 stop27h 31mSun Country Air
Deal found 11/6£195
Thu 25/917:42DCA - DEN
1 stop7h 22mJetBlue
Sat 4/1011:25DEN - DCA
1 stop9h 31mJetBlue
Deal found 11/6£202
Wed 24/907:25IAD - DEN
1 stop14h 35mFrontier
Fri 26/900:04DEN - IAD
1 stop17h 17mFrontier
Deal found 11/6£233

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 13 June 2025.
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 9/8

20:06-21:57

Nonstop3h 51m

Denver Intl

Sat 16/8

06:01-11:27

Nonstop3h 26m

£138

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 6/8

16:30-19:50

1 stop5h 20m

Denver Intl

Mon 11/8

07:35-14:05

1 stop4h 30m

£138

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 24/9

07:00-09:08

Nonstop4h 08m

Denver Intl

Fri 26/9

16:34-21:59

Nonstop3h 25m

£139

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 24/9

17:40-22:09

1 stop6h 29m

Denver Intl

Sat 27/9

14:45-22:49

1 stop6h 04m

£144

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 24/9

09:59-16:41

1 stop8h 42m

Denver Intl

Sat 27/9

07:09-15:54

1 stop6h 45m

£144

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 23/9

19:00-23:13

1 stop6h 13m

Denver Intl

Sat 27/9

09:40-15:07

Nonstop3h 27m

£152

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 16/7

19:00-20:55

Nonstop3h 55m

Denver Intl

Sat 26/7

18:00-23:30

Nonstop3h 30m

£160

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 15/7

17:23-23:06

1 stop7h 43m

Denver Intl

Mon 28/7

00:55-08:59

1 stop6h 04m

£174

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 29/7

06:40-09:56

1 stop5h 16m

Denver Intl

Mon 4/8

00:59-09:09

1 stop6h 10m

£174

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 12/7

12:40-20:56

1 stop10h 16m

Denver Intl

Sun 27/7

07:00-12:31

1 stop27h 31m

£195

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 30 results
1
2
3

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 June 2025.

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 £667). Flying from Washington, D.C. to Denver in July is currently the most expensive (average of £1,030). 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 13 June 2025.

It’s typically best to fly out from Washington, D.C. to Denver at midday. Doing so could potentially save you 25% on the flight price compared to flying in the afternoon, 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 13 June 2025.

The most flights from WAS to DEN are scheduled on a Wednesday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 13.0 - 58.0 inches per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Denver when rainfall is around 13.0 mm.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated 13 June 2025.
To help decide which airline to fly from Washington, D.C. to Denver, see what other customers have to say about Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very Good

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 popular is this Washington, D.C. to Denver flight route?

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

    Our cheapest airline available from Washington, D.C. to Denver is United Airlines. Our recent data shows that you can find tickets from as low as £138 on this airline. Additional options worth looking into are Southwest and Frontier, starting at £138 and £139 round-trip. Users have found that United Airlines is 33% cheaper than the other options available to this destination.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as £72. Users have also found prices from £73 and £80 on Southwest and United Airlines, respectively.

  • 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: United Airlines (85%), Southwest (66%), Frontier( 46%).

  • 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 £667). Flying from Washington, D.C. to Denver in July is currently the most expensive (average of £1,030). 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
Winter Park
Frisco

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington, D.C. to Denver?

When you search for this flight from Washington, D.C. to Denver, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.