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Cheap Flights from Denver to Washington D.C.

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Compare Denver to Washington D.C. flight deals

Find the cheapest month or even day of the year to fly to Washington D.C.

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Flight deals from Denver to Washington D.C.

Looking for a cheap last-minute deal or the best return flight from Denver to Washington D.C.? Find the lowest prices on one-way and return tickets right here.
Washington D.C..$283 per passenger.Departing Fri, 25 Apr, returning Mon, 28 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Fri, 25 Apr, arriving in Baltimore Washington International.Inbound direct flight with Frontier Airlines departs from Baltimore Washington International on Mon, 28 Apr, arriving in Denver International.Price includes taxes and charges.From $283, select.
Washington D.C..$309 per passenger.Departing Wed, 21 May, returning Sat, 24 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 21 May, arriving in Washington Ronald Reagan.Inbound direct flight with Frontier Airlines departs from Washington Ronald Reagan on Sat, 24 May, arriving in Denver International.Price includes taxes and charges.From $309, select.
Washington D.C..$317 per passenger.Departing Tue, 15 Jul, returning Sat, 2 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Tue, 15 Jul, arriving in Washington Ronald Reagan.Inbound direct flight with Frontier Airlines departs from Washington Ronald Reagan on Sat, 2 Aug, arriving in Denver International.Price includes taxes and charges.From $317, select.
Washington D.C..$317 per passenger.Departing Wed, 18 Jun, returning Tue, 15 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 18 Jun, arriving in Washington Ronald Reagan.Inbound direct flight with Frontier Airlines departs from Washington Ronald Reagan on Tue, 15 Jul, arriving in Denver International.Price includes taxes and charges.From $317, select.
Washington D.C..$317 per passenger.Departing Wed, 4 Jun, returning Wed, 11 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 4 Jun, arriving in Washington Ronald Reagan.Inbound direct flight with Frontier Airlines departs from Washington Ronald Reagan on Wed, 11 Jun, arriving in Denver International.Price includes taxes and charges.From $317, select.
Washington D.C..$318 per passenger.Departing Sat, 26 Apr, returning Sat, 3 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Sat, 26 Apr, arriving in Washington Ronald Reagan.Inbound direct flight with Frontier Airlines departs from Washington Ronald Reagan on Sat, 3 May, arriving in Denver International.Price includes taxes and charges.From $318, select.
Washington D.C..$344 per passenger.Departing Tue, 8 Jul, returning Tue, 15 Jul.Return flight with United.Outbound direct flight with United departs from Denver International on Tue, 8 Jul, arriving in Baltimore Washington International.Inbound direct flight with United departs from Baltimore Washington International on Tue, 15 Jul, arriving in Denver International.Price includes taxes and charges.From $344, select.
Washington D.C..$365 per passenger.Departing Sun, 30 Mar, returning Sat, 19 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Sun, 30 Mar, arriving in Washington Ronald Reagan.Inbound direct flight with Frontier Airlines departs from Washington Ronald Reagan on Sat, 19 Apr, arriving in Denver International.Price includes taxes and charges.From $365, select.

Find the cheapest month to fly from Denver to Washington D.C.

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to Washington D.C. flights are currently cheapest in April.
Mar
from $412
Apr
from $283
May
from $309
Jun
from $317
Jul
from $344
Aug
from $375
Sep
from $375
Oct
from $375
Nov
from $375
Dec
from $375
Jan
Find prices
Feb
Find prices

Direct flights from Denver to Washington D.C.

Alternative Denver to Washington D.C. routes

Looking for the cheapest, fastest or easiest route from Denver to Washington D.C.? You could fly into the following airports instead.

Denver to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight found$283
Cheapest month to flyApril
Average flight time3 hrs, 24 mins
Most popular airlineSouthwest Airlines
Average flights per week389

Finding cheap flights from Denver to Washington D.C.: Frequently asked questions

There are 5 airports in Washington D.C.: Washington Ronald Reagan, Camp Springs Andrews AFB, Washington Dulles, Baltimore Washington International, and Manassas.
The best price we found for a return flight from Denver to Washington D.C. is $283. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 23 minutes is the average flight time from Denver to Washington D.C..
Southwest Airlines, United and Copa fly direct from Denver to Washington D.C..
As of March 2025, there are 389 flights per week flying from Denver to Washington D.C..
The cheapest month to fly from Denver to Washington D.C. is usually March 2025.
If you're flying from Denver, the cheapest airport near Washington D.C. is Baltimore Washington International – which is 43.6 km away from the centre of Washington D.C.. We've found flights into this airport from $283.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Washington D.C. on Friday, 25 April 2025.
Yes – the average flight time is 3 hours and 23 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington D.C. but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 6°C. July is typically the warmest month in Washington D.C., when it usually averages around 31°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -4°C. The rainiest month is September.
The cheapest airline that flies to Washington D.C. is Frontier Airlines .

Flying from Denver to Washington DC: what you need to know

  • All great adventures start from Denver's main airport, Denver International Airport (DEN). Explore your options for reserving a flight from Denver to Washington DC leaving from this base.

  • Ronald Reagan National Airport (DCA) and Washington Dulles International Airport (IAD) are the key hubs in Washington DC.

  • The average duration of a direct flight from Denver to Washington DC is 3 hours 22 minutes. Washington DC's timezone is UTC-4, making Washington DC 2 hours ahead of Denver.

  • The busiest route for flights from Denver to Washington DC is from Denver International Airport (DEN) to Washington Dulles International Airport (IAD). There are 77 services every week between these two airports. If you'd like to get going as soon as possible, the earliest flight from DEN to IAD is the 06:00 United Airlines option. If you have other commitments or plans on your day of travel, the last departure is at 23:59 with United Airlines.

  • To ensure you get on your flight from Denver to Washington DC, allow plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Longer lines at security and check-in are likely if you're travelling during high season, so give yourself a bit more breathing room. A good rule for peak periods? Arrive up to four hours ahead for international flights and two hours for domestic departures.

  • You won't need a visa or passport to travel within United States. You will need a valid proof of identity though, such as an ID card or driver's licence. Add them to your packing checklist once you've booked cheap flights from Denver to Washington DC.

Flying from Denver

Denver International Airport (DEN)

  • You can book a nonstop flight from Denver to Washington DC leaving from Denver International Airport (DEN). Board your plane at DEN and then come in for landing at any of these Washington DC airports:

    • Ronald Reagan National Airport (DCA)

    • Washington Dulles International Airport (IAD)

    • Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • You can book a direct flight from Denver to Washington DC with United Airlines. This top carrier operates services from DEN.

  • Stopovers are the ideal opportunity to break up your trip — and possibly even explore a different city. When browsing flights from Denver to Washington DC departing from Denver International Airport, deselect the 'Direct flights only' box to see where you can stop along the way. Consider one of these popular options:

    • Kansas City International Airport (MCI)

    • Detroit Metropolitan Wayne County Airport (DTW)

    • General Mitchell International Airport (MKE)

  • Located around 40 kilometres from the centre of Denver, DEN can be reached in about 34 minutes by car, depending on traffic. The journey on public transport will take roughly 1 hour and 31 minutes.

  • Need a hotel to stay at before your flight from Denver to Washington DC? Consider SpringHill Suites Denver Airport. Get a good night's sleep here before heading to Denver International Airport.

Arriving in Washington DC

Ronald Reagan National Airport (DCA)

  • Ronald Reagan National Airport (DCA) to the centre of Washington DC is around 16 minutes by car. It's approximately 8 kilometres away.

  • It takes around 43 minutes when travelling by public transport.

  • Consider booking a hotel near DCA if you're taking a late flight from Denver to Washington DC. Check in to one of these options and avoid the hassle of a long transfer:

Washington Dulles International Airport (IAD)

How to find the cheapest flights from Denver to Washington DC

  • The lowest price we've seen for a one-way ticket from Denver to Washington DC is $142. For a return flight on this route, the best price is $283. Depending on how early you book and the availability, these fares may change.

  • To score cheap tickets from Denver to Washington DC, book your journey 8 months before your planned departure.

  • April is the cheapest month for flight tickets from Denver to Washington DC. If you'd like to travel at a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • Set up a Price Alert for cheap tickets from Denver to Washington DC. You don't need to check back in every day to find out if prices have dropped. We'll notify you as soon as the price changes.

  • Tailor your flights using filters. Choose your preferred departure and arrival times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest' flights from Denver to Washington DC.

Best time to go to Washington DC

  • July is the most popular month for flights from Denver to Washington DC. To travel when it's less crowded, visit Washington DC in May.

  • Before booking a flight from Denver to Washington DC, think about the kind of weather you like best. July is the warmest month in Washington DC, with the temperature ranging from 19ºC to 33ºC.

  • January sees average temperatures of between -6ºC and 10ºC. Search for cheap tickets from Denver to Washington DC around that time if you like travelling in cooler conditions.

More about Washington DC

  • When it comes to searching for somewhere to rest your head, you'll find the best stays in Washington DC right here. Check out these hotels as soon as you've booked your flight from Denver to Washington DC:

  • All great adventures should include some sightseeing. White House Historical Association, The White House and National Mall are must-do's during your Washington DC adventure.

Complete your Washington DC trip with a car rental

  • Finding you a cheap flight from Denver to Washington DC isn't the only thing we're good at. Check out our car rentals in Washington DC and travel at your own pace. We search for deals from trusted car rental companies and put them all in one place. You can instantly compare rates and then book with no fees.

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Plan the rest of your trip from Denver to Washington D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.