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Flight tickets from Denver International to Washington Dulles

Compare Denver International to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Denver International to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Denver International Airport to Washington Dulles Airport? If you want to travel next month, return fares start from ₹ 19,919. Find the lowest prices on one-way and return tickets right here.
Washington D.C..₹ 7,366 per passenger.Departing Wed, 10 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Wed, 10 Jun, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 7,366, select.
Washington D.C..₹ 7,387 per passenger.Departing Tue, 26 May.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 26 May, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 7,387, select.
Washington D.C..₹ 11,815 per passenger.Departing Sun, 2 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Sun, 2 Aug, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 11,815, select.
Washington D.C..₹ 11,851 per passenger.Departing Fri, 17 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 17 Jul, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 11,851, select.
Washington D.C..₹ 13,165 per passenger.Departing Wed, 20 May.One-way flight with United.Outbound direct flight with United departs from Denver International on Wed, 20 May, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 13,165, select.
Washington D.C..₹ 15,669 per passenger.Departing Tue, 24 Nov.One-way flight with Sun Country Airlines.Outbound indirect flight with Sun Country Airlines, departs from Denver International on Tue, 24 Nov, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 15,669, select.
Washington D.C..₹ 16,916 per passenger.Departing Tue, 9 Jun.One-way flight with United.Outbound direct flight with United departs from Denver International on Tue, 9 Jun, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 16,916, select.
Washington D.C..₹ 16,926 per passenger.Departing Wed, 9 Sep.One-way flight with United.Outbound direct flight with United departs from Denver International on Wed, 9 Sep, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 16,926, select.
Washington D.C..₹ 21,137 per passenger.Departing Tue, 11 Aug.One-way flight with United.Outbound direct flight with United departs from Denver International on Tue, 11 Aug, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 21,137, select.
Washington D.C..₹ 21,721 per passenger.Departing Mon, 15 Feb.One-way flight with United.Outbound direct flight with United departs from Denver International on Mon, 15 Feb, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 21,721, select.
Washington D.C..₹ 21,721 per passenger.Departing Wed, 21 Oct.One-way flight with United.Outbound direct flight with United departs from Denver International on Wed, 21 Oct, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 21,721, select.
Washington D.C..₹ 21,752 per passenger.Departing Thu, 9 Jul.One-way flight with United.Outbound direct flight with United departs from Denver International on Thu, 9 Jul, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 21,752, select.
Washington D.C..₹ 25,974 per passenger.Departing Tue, 24 Nov.One-way flight with United.Outbound direct flight with United departs from Denver International on Tue, 24 Nov, arriving in Washington Dulles.Price includes taxes and charges.From ₹ 25,974, select.

Find the cheapest month to fly from Denver International to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to Washington Dulles flights are currently cheapest in June.
May
from ₹ 7,387
Jun
from ₹ 7,366
Jul
from ₹ 11,851
Aug
from ₹ 11,815
Sep
from ₹ 16,926
Oct
from ₹ 21,721
Nov
from ₹ 15,669
Dec
Find prices
Jan
Find prices
Feb
from ₹ 21,721
Mar
Find prices
Apr
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Direct flights from Denver International to Washington Dulles

Denver International to Washington Dulles: Alternative routes

Compare routes from Denver International to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

Washington Ronald Reagan

5km from central Washington D.C.
Closest
from ₹ 9,890
Search flights

Camp Springs Andrews AFB

17km from central Washington D.C.
Search flights

Washington Dulles

37km from central Washington D.C.
Cheapest
from ₹ 7,366
Search flights

Baltimore Washington International

44km from central Washington D.C.
Cheapest
from ₹ 7,366
Search flights

Manassas

47km from central Washington D.C.
Search flights

Denver to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight found₹ 7,366
Cheapest month to flyJune
Average flight time3 hrs, 26 mins
Most popular airlineUnited
Average flights per week178

Finding cheap flights from Denver International to Washington Dulles: Frequently asked questions

The best price we found for a return flight from Denver International to Washington Dulles is ₹ 15,916. 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 26 minutes is the average flight time from Denver International to Washington Dulles.
United, Copa and Brussels Airlines fly direct from Denver International to Washington Dulles.
As of May 2026, there are 178 flights per week flying from Denver International to Washington Dulles.
The cheapest month to fly from Denver International to Washington Dulles is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to Washington Dulles Airport on Wednesday, 27 May 2026.
Yes – the average flight time is 3 hours and 26 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 Dulles 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.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Washington Dulles.

Travelling from Denver International Airport (DEN) to Washington Dulles International Airport (IAD): what you need to know

  • Jump on a direct flight from Denver International Airport to Washington Dulles International Airport and you'll be in the air for an average of 3 hours 20 minutes.

  • Washington DC is two hours ahead of Denver and observes the UTC-4 timezone.

  • Flights from DEN to IAD start at 06:00 — the first with United Airlines. The last departure is at 23:59 with United Airlines. In total, there are 77 weekly Denver International Airport to Washington Dulles International Airport flights.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your DEN to IAD flight.

  • Flying during a peak month like July? School holidays and other popular seasons can result in longer lines and delays at airport checkpoints. Play things extra safe and get there up to four hours ahead of international flights and two hours before a domestic departure.

  • United Airlines has direct flights from Denver International Airport to Washington Dulles International Airport. Book with this popular carrier, then get ready to tick off the sights in Washington DC — and maybe even more of United States if your schedule allows.

  • The airline that passengers book most often on this route is United Airlines.

  • United Airlines is the most punctual carrier operating DEN to IAD flights. An impressive 87.63% of its services on this route arrive on time.

  • Think about adding a stopover when booking your ticket from Denver International Airport to Washington Dulles International Airport. Simply deselect 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Check out these options between DEN and IAD:

    • Detroit Metropolitan Wayne County Airport

    • Cincinnati/Northern Kentucky Airport

    • Pittsburgh International Airport

How to find the cheapest flights from Denver International Airport (DEN) to Washington Dulles International Airport (IAD)

  • The lowest price we've seen for a one-way Denver International Airport to Washington Dulles International Airport flight is ₹ 7,366. A round-trip ticket is currently ₹ 15,916. Depending on the availability and when you book, these fares may change.

  • Get cheap tickets from DEN to IAD by booking five months ahead. Based on our research, that's the sweet spot for finding the biggest deals.

  • The cheapest month for flights from Denver International Airport to Washington Dulles International Airport is April. Use the 'Whole month' tool to see the lowest airfares if you have flexible travel dates.

  • Save time searching for cheap flights from DEN to IAD by creating a Price Alert. You'll get an email or notification on the app when fares go down.

  • Choose your ideal departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Denver International Airport to Washington Dulles International Airport.

Handy information about Denver International Airport (DEN)

  • DEN's address is 8500 Pena Boulevard.

  • Denver International Airport maintains a solid on-time performance, making delays less likely. Departures from DEN land on schedule 80.23% of the time.

  • Central Denver to Denver International Airport is around 40 kilometres. Depending on traffic, it'll take you about 35 minutes to get there if you're driving, catching a cab or ride-sharing.

  • Catching public transport? Expect a journey time of around 1 hour 30 minutes.

  • Get your flight from Denver International Airport to Washington Dulles International Airport off to a relaxed start. Only a quick drive from DEN, stay at Baymont by Wyndham Denver International Airport and be well-rested for the journey ahead.

Arriving at Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • You'll find IAD at 1 Saarinen Circle.

  • Washington Dulles International Airport is roughly 56 kilometres from the centre of Washington DC. The drive time takes about 50 minutes.

  • If you're travelling on public transport, expect a journey of about 3 hours 25 minutes.

When to fly to Washington Dulles International Airport (IAD)

  • It's time to work out your dates for your flight from Denver International Airport to Washington Dulles International Airport. April is the most popular month to visit Washington DC. If you want a more low-key vibe, go in January.

  • Book your flight from Denver International Airport to Washington Dulles International Airport for July if you'd like to explore Washington DC during its warmest month. Expect temperatures of between 19ºC and 33ºC.

  • Look for cheap tickets from DEN to IAD in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between -6ºC and 10ºC on average.

Explore more of United States

  • New York is just one of the many places in United States waiting to be explored once you've seen Washington DC. Around 322 kilometres away to the north-east, popular attractions include Statue of Liberty, Central Park and Empire State Building.

  • Philadelphia is another favourite destination in United States and is around 193 kilometres north-east of Washington DC. No journey is complete without seeing Liberty Bell, Independence Hall and Philadelphia Museum of Art.

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.