Cheap Flight Tickets from Washington (IAD) to Denver (DEN), Starting at $178

Good to Know: Cheapest and Fastest IAD - DEN Flights

Useful information for finding best airline tickets from Washington Dulles International to Denver International on your next trip.

Cheapest Round Trip Flight

$178

AS Alaska Airlines • 1 stop • 15h 50m

Aug 05 – Aug 12

The cheapest round trip flight from Washington to Denver (IAD-DEN-IAD) is currently $178

🔍 Search Flights

Cheapest Direct Flight

$484

UA United Airlines • nonstop • 5h 52m

Aug 06

The cheapest nonstop flight from Washington to Denver (IAD-DEN) is currently $484

🔍 Search Flights

Fastest Flight

5h 52m

The fastest nonstop flight from Washington to Denver (IAD-DEN) takes 5h 52m

Top Airlines Flying from Washington to Denver

Delta Airline, DL

Delta Airlines

Alaska Airlines -AS

Alaska Airlines

American Airlines, AA

American Airlines

United Airlines, UA

United Airlines

Sun Country Airlines (SY)

Sun Country Airlines

Latest Flight Deals from Washington (IAD) to Denver (DEN)

Compare and book low fare round-trip air tickets from Washington to Denver. Ideal for travelers with confirmed return itineraries.

Aug 05 - Aug 12, Economy
AS
Washington → Denver
15h 50m
9:30 AM - 5:20 PM • 1 stop
AS
Washington → Denver
15h 4m
12:55 PM - 11:59 PM • 1 stop
$178
Alaska Airlines
Aug 05 - Aug 12, Economy
AS
Washington → Denver
21h 57m
6:03 AM - 5:20 PM • 1 stop
AS
Washington → Denver
17h 1m
6:18 PM - 6:39 AM • 1 stop
$202
Alaska Airlines
Aug 05 - Aug 12, Economy
DL
Washington → Denver
10h 45m
6:49 PM - 11:34 PM • 1 stop
DL
Washington → Denver
12h 3m
7:19 AM - 4:42 PM • 1 stop
$528
Delta Airlines
Aug 05 - Aug 12, Economy
DL
Washington → Denver
13h 44m
8:28 AM - 2:52 PM • 1 stop
DL
Washington → Denver
10h 5m
6:00 AM - 2:05 PM • 1 stop
$528
Delta Airlines
Aug 05 - Aug 12, Economy
DL
Washington → Denver
9h 2m
6:10 AM - 9:52 AM • 1 stop
DL
Washington → Denver
13h 46m
9:39 AM - 8:05 PM • 1 stop
$528
Delta Airlines
Aug 05 - Aug 12, Economy
DL
Washington → Denver
10h 49m
8:28 AM - 1:17 PM • 1 stop
DL
Washington → Denver
10h 5m
6:00 AM - 2:05 PM • 1 stop
$528
Delta Airlines

Fly from Washington to Denver with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Washington to Denver? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Washington to Denver Flights

What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from IAD to DEN?
The most popular airline flying from Washington to Denver are
Can I fly from IAD to DEN non-stop?
Yes, you can fly IAD to DEN non-stop on
Which airlines fly nonstop between Washington and Denver?
The non-stop flights between Washington and Denver are .
What’s the earliest departure time from IAD to DEN Airport?
The earliest flight leaves IAD at 6:00 am and lands in DEN - Denver International
What are the airports in Denver?
DEN
Can I make changes to my Washington to Denver flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from IAD to DEN?
Read the fare rules of the Washington to Denver air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Washington and Denver?
operate flights between Washington and Denver
How long does a flight from Washington to Denver take?
It takes approximately 4 hour to fly non-stop from IAD to DEN, which is 1452.42 miles by air.
Which airlines provide the cheapest flights from Washington (IAD) to Denver (DEN) ?
In the past couple of days, the cheapest tickets to DEN from IAD were found on DL : USD 528
Do I need a passport to fly between IAD and DEN?
No
What’s the latest departure time from IAD to DEN ?
The last flight leaves IAD at 7:26 pm

Washington (IAD) to Denver (DEN): Airport Information

Origin Airport Washington Dulles International , Washington, US
Destination Airport Denver International , Denver, US
Distance 1452 miles

More Flight Options for Washington (IAD) and Denver (DEN)

Why Fareleaders for IAD to DEN Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Washington to Denver flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on IAD to DEN flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Washington to Denver flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the Washington (IAD) to Denver (DEN)
Terms and Conditions*