$89 Cheap United flights Washington (IAD) to Denver (DEN)

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$89 Cheap United flights Washington (IAD) to Denver (DEN)

Prices were available within the past 7 days and start at $89 for one-way flights and $175 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Jan 31 - Sun, Feb 1
IAD
Washington
DEN
Denver
$175 Roundtrip, found 22 hours ago
$175
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Jan 31 from Washington to Denver, returning Sun, Feb 1, priced at $175 found 22 hours ago
United
Wed, Feb 4 - Wed, Feb 11
IAD
Washington
DEN
Denver
$177 Roundtrip, found 2 hours ago
$177
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Feb 4 from Washington to Denver, returning Wed, Feb 11, priced at $177 found 2 hours ago
Flights from Washington (IAD) to Denver (DEN)
Origin airport
Washington Dulles Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Sun Country Airlines, United
Popular airline
United
Distance
1449 mi
Average flight time
2 hours 1 min

Frequently asked questions

How much is a United Airlines flight from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN)?
You can find cheap round-trip United Airlines flights from $175 from IAD to DEN by filtering your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $89 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from IAD to DEN with United Airlines?
United Airlines flights to Denver tend to be more affordable in the low-season months of January and November. Whether you need a round-trip or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN) with United Airlines?
Begin your search one to three months ahead of your travel date to score cheaper fares on United Airlines flights from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN)?
You can easily fly from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN) on one of United Airlines's 42 direct weekly flights. Use Expedia's "Nonstop" and "Airline" filters to find the United Airlines flight that'll get you to DEN at your preferred time.
How long does it take to fly from IAD to DEN with United Airlines?
Leave Washington Dulles Intl. Airport (IAD) for Denver Intl. Airport (DEN) on a nonstop United Airlines flight, and you'll be in the air for around 4h 4m.
Which day of the week has the most United Airlines flights from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN)?
United Airlines has the most flights from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN) on Monday. With up to 6 daily departures, you'll get the most options and flexibility on this day.
What is the earliest United Airlines flight from IAD to DEN?
The first flight from IAD to DEN with United Airlines leaves at 8:33AM UTC-5. You'll touch down at 10:35AM UTC-7. The final United Airlines flight of the day takes off at 10:05PM UTC-5 and arrives at 11:59PM UTC-7. With around 20% fewer cancellations for morning and mid-morning flights, jetting out early is generally the best choice.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Denver?
Denver Intl. Airport (DEN) is the primary Denver gateway for United Airlines flights from Washington Dulles Intl. Airport (IAD).
Why fly with United Airlines from IAD to DEN?
Travel from IAD to DEN with United Airlines and you'll enjoy a host of benefits starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN)?
You'll likely be onboard a Boeing 757-300 or a Boeing 737-900 when flying United Airlines from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN). However, keep in mind that a different aircraft may be assigned depending on operational demands.
Can I change or cancel my United Airlines flight from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN)?
Depending on the type of fare you purchased, a fee is typically charged if you modify or cancel your flight more than 24 hours after it's been confirmed. To secure plane tickets with more flexibility, select our "Changes included" or "No cancel fee" filter while looking for flights. For more details on changing or canceling your reservation, head to "Trips," select your flight and click on "Manage Booking."

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