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Denver

Find cheap United Airlines flights to Denver

RDU — DEN
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find United Airlines flight deals to Denver

Cheapest United Airlines flights from USA to Denver
Explore the most affordable United Airlines flight options available from USA to Denver. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:00 am
SEA
-
DEN
Nonstop2h 45m
United Airlines
Sun 8/239:03 pm
DEN
-
SEA
Nonstop3h 01m
United Airlines
Deal found 7/24$197
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am
SEA
-
DEN
Nonstop2h 45m
United Airlines
Wed 8/265:49 pm
DEN
-
SEA
1 stop6h 37m
United Airlines
Deal found 7/24$203
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:00 am
ORD
-
DEN
Nonstop2h 39m
United Airlines
Mon 8/177:10 pm
DEN
-
ORD
Nonstop2h 36m
United Airlines
Deal found 7/22$205

Flights to Denver with United Airlines at a glance

Find detailed information about United Airlines flights from USA to Denver. Explore the options provided by United Airlines to plan your journey from USA to Denver. Data last updated July 27, 2026.

Popular in

July

Cheapest in

January

Average price

$359

Round-trip from

$197

One-way from

$103

Good round-trip deal

$297 or less

Good one-way deal

$122 or less
Highest demand for flights to Denver with United Airlines; 11% potential price increase.
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Best time to find cheap flights to Denver with United Airlines; 1% potential price drop.
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Average price for flights to Denver with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 8/21-8/23
  • Nonstop
  • 5h 46m total
  • USA to Denver
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United Airlines
  • United Airlines
  • 9/7
  • Nonstop
  • 2h 39m total
  • USA to Denver
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Price to beat on a round-trip flight from the United States to Denver with United Airlines.
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Price to beat on a one-way flight from the United States to Denver with United Airlines.
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Cheapflights Insights

Find cheap United Airlines flights to Denver

How long is the flight to Denver with United Airlines?

On average, United Airlines flights from the United States to Denver take 3 hours 4 minutes. Flights to Denver from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

United Airlines weekly flight availability to Denver

The most flights to Denver operated by United Airlines are scheduled on a Sunday (621 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (527 on average).

When is the best time to book a flight to Denver with United Airlines?

The best time to book a flight to Denver with United Airlines is 28 days before departure. On average, fares are higher if you book on the same day as departure.

When is the cheapest time to fly to Denver with United Airlines?

Users looking for the cheapest United Airlines fares to Denver should consider flying on Wednesday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday evenings, when prices are usually at their highest.

FAQs about flights to Denver with United Airlines

  • Which airport do United Airlines flights arrive at when travelling to Denver?

    United Airlines flights on this route tend to land at Denver Intl Airport.

  • Is United Airlines the cheapest airline for a flight to Denver?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Denver tends to be with Southern / Mokulele.

  • Are there alternative airlines other than United Airlines that fly to Denver?

    Frontier, Southwest and Delta all fly to Denver and offer an alternative to United Airlines.

  • How much is a flight to Denver with United Airlines?

    The average price for a return flight with United Airlines is $381; with a one-way flight around $277.

See more FAQs

Reviews of United Airlines

See what Cheapflights users have to say about their United Airlines experience.
United Airlines
7.4
Good
10,000 reviews
Overview

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Popular United Airlines flights

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