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Find cheap United Airlines flights to Knoxville

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

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

This United Airlines deal was found by Cheapflights users on 7/23. 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 8/2010:15 pm
IAD
-
TYS
Nonstop1h 44m
United Airlines
Thu 8/275:45 am
TYS
-
IAD
Nonstop1h 40m
United Airlines
Deal found 7/23$185
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Mon 8/1710:15 pm
IAD
-
TYS
Nonstop1h 44m
United Airlines
Sat 8/225:45 am
TYS
-
IAD
Nonstop1h 40m
United Airlines
Deal found 7/27$193
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.
Wed 8/1210:15 pm
IAD
-
TYS
Nonstop1h 44m
United Airlines
Mon 8/175:45 am
TYS
-
IAD
Nonstop1h 40m
United Airlines
Deal found 7/22$215

Flights to Knoxville with United Airlines at a glance

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

Popular in

June

Cheapest in

October

Average price

$385

Round-trip from

$185

One-way from

$125

Good round-trip deal

$264 or less
Highest demand for flights to Knoxville with United Airlines; 10% potential price increase.
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Best time to find cheap flights to Knoxville with United Airlines; 1% potential price drop.
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Average price for flights to Knoxville with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 8/20-8/27
  • Nonstop
  • 3h 24m total
  • USA to Knoxville
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United Airlines
  • United Airlines
  • 8/22
  • 1 total stop
  • 6h 49m total
  • USA to Knoxville
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Price to beat on a round-trip flight from the United States to Knoxville with United Airlines.
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Cheapflights Insights

Find cheap United Airlines flights to Knoxville

How long is the flight to Knoxville with United Airlines?

On average, United Airlines flights from the United States to Knoxville take 1 hour 48 minutes. Flights to Knoxville 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 Knoxville

The most flights to Knoxville operated by United Airlines are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

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

The best time to book a flight to Knoxville with United Airlines is 30 days before departure. On average, fares are higher if you book 88 days before departure.

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

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

FAQs about flights to Knoxville with United Airlines

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

    United Airlines flights on this route tend to land at Knoxville McGhee Tyson Airport.

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

    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 Knoxville tends to be with Avelo Airlines.

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

    American Airlines, Allegiant Air and Delta all fly to Knoxville and offer an alternative to United Airlines.

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

    The average price for a return flight with United Airlines is $459; with a one-way flight around $302.

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

Boarding

7.7

Crew

8.1

Food

6.6

Popular United Airlines flights

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