Cheap Flights from Phoenix to Knoxville from $227

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Flight deals from Phoenix to Knoxville

Looking for a cheap last-minute deal or the best return flight from Phoenix to Knoxville Airport? If you want to travel next month, return fares start from $482. Find the lowest prices on one-way and return tickets right here.

Knoxville.$227 per passenger.Departing Sun, 9 Aug, returning Sun, 23 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Sun, 9 Aug, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Sun, 23 Aug, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $227, select.

Knoxville.$264 per passenger.Departing Thu, 30 Jul, returning Thu, 13 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Thu, 30 Jul, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 13 Aug, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $264, select.

Knoxville.$296 per passenger.Departing Thu, 27 Aug, returning Thu, 10 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Thu, 27 Aug, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 10 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $296, select.

Knoxville.$297 per passenger.Departing Sun, 6 Sep, returning Thu, 10 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Sun, 6 Sep, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 10 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $297, select.

Knoxville.$309 per passenger.Departing Sun, 15 Nov, returning Sun, 6 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Sun, 15 Nov, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Sun, 6 Dec, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $309, select.

Knoxville.$322 per passenger.Departing Thu, 3 Dec, returning Sun, 6 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Thu, 3 Dec, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Sun, 6 Dec, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $322, select.

Knoxville.$326 per passenger.Departing Mon, 19 Oct, returning Sun, 8 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Mon, 19 Oct, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Sun, 8 Nov, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $326, select.

Knoxville.$327 per passenger.Departing Mon, 19 Oct, returning Thu, 29 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Mon, 19 Oct, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 29 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $327, select.

Knoxville.$340 per passenger.Departing Thu, 5 Nov, returning Sun, 8 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Thu, 5 Nov, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Sun, 8 Nov, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $340, select.

Knoxville.$340 per passenger.Departing Sun, 13 Sep, returning Sun, 4 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Sun, 13 Sep, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Sun, 4 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $340, select.

Knoxville.$354 per passenger.Departing Thu, 3 Dec, returning Thu, 21 Jan.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Thu, 3 Dec, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 21 Jan, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $354, select.

Knoxville.$422 per passenger.Departing Sun, 17 Jan, returning Thu, 21 Jan.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Sun, 17 Jan, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 21 Jan, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $422, select.

Knoxville.$482 per passenger.Departing Thu, 23 Jul, returning Thu, 30 Jul.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Thu, 23 Jul, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 30 Jul, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $482, select.

Knoxville.$676 per passenger.Departing Fri, 26 Jun, returning Mon, 29 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Fri, 26 Jun, arriving in Knoxville.Inbound indirect flight with Frontier Airlines, departs from Knoxville on Mon, 29 Jun, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $676, select.

Knoxville.$761 per passenger.Departing Sun, 21 Jun, returning Thu, 2 Jul.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Phoenix Sky Harbor on Sun, 21 Jun, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 2 Jul, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $761, select.

Knoxville.$835 per passenger.Departing Thu, 11 Feb, returning Mon, 15 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Phoenix Sky Harbor on Thu, 11 Feb, arriving in Knoxville.Inbound indirect flight with Delta, departs from Knoxville on Mon, 15 Feb, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $835, select.

Find the cheapest month to fly from Phoenix to Knoxville

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Phoenix to Knoxville flights are currently cheapest in August.

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Direct flights from Phoenix to Knoxville

Phoenix to Knoxville: Alternative routes

Compare routes from Phoenix to Knoxville below. You may find an airport to fly into that's cheaper, faster, or easier than Knoxville.

Knoxville

18km from central Knoxville

ClosestCheapest

from $227

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Phoenix to Knoxville: Flight information

The things to know before you go.

Cheapest flight found	$227
Cheapest month to fly	August
Average flight time	3 hrs, 28 mins
Most popular airline	Allegiant Air
Average flights per week	3

Finding cheap flights from Phoenix to Knoxville: Frequently asked questions

How much are return flights from Phoenix to Knoxville?

The best price we found for a return flight from Phoenix to Knoxville is $227. 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.

How long does it take to fly from Phoenix to Knoxville?

3 hours and 28 minutes is the average flight time from Phoenix to Knoxville.

Which airlines fly direct from Phoenix to Knoxville?

Allegiant Air flies direct from Phoenix to Knoxville.

How many flights are there a week from Phoenix to Knoxville?

As of June 2026, there are 3 flights per week flying from Phoenix to Knoxville.

When is the cheapest time to fly from Phoenix to Knoxville?

The cheapest month to fly from Phoenix to Knoxville is usually August.

Which upcoming date is cheapest to fly from Phoenix to Knoxville Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Phoenix to Knoxville Airport on Sunday, 9 August 2026.

Can I get a direct flight from Phoenix to Knoxville Airport?

Yes – the average flight time is 3 hours and 28 minutes.

How can I find the best flight deal to Knoxville?

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 Knoxville 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.

When is the best time to book flights to Knoxville?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Knoxville is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Phoenix to Knoxville with?

The cheapest airline that flies to Knoxville is Allegiant Air .

Flying from Phoenix to Knoxville McGhee Tyson Airport (TYS): What you need to know

Your trip gets off the ground at Phoenix's main airport, Phoenix Sky Harbour International Airport (PHX). Check out your options for reserving a flight from Phoenix to Knoxville McGhee Tyson Airport (TYS) departing from this base.
The average length of a direct Phoenix to Knoxville McGhee Tyson Airport flight is 3 hours 30 minutes.
Knoxville is two hours ahead of Phoenix. Knoxville McGhee Tyson Airport is located in Knoxville, which runs on the UTC-5 timezone.
Leave enough time to catch your flight from Phoenix to TYS. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.
Getting on a plane during a peak month like March? Busy periods (like Christmas/New Year and spring break) can easily add another hour at check-in and security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before a domestic departure.

Airports in Phoenix

Phoenix Sky Harbour International Airport (PHX)

You can take a direct flight from Phoenix to Knoxville McGhee Tyson Airport (TYS) leaving from Phoenix Sky Harbour International Airport (PHX).
When leaving from PHX, you can catch a direct flight from Phoenix to Knoxville McGhee Tyson Airport with Allegiant Air.
Allegiant Air ranks first in bookings for flights from PHX to TYS.
Allegiant Air is the most punctual carrier on this route, with 74.42% of its services arriving as planned.
PHX is about 5 kilometres from central Phoenix. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 10 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the journey time to be around 25 minutes.
Searching for a convenient hotel near Phoenix Sky Harbour International Airport? If you're catching an early flight from Phoenix to Knoxville McGhee Tyson Airport, these stays will have you sleeping moments from your departure gate:
Phoenix Sky Harbour International Airport gets top marks for its on-time performance. 80% of flights that take off from PHX arrive at their destination without delay.
You'll find PHX at 3400 Sky Harbour Boulevard.

Phoenix-Mesa Gateway Airport (AZA)

AZA is about 32 kilometres from central Phoenix. It'll take you 30 minutes or so to get to the airport by car from the city centre. Public transport takes roughly 1 hour 15 minutes.
Get your holiday started early with an extra night away from home. Before your Phoenix to TYS flight, unwind in one of these hotels close to Phoenix-Mesa Gateway Airport:
Phoenix-Mesa Gateway Airport has a reputation for reliability and timeliness. 82% of flights out of here arrive right on target.
The address for AZA is 6033 S. Sossaman Rd..

About Knoxville McGhee Tyson Airport (TYS)

The last thing you want is a long journey to your hotel if you're getting in late on a flight from Phoenix to Knoxville McGhee Tyson Airport. Check in to one of these accommodation options near TYS instead:
To lock in the lowest price, reserve your vehicle around three weeks in advance of your Phoenix to Knoxville McGhee Tyson Airport flight.
You'll find TYS at 2055 Alcoa Highway.

Getting from Knoxville McGhee Tyson Airport (TYS) to central Knoxville

Central Knoxville is around 24 kilometres from Knoxville McGhee Tyson Airport and takes about 25 minutes to reach by car. Explore your options for getting into the city, whether that's with a car hire, taxi or ride-share.
Travelling on public transport takes roughly 50 minutes.

How to find the cheapest flights from Phoenix to Knoxville McGhee Tyson Airport (TYS)

$113 is currently the best price for a one-way ticket from Phoenix to Knoxville McGhee Tyson Airport. A return flight starts at $227. These prices may change depending on demand.
To snap up cheap flights from Phoenix to TYS, book your ticket three months ahead of your planned departure.
The best month for finding cheap Phoenix to Knoxville McGhee Tyson Airport tickets is August. Use the 'Whole month' tool to compare flight prices, then select the dates with the lowest fares.
Locking in a cheap plane ticket from Phoenix to TYS is a breeze with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as a better deal is available.
Save money on your flight from Phoenix to Knoxville McGhee Tyson Airport by using the search filters. Choose your ideal departure time, duration and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Phoenix to Knoxville McGhee Tyson Airport (TYS)

June is the most popular month for flights from Phoenix to Knoxville McGhee Tyson Airport (TYS). Visit Knoxville in January for a more low-key escape.
When booking your Phoenix to TYS plane ticket, consider what kind of weather you prefer. July is the warmest month in Knoxville, with temperatures ranging from 17ºC to 32ºC.
January has temperatures of between -6ºC and 11ºC. Search for cheap tickets from Phoenix to Knoxville McGhee Tyson Airport around that time if you'd rather travel in cooler conditions.

More about Knoxville

Start your Knoxville trip right by choosing the ideal place to stay. After booking your flight from Phoenix to Knoxville McGhee Tyson Airport, check out our range of hotels including:
You'll find plenty of things to do in Knoxville when you're ready to see the sights. Head straight for Ijams Nature Centre followed by McClung Museum of Natural History and Culture and World's Fair Park.

Explore more of the United States

Charlotte is just one of the many cities in the United States waiting to be explored after you've experienced Knoxville. Around 290 kilometres away to the east, popular attractions include Bechtler Museum of Modern Art, Discovery Place and NASCAR Hall of Fame.
If you're eager to discover another side of the United States, head for Nashville, about 257 kilometres west of Knoxville. Grand Ole Opry, Country Music Hall of Fame and Museum and The Johnny Cash Museum are highlights.