PHX - TYS

$70 Find Cheap Flights from Phoenix to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Phoenix to Knoxville departing on 12/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Knoxville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Knoxville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Knoxville, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$122
Overall average: $194
Allegiant Air
Thu 1/8Sun 1/18
PHX - TYS • Non-stop
Cheapest one-way
$70
Typical prices: $117-$238
Allegiant Air
Thu 12/25
PHX - TYS • Non-stop
Top airlines
Allegiant Air
Cheapest • from $205 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 32% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
3 days a week
There are direct flights from Phoenix to Knoxville 3 days a week: Thu, Sat, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Phoenix to Knoxville (PHX-TYS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phoenix to Knoxville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Phoenix to Knoxville

Thu, Jan 8 - Sun, Jan 18
Allegiant Air Logo
1:16 pm - 6:39 pm
PHX
-
TYS
3h 23mnonstop
Allegiant Air Logo
10:00 am - 12:26 pm
TYS
-
PHX
4h 26mnonstop
$122Allegiant Air
Thu, Feb 5 - Thu, Feb 26
Allegiant Air Logo
1:16 pm - 6:39 pm
PHX
-
TYS
3h 23mnonstop
Allegiant Air Logo
8:30 am - 11:04 am
TYS
-
PHX
4h 34mnonstop
$150Allegiant Air
Thu, Feb 19 - Sun, Feb 22
Allegiant Air Logo
11:55 am - 5:22 pm
PHX
-
TYS
3h 27mnonstop
Allegiant Air Logo
8:30 am - 11:05 am
TYS
-
PHX
4h 35mnonstop
$164Allegiant Air
Tue, Dec 30 - Thu, Jan 8
Frontier Logo
7:00 am - 3:51 pm
PHX
-
TYS
6h 51m1 stop
Frontier Logo
4:23 pm - 12:29 am
TYS
-
PHX
10h 06m1 stop
$182Frontier
Thu, Jan 8 - Sun, Jan 18
Multiple Airlines Logo
5:33 pm - 4:50 pm
PHX
-
TYS
21h 17m1 stop
Multiple Airlines Logo
10:00 am - 12:26 pm
TYS
-
PHX
4h 26mnonstop
$195Multiple Airlines
Thu, Feb 19 - Sun, Feb 22
Allegiant Air Logo
11:55 am - 5:22 pm
PHX
-
TYS
3h 27mnonstop
Allegiant Air Logo
8:30 am - 11:05 am
TYS
-
PHX
4h 35mnonstop
$199Allegiant Air
Thu, Jan 8 - Thu, Jan 15
Frontier Logo
7:00 am - 3:28 pm
PHX
-
TYS
6h 28m1 stop
Frontier Logo
8:18 pm - 12:59 am
TYS
-
PHX
6h 41m1 stop
$203Frontier
Thu, Jan 8 - Sun, Jan 18
Multiple Airlines Logo
9:22 pm - 5:28 pm
PHX
-
TYS
18h 06m2 stops
Multiple Airlines Logo
10:00 am - 12:26 pm
TYS
-
PHX
4h 26mnonstop
$205Multiple Airlines
Thu, Jan 1 - Sun, Jan 18
Allegiant Air Logo
4:05 pm - 9:31 pm
PHX
-
TYS
3h 26mnonstop
Allegiant Air Logo
10:00 am - 12:26 pm
TYS
-
PHX
4h 26mnonstop
$210Allegiant Air
Thu, Feb 19 - Sun, Feb 22
Multiple Airlines Logo
11:55 am - 5:22 pm
PHX
-
TYS
3h 27mnonstop
Multiple Airlines Logo
6:12 pm - 3:27 pm
TYS
-
PHX
23h 15m2 stops
$212Multiple Airlines
Booking Insights

KAYAK's insights & trends for Phoenix to Knoxville flights

Get data-powered insights and trends into flights from Phoenix to Knoxville to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Phoenix to Knoxville?

The average price of all round-trip flights from Phoenix Sky Harbor Intl Airport to Knoxville clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Knoxville on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Tuesday is the most expensive day to fly from Phoenix to Knoxville. For your return ticket, we recommend flying on a Friday and avoiding Mondays for the best deals.

What is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Knoxville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Knoxville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Phoenix Sky Harbor Intl Airport to Knoxville is January, where tickets cost $194 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $347 and $324 respectively.

Can I save money by flying with a layover from Phoenix Sky Harbor Intl Airport to Knoxville?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $266, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Phoenix Sky Harbor Intl Airport to Knoxville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Knoxville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Phoenix Sky Harbor Intl Airport to Knoxville, you should book around 3 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$70
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Phoenix to Knoxville

When to book flights from Phoenix to Knoxville

Are your dates flexible? Find out the best times to travel from Phoenix to Knoxville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Phoenix to Knoxville flights

  • Which cities can I connect to after deplaning from my Phoenix to Knoxville flight at Knoxville McGhee Tyson (TYS)?

    Besides Knoxville, TYS is also the destination airport for travelers connecting to the neighboring cities. Among these cities are Maryville, Alcoa, and Farragut. With these cities being a comfortable driving distance away from TYS, you can conveniently connect to these cities via a car rental, a taxi, or a ride-share service.

  • Which family-friendly airline should I consider for my flight from Phoenix to Knoxville?

    Allegiant Air and American Airlines offer great options when considering family-friendly airlines for your Phoenix to Knoxville flight. Allegiant Air provides a dedicated kids' zone with coloring books and games, while American Airlines offers in-flight entertainment with kid-friendly movies and TV shows. They also offer priority boarding for families with kids.

  • Which eco-friendly airline should I consider for my Phoenix to Knoxville flight?

    One of the eco-friendly airlines to consider for your Phoenix to Knoxville flight is Allegiant Air. The airline has significantly reduced its environmental impact by implementing fuel-efficient aircraft, optimizing flight routes, and implementing recycling programs. Choosing Allegiant Air would contribute to a greener travel experience.

  • How can I connect from Knoxville McGhee Tyson (TYS) to the city center after landing from my Phoenix to Knoxville flight?

    Among the transport options you could consider for your movement from TYS to the city after your flight from Phoenix to Knoxville are a car rental, a taxi, a ride-share service, or public means of transport – such as buses or trains. Some of the popular buses offering cheap transport options from TYS to the city center are the Knoxville Area Transit (KAT) buses.

  • What is the cheapest flight from Phoenix Sky Harbor Intl Airport to Knoxville?

    In the last 3 days, the lowest price for a flight from Phoenix Sky Harbor Intl Airport to Knoxville was $70 for a one-way ticket and $122 for a round-trip.

  • Do I need a passport to fly between Phoenix and Knoxville?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Phoenix to Knoxville?

    Phoenix and Knoxville are both served by 1 main airport. You will leave Phoenix from Phoenix Sky Harbor Intl and will be arriving at Knoxville McGhee Tyson.

  • Which airlines offer Wi-Fi service onboard planes from Phoenix to Knoxville?

    Only American Airlines offers inflight Wi-Fi service on the Phoenix to Knoxville flight route.

  • Which aircraft models fly most regularly from Phoenix to Knoxville?

    The Airbus A320-100/200 is the aircraft model that flies most regularly on the Phoenix to Knoxville flight route.

  • Which airline alliances offer flights from Phoenix to Knoxville?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Phoenix and Knoxville, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Phoenix to Knoxville?

    You can catch a nonstop flight from Phoenix to Knoxville on Tuesday, Thursday, Saturday, and Sunday.

  • Which is the best airline for flights from Phoenix to Knoxville, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Phoenix to Knoxville are Delta and United Airlines. With an average price for the route of $336 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $453 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Phoenix to Knoxville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phoenix to Knoxville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phoenix to Knoxville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Knoxville from Phoenix is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Phoenix to Knoxville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Knoxville with an airline and back to Phoenix with another airline. Booking your flights between Phoenix and TYS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phoenix to Knoxville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Knoxville from Phoenix up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Phoenix Sky Harbor Intl Airport to Knoxville

  • Looking for a cheap flight? 25% of our users found flights on this route for $147 or less one-way and $258 or less round-trip.
  • With Sky Harbor Intl (PHX) acting as the hub and an operating base for American Airlines, the airline has arguably the highest number of flights to various destinations, including Knoxville. To access a flight that will fit your schedule to Knoxville, consider booking your flight with American Airlines.
  • Since most airlines offering flights from Phoenix to Knoxville offer indirect flights, you have to consider including your layovers during your budgeting process. Some of the common layovers to include in your budgeting and planning process are Atlanta Hartsfield-Jackson (ATL), Charlotte Douglas (CLT), and Chicago O'Hare Intl (ORD).
  • When traveling from Phoenix to Knoxville on a limited-time schedule, you have to consider booking your flight with Allegiant Air. Allegiant Air is highly ranked among the airlines with the highest direct flights for the route.
  • Although most airlines operating from Phoenix to Knoxville highly consider Persons with Reduced Mobility PRMs, Allegiant Air and American Airlines have the best accessibility services. To ensure travel convenience and inclusivity on their flight, these airlines offer priority boarding for PRMs. They also have a team of well-trained and experienced professionals whose primary role is to ensure accessibility services for PRMs.
  • To conveniently fly from Phoenix to Knoxville with your furry friend, consider booking your flight with American Airlines. Provided your pet is at least eight weeks old, its weight plus the carrier is not exceeding 20 lbs, and the carrier can fit under your chair, you will travel with your pet in the cabin. However, your larger pets will be transported as cargo in an appropriate pressure and temperature-controlled cargo hold.

Prefer to fly direct from Phoenix to Knoxville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Phoenix Sky Harbor Intl to Knoxville McGhee Tyson.
Find which airlines fly direct from Phoenix Sky Harbor Intl Airport to Knoxville McGhee Tyson Airport, which days they fly and book direct flights.

Direct departures

Phoenix Sky Harbor Intl to Knoxville McGhee Tyson

Thursday

Allegiant Air

Allegiant Air

Saturday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Knoxville McGhee Tyson to Phoenix Sky Harbor Intl

Thursday

Allegiant Air

Allegiant Air

Saturday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top 5 airlines serving from Phoenix to Knoxville

 
See real verified KAYAK customer reviews for airlines flying from Phoenix to Knoxville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Phoenix to Knoxville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8007 reviews
7.9Comfort
7.9Entertainment
8.1Boarding
7.3Food
8.5Crew
Airline reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

6.0 GoodJeff, Dec 2025
JFK - MIA
Read more Delta reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

Liked that it was on time. Staff professional and friendly.

More choices on snacks. Built-in video screen to enjoy entertainment choices.

Loved the crew . Absolutely no complaints. Except for luggage lost

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

We are too tired and frustrated to comment politely at this point

Ring in first class for an overnight flight, there was no blankets nor pillows for first class customers.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

I didn't like that my paid for seat was changed 2 hours before my flight.

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

Not clean and was told I would get a great seat and it was not great at all

Flight got delayed for 5 hours no good explanation was offered ;(

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Everything you need to know for your flight from Phoenix to Knoxville

Information on your arrival and departure airports