PHX - TYS

$85 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 11/13. 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
$139
Overall average: $323
Multiple Airlines
Thu 12/4Mon 12/8
PHX - TYS • Non-stop
Cheapest non-stop
$159
Typical prices: $198-$392
Allegiant Air
Thu 12/4Sun 12/7
PHX - TYS • Non-stop
Top airlines
Allegiant Air
Cheapest • from $159 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 21% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 25% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
4 days a week
There are direct flights from Phoenix to Knoxville 4 days a week: Tue, 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, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
Multiple Airlines Logo
4:52 pm - 9:21 pmTYS-PHX
6h 29m1 stop
$139Multiple Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
Multiple Airlines Logo
4:52 pm - 12:44 amTYS-PHX
9h 52m1 stop
$144Multiple Airlines
Find Deal
Thu, Dec 4 - Sun, Dec 7
Multiple Airlines Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
Multiple Airlines Logo
4:52 pm - 12:44 amTYS-PHX
9h 52m1 stop
$146Multiple Airlines
Find Deal
Thu, Dec 4 - Sun, Dec 7
Allegiant Air Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
Allegiant Air Logo
2:01 pm - 4:06 pmTYS-PHX
4h 05mnonstop
$159Allegiant Air
Find Deal
Thu, Dec 4 - Sun, Dec 7
Allegiant Air Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
Allegiant Air Logo
2:01 pm - 4:06 pmTYS-PHX
4h 05mnonstop
$160Allegiant Air
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
Multiple Airlines Logo
4:52 pm - 4:29 pmTYS-PHX
25h 37m2 stops
$189Multiple Airlines
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
7:00 am - 3:57 pmPHX-TYS
6h 57m1 stop
Frontier Logo
4:52 pm - 12:44 amTYS-PHX
9h 52m1 stop
$213Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
7:00 am - 3:57 pmPHX-TYS
6h 57m1 stop
Frontier Logo
4:52 pm - 12:44 amTYS-PHX
9h 52m1 stop
$258Frontier
Find Deal
Wed, Dec 10 - Wed, Dec 17
American Airlines Logo
2:08 pm - 11:57 pmPHX-TYS
7h 49m1 stop
American Airlines Logo
6:18 pm - 11:37 pmTYS-PHX
7h 19m1 stop
$291American Airlines
Find Deal
Sun, Dec 7 - Sat, Dec 13
American Airlines Logo
12:30 am - 11:32 amPHX-TYS
9h 02m1 stop
American Airlines Logo
4:22 pm - 9:15 pmTYS-PHX
6h 53m1 stop
$315American Airlines
Find Deal
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 February, where tickets cost $216 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $350 and $323 respectively.

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 2 weeks before departure, which saves you about 21% 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$85
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 2% 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 $85 for a one-way ticket and $139 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 Monday, 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 $338 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 $151 or less one-way and $223 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

Tuesday

Allegiant Air

Allegiant Air

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

Monday

Allegiant Air

Allegiant Air

Tuesday

Allegiant Air

Allegiant Air

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 7997 reviews
8.5Crew
7.3Food
7.9Comfort
8.2Boarding
7.9Entertainment
Airline reviews

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

8.0 ExcellentPAULINA, Oct 2025LAS - ATL
Read more Delta reviews

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

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.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Wonderful crew and early arrival to our destination. It was so nice to have free wifi access and movies too. Thank you!

At least it was a short flight. Greyhound with wings.

Bigger seats. Board back to front! Disembark front to back!

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.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

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.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

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

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