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 10/24. 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

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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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 - 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
$180Allegiant Air
Find Deal
Thu, Nov 6 - Thu, Nov 13
Frontier Logo
9:34 am - 6:22 pmPHX-TYS
6h 48m1 stop
Frontier Logo
7:17 pm - 8:24 amTYS-PHX
15h 07m1 stop
$184Frontier
Find Deal
Fri, Oct 24 - Mon, Oct 27
Allegiant Air Logo
7:49 am - 2:19 pmPHX-TYS
3h 30mnonstop
Allegiant Air Logo
10:00 am - 10:59 amTYS-PHX
3h 59mnonstop
$191Allegiant Air
Find Deal
Thu, Nov 6 - Thu, Nov 13
Frontier Logo
9:34 am - 6:22 pmPHX-TYS
6h 48m1 stop
Frontier Logo
7:17 pm - 3:18 pmTYS-PHX
22h 01m2 stops
$203Frontier
Find Deal
Sat, Oct 4 - Fri, Oct 10
Frontier Logo
5:07 pm - 4:18 pmPHX-TYS
20h 11m1 stop
Frontier Logo
8:17 pm - 12:23 pmTYS-PHX
19h 06m2 stops
$208Frontier
Find Deal
Thu, Nov 6 - Thu, Nov 13
 Logo
5:36 pm - 10:58 pmPHX-TYS
3h 22mnonstop
 Logo
7:17 pm - 9:44 pmTYS-PHX
28h 27m1 stop
Fri, Oct 24 - Sun, Oct 26
 Logo
7:49 am - 2:19 pmPHX-TYS
3h 30mnonstop
 Logo
7:00 am - 7:59 amTYS-PHX
27h 59m1 stop
Sat, Oct 25 - Sat, Nov 8
American Airlines Logo
10:04 pm - 9:32 amPHX-TYS
8h 28m1 stop
American Airlines Logo
7:54 am - 3:10 pmTYS-PHX
9h 16m1 stop
$251American Airlines
Find Deal
Thu, Dec 11 - Sat, Dec 13
American Airlines Logo
2:08 pm - 11:57 pmPHX-TYS
7h 49m1 stop
American Airlines Logo
5:45 pm - 11:52 pmTYS-PHX
8h 07m1 stop
$280American Airlines
Find Deal
Sat, Sep 27 - Wed, Oct 1
Delta Logo
11:23 am - 10:35 pmPHX-TYS
8h 12m1 stop
Delta Logo
6:40 am - 12:42 pmTYS-PHX
9h 02m1 stop
$308Delta
Find Deal

Everything you should know

Top airlines
Allegiant Air
Cheapest • from $180 (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 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 34% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
6 days a week
There are direct flights from Phoenix to Knoxville 6 days a week: Mon, Tue, Thu, Fri, Sat, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest round-trip
$180
Overall average: $350
Allegiant Air
Thu 12/4Sun 12/7
PHX - TYS • Non-stop
Cheapest one-way
$85
Typical prices: $128-250
Allegiant Air
Fri 10/24
PHX - TYS • Non-stop
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We hope you love your trip to Knoxville!
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 Friday, 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 Tuesday 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 December, where the average cost of round-trip tickets is $350 and $350 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 3 weeks before departure, which saves you about 42% 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 35% drop in price.
Most popular time to fly and prices are also 5% lower on average.
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 $180 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.

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

    You can catch a nonstop flight from Phoenix to Knoxville on Monday, Thursday, Friday, 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 $345 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 $463 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 $78 or less one-way and $150 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

Monday

Allegiant Air

Allegiant Air

Tuesday

Allegiant Air

Allegiant Air

Thursday

Allegiant Air

Allegiant Air

Friday

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

Friday

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 7954 reviews
8.5Crew
8.2Boarding
7.3Food
7.9Comfort
7.9Entertainment
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

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!

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

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.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

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

Information on your arrival and departure airports

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