TYS - PHX

$71 Find Cheap Flights from Knoxville to Phoenix

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Phoenix departing on 10/17. 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 Phoenix Sky Harbor Intl Airport

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

Cheap Flights from Knoxville to Phoenix (TYS-PHX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Phoenix 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 Knoxville to Phoenix

Sat, Oct 18 - Sun, Oct 19
Allegiant Air Logo
12:45 pm - 1:44 pmTYS-PHX
3h 59mnonstop
Allegiant Air Logo
4:12 pm - 10:42 pmPHX-TYS
3h 30mnonstop
$157Allegiant Air
Find Deal
Fri, Oct 17 - Fri, Oct 24
Allegiant Air Logo
6:20 am - 7:17 amTYS-PHX
3h 57mnonstop
Allegiant Air Logo
7:49 am - 2:19 pmPHX-TYS
3h 30mnonstop
$162Allegiant Air
Find Deal
Mon, Dec 1 - Sun, Dec 7
Allegiant Air Logo
2:24 pm - 4:37 pmTYS-PHX
4h 13mnonstop
Allegiant Air Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
$166Allegiant Air
Find Deal
Sat, Oct 18 - Fri, Oct 24
Allegiant Air Logo
12:45 pm - 1:44 pmTYS-PHX
3h 59mnonstop
Allegiant Air Logo
7:49 am - 2:19 pmPHX-TYS
3h 30mnonstop
$169Allegiant Air
Find Deal
Thu, Dec 4 - Thu, Dec 11
Allegiant Air Logo
2:01 pm - 4:06 pmTYS-PHX
4h 05mnonstop
Allegiant Air Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
$171Allegiant Air
Find Deal
Fri, Oct 17 - Fri, Oct 24
Allegiant Air Logo
6:20 am - 7:17 amTYS-PHX
3h 57mnonstop
Allegiant Air Logo
7:49 am - 2:19 pmPHX-TYS
3h 30mnonstop
$172Allegiant Air
Find Deal
Mon, Dec 8 - Sun, Dec 14
 Logo
4:47 pm - 3:07 pmTYS-PHX
24h 20m1 stop
 Logo
4:56 pm - 10:22 pmPHX-TYS
3h 26mnonstop
Mon, Dec 8 - Mon, Dec 15
Frontier Logo
4:47 pm - 3:07 pmTYS-PHX
24h 20m1 stop
Frontier Logo
7:00 am - 3:52 pmPHX-TYS
6h 52m1 stop
$190Frontier
Find Deal
Thu, Dec 4 - Mon, Dec 15
Frontier Logo
4:47 pm - 9:04 amTYS-PHX
18h 17m1 stop
Frontier Logo
7:00 am - 3:52 pmPHX-TYS
6h 52m1 stop
$202Frontier
Find Deal
Fri, Oct 17 - Thu, Oct 23
Frontier Logo
8:17 pm - 11:14 amTYS-PHX
17h 57m1 stop
Frontier Logo
9:21 am - 7:32 pmPHX-TYS
7h 11m1 stop
$226Frontier
Find Deal

Everything you should know

Top airlines
Allegiant Air
Cheapest • from $157 (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 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 33% 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 Knoxville to Phoenix 6 days a week: Mon, Tue, Thu, Fri, Sat, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest round-trip
$157
Overall average: $313
Allegiant Air
Sat 10/18Sun 10/19
TYS - PHX • Non-stop
Cheapest one-way
$71
Typical prices: $116-333
Allegiant Air
Fri 10/17
TYS - PHX • Non-stop
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We hope you love your trip to Phoenix!
Booking Insights

KAYAK's insights & trends for Knoxville to Phoenix flights

Get data-powered insights and trends into flights from Knoxville to Phoenix 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 Knoxville to Phoenix?

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

For Knoxville to Phoenix, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Phoenix back to Knoxville, the best deals are generally found on Friday, with Tuesday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Phoenix Sky Harbor Intl Airport, 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 Knoxville to Phoenix Sky Harbor Intl Airport is January, where tickets cost $213 (return) on average. On the other hand, the most expensive months are April and November, where the average cost of round-trip tickets is $389 and $379 respectively.

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

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 $288, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Knoxville to Phoenix Sky Harbor Intl Airport, 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 Knoxville to Phoenix Sky Harbor Intl Airport, you should book around 2 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$71
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Knoxville to Phoenix

When to book flights from Knoxville to Phoenix

Are your dates flexible? Find out the best times to travel from Knoxville to Phoenix 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 Knoxville to Phoenix flights

  • Which airline for those flying from Knoxville (TYS) to Phoenix (PHX) offer a carry-on policy to its passengers?

    Allegiant Air is one of the airlines flying from Knoxville to Phoenix that offers a carry-on policy to its passengers. It allows its travelers to come on board with one carry-on bag and one personal item with a weight limit of 25 lbs and they should fit in the overhead bin.

  • How can I easily get out of Phoenix International Airport (PHX) to my destination?

    After your arrival in Phoenix from Knoxville, you should consider using the PHX Sky Train as your mode of transportation from the airport to the city. It's located on level five. This is a safe and convenient means of transportation that will efficiently get you to your destination from the airport.

  • Which among the airlines flying from Knoxville (TYS) to Phoenix (PHX) is a pet-friendly airline?

    Frontier Airline allows you to fly from Knoxville to Phoenix in the company of your pet. If you need to travel from Knoxville to Phoenix with your favorite animal you should consider booking this airline. For the safety of your pet, it is supposed to remain in its container along the journey.

  • Which airline is suitable for booking when flying with kids from Knoxville to Phoenix?

    Delta Air Line is a suitable airline you can consider booking when you are flying from Knoxville to Phoenix in the company of your kids. It has spacious secure seats with seatbelts that makes it comfortable when flying with your child on your lap and in-flight entertainment appropriate for children of all ages.

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

    In the last 3 days, the lowest price for a flight from Knoxville to Phoenix Sky Harbor Intl Airport was $71 for a one-way ticket and $157 for a round-trip.

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

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

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Knoxville to Phoenix are Delta and United Airlines. With an average price for the route of $407 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 $504 and an overall rating of 7.4.

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

    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 Knoxville to Phoenix.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phoenix from Knoxville 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 Knoxville to Phoenix?

    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 Phoenix with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and PHX 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 Knoxville to Phoenix?

    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 Phoenix from Knoxville 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 Knoxville to Phoenix Sky Harbor Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $136 or less one-way and $189 or less round-trip.
  • McGhee Tyson Airport (TYS) and Phoenix Sky Harbor International Airport (PHX) are popularly considered as departure and arrival airport respectively for most of the flights flying from Knoxville to Phoenix.
  • When you are flying from Knoxville to Phoenix, you will decide whether to fly direct or have layovers along your way depending on which airline you book. Booking of Frontier Airline for your flight to Phoenix will allow you have one stop along your journey. Denver International Airport (DEN) will be your layover airport before reaching your destination.
  • For those travelers who have specific dietary needs and are planning to fly from Knoxville to Phoenix, they will have to book an airline that offers special diets to meet their dietary needs. When you book United Airlines, you will be served a special meal like Asian vegetarian or gluten-free by placing your order when making your reservation.
  • If you are located in Knoxville downtown and you want to reach the airport on time for your flight from Knoxville to Phoenix, you should consider taking a taxi. This is one of the fastest and most convenient ways of connecting from downtown to the airport. On the other hand you can also consider using a ride-sharing service as your means of transportation.
  • For those mobility impaired passengers who are looking forward to flying from Knoxville to Phoenix, they should consider booking an airline that offers wheelchair services to passengers in such condition. American Airlines is one of the airlines that offer the wheelchair services on request. Its on-board staff is always ready and willing to offer assistance when you need it.

Prefer to fly direct from Knoxville to Phoenix?

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

Direct departures

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

Direct returns

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

Reviews of the top 5 airlines serving from Knoxville to Phoenix

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Phoenix. 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 Knoxville to Phoenix? 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
7.9Entertainment
7.3Food
8.2Boarding
7.9Comfort
8.5Crew
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.

As smooth as you can expect. Some issues with boarding because the previous plane took forever to deplane but overall, a good experience.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

I miss the screens they used to have for the long flights. I use a Kendal and it doesn’t work well with there WiFi. I tried my cell and the wifi was not good for it either this is the free wifi.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Very friendly and efficient and smooth boarding. We were even way early arriving at my destination. Thank you.

The trip was very smooth and they provided great customer service

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

The seats were crammed and the guy in front of me wouldn't stop reclining. If AA is cramming extra rows in, they need to take away the reclining in coach. My knees were smashed for 4 1/2 hours and I was very close to confronting the passenger in front of me.

What, first class and not even a cup of coffee before landing at 5 am in First Class? Really?

I paid for what I got which was cheap, I brought my own entertainment. I knew what to expect, so I could be prepared. If you’re flying economy, check in early like me. I have no problems with my flight, was on time, staff were friendly, and overall good experience.

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 Knoxville to Phoenix

Information on your arrival and departure airports

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