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$71+ Cheap flights from Knoxville (TYS) to Phoenix

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PHX
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Phoenix are usually found in January or August, booked 33 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap flight deals from Knoxville to Phoenix

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Phoenix (PH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$157
(Cheapflightsfares)

One-way from

$71
(Cheapflightsfares)

Popular in

April

Cheapest in

January

Average price

$260
From Knoxville McGhee Tyson to Phoenix
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One-way flight from Knoxville McGhee Tyson to Phoenix
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Highest demand for flights based on searches. 13% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Knoxville to Phoenix

Cheapest flights from Knoxville to Phoenix
Explore the most affordable flight options available from Knoxville to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1812:45 pmTYS - PHX
Nonstop3h 59mAllegiant Air
Sun 10/194:12 pmPHX - TYS
Nonstop3h 30mAllegiant Air
Deal found 9/14$157
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/12:24 pmTYS - PHX
Nonstop4h 13mAllegiant Air
Sun 12/74:56 pmPHX - TYS
Nonstop3h 26mAllegiant Air
Deal found 9/14$166
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:00 amTYS - PHX
Nonstop3h 59mAllegiant Air
Sun 10/264:12 pmPHX - TYS
Nonstop3h 30mAllegiant Air
Deal found 9/15$168
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:01 pmTYS - PHX
Nonstop4h 05mAllegiant Air
Thu 12/114:56 pmPHX - TYS
Nonstop3h 26mAllegiant Air
Deal found 9/14$171
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:20 amTYS - PHX
Nonstop3h 57mAllegiant Air
Fri 10/247:49 amPHX - TYS
Nonstop3h 30mAllegiant Air
Deal found 9/15$173
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/84:47 pmTYS - PHX
1 stop24h 20mMultiple Airlines
Thu 12/114:56 pmPHX - TYS
Nonstop3h 26mMultiple Airlines
Deal found 9/14$181
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1812:45 pmTYS - PHX
Nonstop3h 59mAllegiant Air
Fri 10/247:49 amPHX - TYS
Nonstop3h 30mAllegiant Air
Deal found 9/13$186
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:01 pmTYS - PHX
Nonstop4h 05mAllegiant Air
Sun 12/144:56 pmPHX - TYS
Nonstop3h 26mAllegiant Air
Deal found 9/14$187
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:20 amTYS - PHX
Nonstop3h 57mAllegiant Air
Mon 10/2711:49 amPHX - TYS
Nonstop3h 30mAllegiant Air
Deal found 9/13$188
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/84:47 pmTYS - PHX
1 stop24h 20mFrontier
Mon 12/157:00 amPHX - TYS
1 stop6h 52mFrontier
Deal found 9/14$190

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Phoenix that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Knoxville to Phoenix that are best for you.

Fly from

Knoxville

Fly to

Phoenix

Route

Depart

Return

Price

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Sat 10/18

12:45 pm-1:44 pm

Nonstop3h 59m

Phoenix Sky Harbor Intl

Mon 10/20

11:49 am-6:19 pm

Nonstop3h 30m

$219

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Mon 10/20

4:53 pm-12:06 pm

1 stop22h 13m

Phoenix Sky Harbor Intl

Mon 10/27

11:49 am-6:19 pm

Nonstop3h 30m

$248

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Sun 11/2

1:16 pm-8:51 pm

2 stops33h 35m

Phoenix Sky Harbor Intl

Sat 11/8

6:11 pm-6:22 pm

1 stop22h 11m

$250

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Tue 12/23

12:21 pm-2:26 pm

Nonstop4h 05m

Phoenix Sky Harbor Intl

Tue 12/30

3:16 pm-8:42 pm

Nonstop3h 26m

$253

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Sat 12/6

8:45 am-1:21 pm

1 stop6h 36m

Phoenix Sky Harbor Intl

Wed 12/10

6:00 am-2:51 pm

1 stop6h 51m

$257

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Sat 10/18

12:45 pm-1:44 pm

Nonstop3h 59m

Phoenix Sky Harbor Intl

Sat 10/25

12:14 pm-7:32 pm

1 stop28h 18m

$261

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Fri 10/17

8:10 pm-11:00 pm

1 stop5h 50m

Phoenix Sky Harbor Intl

Tue 10/28

2:01 pm-10:55 pm

1 stop5h 54m

$283

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Thu 12/4

7:59 pm-12:16 am

1 stop6h 17m

Phoenix Sky Harbor Intl

Tue 12/16

11:50 pm-9:36 am

1 stop7h 46m

$283

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Tue 12/23

5:40 pm-11:37 pm

1 stop7h 57m

Phoenix Sky Harbor Intl

Tue 12/30

5:05 am-3:58 pm

1 stop8h 53m

$309

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Sat 10/18

4:26 pm-8:24 am

2 stops18h 58m

Phoenix Sky Harbor Intl

Mon 10/20

10:58 am-10:33 am

1 stop20h 35m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 21 results
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Best time to book a flight from Knoxville to Phoenix

Have a flexible travel schedule? Discover the best time to fly to Phoenix from Knoxville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Knoxville to Phoenix?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Phoenix. Price data was last updated on September 12, 2025.

Booking 33 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Phoenix. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Knoxville to Phoenix?

Currently, January is the cheapest month in which you can book a flight from Knoxville to Phoenix (average of $258). Flying from Knoxville to Phoenix in March is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TYS to PHX?

Find hourly flight availability from Knoxville to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Knoxville to Phoenix in the morning. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Knoxville to Phoenix?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Phoenix. Price data was last updated on November 18, 2024.

Travelers seeking maximum savings on their Knoxville to Phoenix flight should consider departing on Thursday mornings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Phoenix

Get insights into the airlines that provide service to Phoenix. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Phoenix. Reviews last updated September 16, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Knoxville to Phoenix by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,929 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
699 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,172 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Phoenix. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Knoxville to Phoenix?

    If you book a flight to Phoenix from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 0 flights from McGhee Tyson to Phoenix per day from 5 different airlines.

  • How long is the flight from Knoxville to Phoenix?

    There are many flights that can get you from Knoxville to Phoenix in 3h 59m. Fly via Allegiant Air or Delta to get the fastest option. The distance between Knoxville and Phoenix is about 1594 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Knoxville to Phoenix round-trip?

    Flying on Allegiant Air is currently your cheapest option to Phoenix, with prices starting at $115. Additional round-trip tickets that might be worth considering are offered by Delta and Frontier, with the lowest prices starting at $128 and $138, respectively. Allegiant Air is 64% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Knoxville to Phoenix one-way?

    $71 is the cheapest one-way deal found within the past few days, from Allegiant Air. You may also be able to find cheap deals on Frontier and American Airlines, with prices starting from $88 and $126, respectively.

  • What are the cheapest flights from Knoxville to Phoenix?

    Looking at all options, your cheapest flight can be booked for $117. While the most popular route (Knoxville McGhee Tyson - Phoenix Sky Harbor Intl) can be booked for $166 on average, our data indicates $167 when flying from Knoxville to Phoenix.

  • Can I find deals for flights from Knoxville to Phoenix that include hotel bookings?

    Yes. In addition to deals on Knoxville to Phoenix flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Phoenix?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Phoenix.

  • Can I find deals for business class flights from Knoxville to Phoenix?

    Yes. Cheapflights offers flight deals from Knoxville to Phoenix by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Phoenix?

    Currently, January is the cheapest month in which you can book a flight from Knoxville to Phoenix (average of $258). Flying from Knoxville to Phoenix in March is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 5 airlines flying from Knoxville to Phoenix

Discover the top 5 airlines that operate flights from Knoxville to Phoenix. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$115Average$230FlexibilityNo cancel feeOn-time88%
DeltaCheapest$128Average$407FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$138Average$302FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$220Average$526FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$255Average$480FlexibilityNo cancel feeOn-time71%

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