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$74+ Cheap flights from Sky Harbor Intl (PHX) to Knoxville (TYS)

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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — TYS
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Knoxville McGhee Tyson are usually found in January or February, booked 47 days in advance, depart on a Friday or Monday and return on a Tuesday

Cheap flight deals from Sky Harbor Intl to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Knoxville (TYS). 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 septiembre 11, 2025.

Round-trip from

$181
(Frontier)

One-way from

$74
(Cheapflightsfares)

Popular in

December

Cheapest in

January

Average price

$359

Good round-trip deal

$150 or less

Good one-way deal

$78 or less
From Phoenix Sky Harbor Intl to Knoxville McGhee Tyson
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One-way flight from Phoenix Sky Harbor Intl to Knoxville McGhee Tyson
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Highest demand for flights based on searches. 4% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Knoxville McGhee Tyson.
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Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Knoxville McGhee Tyson.
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Find flight deals from Sky Harbor Intl to Knoxville

Cheapest flights from Sky Harbor Intl to Knoxville
Explore the most affordable flight options available from Sky Harbor Intl to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/69:34 amPHX - TYS
1 stop6h 48mFrontier
jue. 11/137:17 pmTYS - PHX
1 stop7h 12mFrontier
Deal found 9/10$181
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/216:00 amPHX - TYS
1 stop7h 18mFrontier
jue. 9/258:40 pmTYS - PHX
1 stop5h 47mFrontier
Deal found 9/10$183
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
dom. 9/214:19 pmPHX - TYS
Nonstop3h 31mAllegiant Air
jue. 9/252:33 pmTYS - PHX
Nonstop3h 56mAllegiant Air
Deal found 9/9$187
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
jue. 11/65:36 pmPHX - TYS
Nonstop3h 22mMultiple Airlines
jue. 11/137:17 pmTYS - PHX
1 stop15h 07mMultiple Airlines
Deal found 9/10$204
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
jue. 11/137:30 amPHX - TYS
1 stop8h 52mMultiple Airlines
dom. 11/167:00 amTYS - PHX
1 stop14h 33mMultiple Airlines
Deal found 9/11$206
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
dom. 9/214:19 pmPHX - TYS
Nonstop3h 31mMultiple Airlines
dom. 9/287:00 amTYS - PHX
1 stop28h 00mMultiple Airlines
Deal found 9/9$214
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/253:41 pmPHX - TYS
1 stop5h 42mAmerican Airlines
sáb. 11/85:35 pmTYS - PHX
1 stop8h 17mAmerican Airlines
Deal found 9/10$215
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
vie. 10/1710:58 amPHX - TYS
1 stop20h 20mMultiple Airlines
vie. 10/246:00 amTYS - PHX
Nonstop3h 59mMultiple Airlines
Deal found 9/9$217
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
dom. 12/214:56 pmPHX - TYS
Nonstop3h 26mAllegiant Air
jue. 1/11:10 pmTYS - PHX
Nonstop4h 05mAllegiant Air
Deal found 9/9$218
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
vie. 10/178:02 amPHX - TYS
Nonstop3h 26mAllegiant Air
vie. 10/246:00 amTYS - PHX
Nonstop3h 59mAllegiant Air
Deal found 9/9$221
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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.
jue. 11/65:36 pmPHX - TYS
Nonstop3h 22mAllegiant Air
dom. 11/92:34 pmTYS - PHX
Nonstop4h 12mAllegiant Air
Deal found 9/9$224
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
dom. 9/214:19 pmPHX - TYS
Nonstop3h 31mMultiple Airlines
jue. 9/255:55 pmTYS - PHX
1 stop20h 01mMultiple Airlines
Deal found 9/9$226

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Knoxville 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Knoxville that are best for you.

Fly from

Sky Harbor Intl

Fly to

Knoxville

Route

Depart

Return

Price

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

dom. 9/21

6:00 am-4:18 pm

1 stop7h 18m

Knoxville McGhee Tyson

jue. 9/25

8:40 pm-11:27 pm

1 stop5h 47m

$183

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

lun. 9/22

9:05 am-7:45 pm

1 stop7h 40m

Knoxville McGhee Tyson

jue. 9/25

8:40 pm-11:27 pm

1 stop5h 47m

$206

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

dom. 9/21

4:19 pm-10:50 pm

Nonstop3h 31m

Knoxville McGhee Tyson

jue. 9/25

2:33 pm-3:29 pm

Nonstop3h 56m

$216

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

dom. 9/21

4:19 pm-10:50 pm

Nonstop3h 31m

Knoxville McGhee Tyson

dom. 9/28

7:00 am-8:00 am

1 stop28h 00m

$225

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

dom. 9/21

4:19 pm-10:50 pm

Nonstop3h 31m

Knoxville McGhee Tyson

vie. 9/26

12:45 pm-11:22 am

2 stops25h 37m

$255

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

sáb. 11/1

11:03 am-9:13 pm

1 stop7h 10m

Knoxville McGhee Tyson

sáb. 11/8

2:41 pm-7:01 pm

1 stop6h 20m

$257

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

lun. 11/3

11:58 am-10:33 am

1 stop20h 35m

Knoxville McGhee Tyson

jue. 11/13

7:17 pm-7:33 pm

1 stop26h 16m

$277

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

mié. 10/1

6:00 am-3:06 pm

1 stop6h 06m

Knoxville McGhee Tyson

mié. 10/8

2:16 pm-7:15 pm

1 stop7h 59m

$305

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

lun. 9/22

9:05 am-7:45 pm

1 stop7h 40m

Knoxville McGhee Tyson

sáb. 9/27

4:31 pm-10:56 am

1 stop21h 25m

$305

PhoenixKnoxville

PHX - TYS

PHXTYS

Phoenix Sky Harbor Intl

sáb. 10/4

5:07 pm-4:18 pm

1 stop20h 11m

$75

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 21 results
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Best time to book a flight from Sky Harbor Intl to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Knoxville

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

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Knoxville. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Phoenix Sky Harbor Intl Airport to Knoxville, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Knoxville?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Knoxville (average of $294). Flying from Phoenix Sky Harbor Intl Airport to Knoxville in March is currently the most expensive (average of $376). 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 PHX to TYS?

Find hourly flight availability from Sky Harbor Intl to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from Phoenix Sky Harbor Intl Airport to Knoxville, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 57% versus a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Knoxville. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Knoxville flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated septiembre 11, 2025.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Knoxville, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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
702 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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
3,177 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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 Sky Harbor Intl to Knoxville. 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 into for flights to Knoxville from Phoenix Sky Harbor Intl?

    If you book a flight to Knoxville from Phoenix Sky Harbor Intl, you will be flying to 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 Phoenix Sky Harbor Intl to McGhee Tyson per day from 5 different airlines.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Knoxville?

    For as low as $216, Frontier can have you in Knoxville from Phoenix Sky Harbor Intl Airport in 3h 31m. The distance between Phoenix Sky Harbor Intl Airport and Knoxville is about 1594 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Knoxville round-trip?

    Frontier, at $96, was found to be the cheapest airline from Phoenix Sky Harbor Intl Airport to Knoxville.Alternate airlines to your destination round-trip include Allegiant Air and United Airlines. These flights start at 69% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Knoxville one-way?

    The cheapest airlines for a one-way flight from Phoenix Sky Harbor Intl Airport to Knoxville are Frontier ($75), Allegiant Air ($81), and American Airlines ($108).

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Knoxville?

    Looking at all options, your cheapest flight can be booked for $67. While the most popular route (Phoenix Sky Harbor Intl - Knoxville McGhee Tyson) can be booked for $182 on average, our data indicates $170 when flying from Phoenix Sky Harbor Intl Airport to Knoxville.

  • Can I find deals for flights from Sky Harbor Intl to Knoxville that include hotel bookings?

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

  • How can I find direct flights from Sky Harbor Intl to Knoxville?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Knoxville?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Knoxville 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 Phoenix Sky Harbor Intl Airport to Knoxville?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Knoxville (average of $294). Flying from Phoenix Sky Harbor Intl Airport to Knoxville in March is currently the most expensive (average of $376). 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

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Morristown
Cherokee
Corbin
Alcoa
Oak Ridge
Murphy

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Alternative routes for Sky Harbor Intl to Knoxville

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Sky Harbor Intl to Knoxville

Discover the top 5 airlines that operate flights from Sky Harbor Intl to Knoxville. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$96Average$255FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$114Average$217FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$250Average$456FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$441FlexibilityNo cancel feeOn-time71%
DeltaCheapest$269Average$342FlexibilityNo cancel feeOn-timeN/A

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