Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Knoxville to Phoenix from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Phoenix departing on 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Knoxville to Phoenix

Cheap round-trip flights

Allegiant Air Logo
2:23 pm - 3:22 pmTYS-PHX
3h 59mnonstop
Allegiant Air Logo
4:12 pm - 10:42 pmPHX-TYS
3h 30mnonstop
$122Allegiant Air
Find Deal
Thu, Oct 23 - Sun, Oct 26
Allegiant Air Logo
6:00 am - 7:15 amTYS-PHX
4h 15mnonstop
Allegiant Air Logo
3:57 pm - 10:24 pmPHX-TYS
3h 27mnonstop
$129Allegiant Air
Find Deal
Sun, Aug 17 - Thu, Aug 21
Allegiant Air Logo
6:20 am - 7:17 amTYS-PHX
3h 57mnonstop
Allegiant Air Logo
4:12 pm - 10:42 pmPHX-TYS
3h 30mnonstop
$136Allegiant Air
Find Deal
Fri, Oct 17 - Sun, Oct 19
American Airlines Logo
2:02 pm - 7:14 pmTYS-PHX
8h 12m1 stop
American Airlines Logo
7:00 am - 5:28 pmPHX-TYS
8h 28m1 stop
$240American Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
Frontier Logo
5:25 pm - 8:27 amTYS-PHX
18h 02m1 stop
Frontier Logo
8:21 pm - 4:29 pmPHX-TYS
17h 08m1 stop
$245Frontier
Find Deal
Sun, Aug 10 - Sat, Aug 16
American Airlines Logo
2:02 pm - 7:14 pmTYS-PHX
8h 12m1 stop
American Airlines Logo
10:04 pm - 9:32 amPHX-TYS
8h 28m1 stop
$251American Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
United Airlines Logo
4:58 pm - 8:21 pmTYS-PHX
6h 23m1 stop
United Airlines Logo
12:55 pm - 11:59 pmPHX-TYS
9h 04m2 stops
$256United Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 4
Frontier Logo
8:40 pm - 11:27 pmTYS-PHX
5h 47m1 stop
Frontier Logo
7:00 am - 7:45 pmPHX-TYS
9h 45m1 stop
$258Frontier
Find Deal
Thu, Sep 18 - Mon, Sep 22
Delta Logo
5:45 am - 9:09 amTYS-PHX
6h 24m1 stop
Delta Logo
11:59 pm - 9:30 amPHX-TYS
6h 31m1 stop
$298Delta
Find Deal
Mon, Aug 11 - Wed, Aug 20
Delta Logo
5:45 am - 9:09 amTYS-PHX
6h 24m1 stop
Delta Logo
1:37 pm - 11:48 pmPHX-TYS
7h 11m1 stop
$314Delta
Find Deal
Mon, Aug 11 - Mon, Aug 18

Allegiant Air flights from Knoxville to Phoenix Sky Harbor Intl Airport

Our best Allegiant Air deals on Knoxville to Phoenix Sky Harbor Intl Airport flight tickets
Allegiant Air
Aug 7
TYS6:00 amKnoxville McGhee Tyson
3h 49m
PHX6:49 amPhoenix Sky Harbor Intl
Aug 10
PHX7:39 amPhoenix Sky Harbor Intl
3h 32m
TYS2:11 pmKnoxville McGhee Tyson
$115
Find similar
Allegiant Air
Oct 23
TYS2:23 pmKnoxville McGhee Tyson
3h 59m
PHX3:22 pmPhoenix Sky Harbor Intl
Oct 26
PHX4:12 pmPhoenix Sky Harbor Intl
3h 30m
TYS10:42 pmKnoxville McGhee Tyson
$122
Find similar
Allegiant Air
Aug 17
TYS6:00 amKnoxville McGhee Tyson
4h 15m
PHX7:15 amPhoenix Sky Harbor Intl
Aug 21
PHX3:57 pmPhoenix Sky Harbor Intl
3h 27m
TYS10:24 pmKnoxville McGhee Tyson
$129
Find similar

American Airlines flights from Knoxville to Phoenix Sky Harbor Intl Airport

Our best American Airlines deals on Knoxville to Phoenix Sky Harbor Intl Airport flight tickets
American Airlines
Oct 31
TYS2:02 pmKnoxville McGhee Tyson
8h 12m
1 stop
PHX7:14 pmPhoenix Sky Harbor Intl
Nov 4
PHX7:00 amPhoenix Sky Harbor Intl
8h 28m
1 stop
TYS5:28 pmKnoxville McGhee Tyson
$240
Find similar
American Airlines
Oct 21
TYS2:02 pmKnoxville McGhee Tyson
8h 12m
1 stop
PHX7:14 pmPhoenix Sky Harbor Intl
Oct 25
PHX10:04 pmPhoenix Sky Harbor Intl
8h 28m
1 stop
TYS9:32 amKnoxville McGhee Tyson
$251
Find similar
American Airlines
Aug 30
TYS12:42 pmKnoxville McGhee Tyson
6h 12m
1 stop
PHX3:54 pmPhoenix Sky Harbor Intl
Aug 31
PHX12:24 amPhoenix Sky Harbor Intl
9h 02m
1 stop
TYS12:26 pmKnoxville McGhee Tyson
$259
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to Phoenix Sky Harbor Intl Airport 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Knoxville to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Thu 10/23

2:23 pm-3:22 pm

Nonstop3h 59m

Phoenix Sky Harbor Intl

Sun 10/26

4:12 pm-10:42 pm

Nonstop3h 30m

$122

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Sun 8/17

6:00 am-7:15 am

Nonstop4h 15m

Phoenix Sky Harbor Intl

Thu 8/21

3:57 pm-10:24 pm

Nonstop3h 27m

$129

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Fri 10/17

6:20 am-7:17 am

Nonstop3h 57m

Phoenix Sky Harbor Intl

Sun 10/19

4:12 pm-10:42 pm

Nonstop3h 30m

$136

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Fri 10/31

2:02 pm-7:14 pm

1 stop8h 12m

Phoenix Sky Harbor Intl

Tue 11/4

7:00 am-5:28 pm

1 stop8h 28m

$240

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Sun 8/10

5:25 pm-8:27 am

1 stop18h 02m

Phoenix Sky Harbor Intl

Sat 8/16

8:21 pm-4:29 pm

1 stop17h 08m

$245

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Tue 10/21

2:02 pm-7:14 pm

1 stop8h 12m

Phoenix Sky Harbor Intl

Sat 10/25

10:04 pm-9:32 am

1 stop8h 28m

$251

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Tue 10/28

4:58 pm-8:21 pm

1 stop6h 23m

Phoenix Sky Harbor Intl

Tue 11/4

12:55 pm-11:59 pm

2 stops9h 04m

$256

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Thu 9/18

8:40 pm-11:27 pm

1 stop5h 47m

Phoenix Sky Harbor Intl

Mon 9/22

7:00 am-7:45 pm

1 stop9h 45m

$258

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Mon 8/11

5:45 am-9:09 am

1 stop6h 24m

Phoenix Sky Harbor Intl

Wed 8/20

11:59 pm-9:30 am

1 stop6h 31m

$298

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

Mon 8/11

5:45 am-9:09 am

1 stop6h 24m

Phoenix Sky Harbor Intl

Mon 8/18

1:37 pm-11:48 pm

1 stop7h 11m

$314

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Phoenix from

How to get the cheapest flight ticket from Knoxville to Phoenix Sky Harbor Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, January is the cheapest month to fly from Knoxville to Phoenix Sky Harbor Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $213. If you are unable to visit Phoenix Sky Harbor Intl Airport during the month of January, then departing from Knoxville during the month July is also very affordable. Most momondo users find prices during this month for around $228.

What is the cheapest day to depart on your flight to Phoenix Sky Harbor Intl Airport?

On average, the least expensive day to fly to Phoenix Sky Harbor Intl Airport from Knoxville is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $201. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $361. These prices are subject to change though, so be sure to set up a Price Alert for flights to Phoenix Sky Harbor Intl Airport.

What is the cheapest time of day to depart on your flight to Phoenix Sky Harbor Intl Airport?

In the morning is the cheapest time of day to fly from Knoxville to Phoenix Sky Harbor Intl Airport when you can find flight prices for as low as $211. Flying to Phoenix Sky Harbor Intl Airport in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $300. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Knoxville McGhee Tyson to Phoenix Sky Harbor Intl flight route?

Fly from Knoxville McGhee Tyson to Phoenix Sky Harbor Intl for the best Knoxville McGhee Tyson - Phoenix Sky Harbor Intl flight prices

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

You are more likely to see cheaper flights to Phoenix Sky Harbor Intl Airport from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix Sky Harbor Intl Airport for around $331 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phoenix Sky Harbor Intl Airport from Knoxville for as low as $209 on momondo.

What cabin class options are available on Knoxville McGhee Tyson to Phoenix Sky Harbor Intl flights?

There are 1 cabin classes available to choose from on Knoxville McGhee Tyson to Phoenix Sky Harbor Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Knoxville to Phoenix Sky Harbor Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Knoxville to Phoenix Sky Harbor Intl Airport.

How have Knoxville to Phoenix Sky Harbor Intl Airport flight prices changed over time?

As of July 2025, prices for Knoxville to Phoenix Sky Harbor Intl Airport flights are approximately 57% cheaper when compared to flights at the same time last year.

When to book flights from Knoxville to Phoenix Sky Harbor Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Phoenix Sky Harbor Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to Phoenix Sky Harbor Intl Airport (TYS to PHX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Phoenix Sky Harbor Intl Airport

Best Price Found

$64

Fastest flight time

3h 49m

Direct flights

Mon, Tue, Wed, Fri and Sat
The best one-way flight to Phoenix Sky Harbor Intl Airport from Knoxville in the past 72 hours is $64. The best round-trip flight deal from Knoxville to Phoenix Sky Harbor Intl Airport found on momondo in the last 72 hours is $122.
The fastest flight from Knoxville to Phoenix Sky Harbor Intl Airport takes 3h 49m
Direct flights go from Knoxville to Phoenix Sky Harbor Intl Airport on Monday, Tuesday, Wednesday, Friday and Saturday. The only airline offering direct flights is Allegiant Air.
Search flight deals

  • How far is Knoxville McGhee Tyson to Phoenix Sky Harbor Intl by plane?

    Knoxville McGhee Tyson and Phoenix Sky Harbor Intl are 1597.8 mi apart from one another. A reasonable flight in good conditions will take 3h 49m.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Phoenix Sky Harbor Intl Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Phoenix Sky Harbor Intl Airport were last updated today.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Phoenix Sky Harbor Intl Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Phoenix Sky Harbor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Phoenix Sky Harbor Intl Airport.

  • What documentation or ID do you need to fly to Phoenix Sky Harbor Intl Airport?

    The necessary travel and health documents for your Phoenix Sky Harbor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Knoxville to Phoenix Sky Harbor Intl Airport?

  • What is the most popular airline from Knoxville to Phoenix Sky Harbor Intl Airport?

Best airlines flying from Knoxville to Phoenix Sky Harbor Intl Airport

Compare and see reviews for airlines that fly from Knoxville to Phoenix Sky Harbor Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $114Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
DeltaPriceFrom $128Free CancellationRating
8.0
7,981 reviews
Search Delta flights
FrontierPriceFrom $137Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
American AirlinesPriceFrom $255Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Allegiant Air Flights From Knoxville to Phoenix Sky Harbor Intl Airport

    Allegiant Air flight deals from Knoxville to Phoenix Sky Harbor Intl Airport start from $114 round-trip. Over the 1 Allegiant Air flight for this route in a normal week, average airfare is usually $232 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Phoenix?

Book flights to Phoenix if you plan to visit one of these locations
Scottsdale
Mesa
Tempe
Glendale
Chandler
Gilbert
Surprise
Peoria
Casa Grande
Buckeye
Wickenburg
Apache Junction
Payson
Goodyear
Paradise Valley
Camp Verde
Avondale
Fountain Hills
Cave Creek
Litchfield Park

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Phoenix?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Knoxville to Phoenix for you.

Can I find flights from Knoxville to Phoenix with flexible booking policies on momondo?

momondo does allow users to show only those flights to Phoenix from Knoxville which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Knoxville to Phoenix?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Phoenix from Knoxville.

I’m not ready to book a flight from Knoxville to Phoenix right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Knoxville to Phoenix flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Phoenix Sky Harbor Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Phoenix