Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Knoxville to Phoenix from $65

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 12/8. 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

Enter your travel dates to find the best prices.
Frontier Logo
4:52 pm - 12:44 amTYS-PHX
9h 52m1 stop
Frontier Logo
4:32 pm - 3:31 pmPHX-TYS
20h 59m1 stop
$158Frontier
Find Deal
jue., dic. 4 - mié., dic. 17
Allegiant Air Logo
10:00 am - 12:26 pmTYS-PHX
4h 26mnonstop
Allegiant Air Logo
1:16 pm - 6:39 pmPHX-TYS
3h 23mnonstop
$161Allegiant Air
Find Deal
jue., ene. 29 - dom., feb. 1
Multiple Airlines Logo
10:00 am - 12:26 pmTYS-PHX
4h 26mnonstop
Multiple Airlines Logo
10:31 pm - 3:28 pmPHX-TYS
14h 57m1 stop
$171Multiple Airlines
Find Deal
jue., ene. 15 - dom., ene. 18
Allegiant Air Logo
10:00 am - 12:26 pmTYS-PHX
4h 26mnonstop
Allegiant Air Logo
1:16 pm - 6:39 pmPHX-TYS
3h 23mnonstop
$174Allegiant Air
Find Deal
jue., ene. 15 - dom., ene. 18
Multiple Airlines Logo
2:01 pm - 4:06 pmTYS-PHX
4h 05mnonstop
Multiple Airlines Logo
4:32 pm - 3:31 pmPHX-TYS
20h 59m1 stop
$197Multiple Airlines
Find Deal
jue., dic. 4 - mié., dic. 17
Allegiant Air Logo
2:14 pm - 4:27 pmTYS-PHX
4h 13mnonstop
Allegiant Air Logo
5:17 pm - 10:37 pmPHX-TYS
3h 20mnonstop
$216Allegiant Air
Find Deal
jue., nov. 20 - dom., nov. 23
American Airlines Logo
7:54 am - 3:11 pmTYS-PHX
9h 17m1 stop
American Airlines Logo
7:28 am - 3:46 pmPHX-TYS
6h 18m1 stop
$261American Airlines
Find Deal
mar., ene. 13 - mar., ene. 20
United Airlines Logo
11:10 am - 3:57 pmTYS-PHX
6h 47m1 stop
United Airlines Logo
9:00 am - 7:50 pmPHX-TYS
8h 50m2 stops
$290United Airlines
Find Deal
mar., ene. 13 - mar., ene. 20
American Airlines Logo
6:00 am - 10:19 amTYS-PHX
6h 19m1 stop
American Airlines Logo
8:25 am - 3:46 pmPHX-TYS
5h 21m1 stop
$301American Airlines
Find Deal
jue., ene. 29 - mar., feb. 3
Delta Logo
6:00 pm - 12:16 amTYS-PHX
8h 16m1 stop
Delta Logo
6:00 am - 2:50 pmPHX-TYS
6h 50m1 stop
$309Delta
Find Deal
mar., dic. 9 - sáb., dic. 13

Frontier flights from Knoxville to Phoenix Sky Harbor Intl Airport

Our best Frontier deals on Knoxville to Phoenix Sky Harbor Intl Airport flight tickets
Frontier
Dec 4
TYS4:52 pmKnoxville McGhee Tyson
9h 52m
1 stop
PHX12:44 amPhoenix Sky Harbor Intl
Dec 17
PHX4:32 pmPhoenix Sky Harbor Intl
20h 59m
1 stop
TYS3:31 pmKnoxville McGhee Tyson
$158
Find similar
Frontier
Dec 4
TYS4:52 pmKnoxville McGhee Tyson
9h 52m
1 stop
PHX12:44 amPhoenix Sky Harbor Intl
Dec 17
PHX7:43 pmPhoenix Sky Harbor Intl
17h 48m
2 stops
TYS3:31 pmKnoxville McGhee Tyson
$221
Find similar
Frontier
Nov 13
TYS7:17 pmKnoxville McGhee Tyson
26h 16m
1 stop
PHX7:33 pmPhoenix Sky Harbor Intl
Nov 15
PHX6:11 pmPhoenix Sky Harbor Intl
22h 11m
1 stop
TYS6:22 pmKnoxville McGhee Tyson
$234
Find similar

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
Jan 29
TYS10:00 amKnoxville McGhee Tyson
4h 26m
PHX12:26 pmPhoenix Sky Harbor Intl
Feb 1
PHX1:16 pmPhoenix Sky Harbor Intl
3h 23m
TYS6:39 pmKnoxville McGhee Tyson
$161
Find similar
Allegiant Air
Jan 15
TYS10:00 amKnoxville McGhee Tyson
4h 26m
PHX12:26 pmPhoenix Sky Harbor Intl
Jan 18
PHX1:16 pmPhoenix Sky Harbor Intl
3h 23m
TYS6:39 pmKnoxville McGhee Tyson
$174
Find similar
Allegiant Air
Nov 20
TYS2:14 pmKnoxville McGhee Tyson
4h 13m
PHX4:27 pmPhoenix Sky Harbor Intl
Nov 23
PHX5:17 pmPhoenix Sky Harbor Intl
3h 20m
TYS10:37 pmKnoxville McGhee Tyson
$216
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 noviembre 3, 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

jue. 12/4

4:52 pm-12:44 am

1 stop9h 52m

Phoenix Sky Harbor Intl

mié. 12/17

4:32 pm-3:31 pm

1 stop20h 59m

$158

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

jue. 1/29

10:00 am-12:26 pm

Nonstop4h 26m

Phoenix Sky Harbor Intl

dom. 2/1

1:16 pm-6:39 pm

Nonstop3h 23m

$161

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

jue. 1/15

10:00 am-12:26 pm

Nonstop4h 26m

Phoenix Sky Harbor Intl

dom. 1/18

10:31 pm-3:28 pm

1 stop14h 57m

$171

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

jue. 1/15

10:00 am-12:26 pm

Nonstop4h 26m

Phoenix Sky Harbor Intl

dom. 1/18

1:16 pm-6:39 pm

Nonstop3h 23m

$174

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

jue. 12/4

2:01 pm-4:06 pm

Nonstop4h 05m

Phoenix Sky Harbor Intl

mié. 12/17

4:32 pm-3:31 pm

1 stop20h 59m

$197

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

jue. 11/20

2:14 pm-4:27 pm

Nonstop4h 13m

Phoenix Sky Harbor Intl

dom. 11/23

5:17 pm-10:37 pm

Nonstop3h 20m

$216

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

mar. 1/13

7:54 am-3:11 pm

1 stop9h 17m

Phoenix Sky Harbor Intl

mar. 1/20

7:28 am-3:46 pm

1 stop6h 18m

$261

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

mar. 1/13

11:10 am-3:57 pm

1 stop6h 47m

Phoenix Sky Harbor Intl

mar. 1/20

9:00 am-7:50 pm

2 stops8h 50m

$290

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

jue. 1/29

6:00 am-10:19 am

1 stop6h 19m

Phoenix Sky Harbor Intl

mar. 2/3

8:25 am-3:46 pm

1 stop5h 21m

$301

KnoxvillePhoenix

TYS - PHX

TYSPHX

Knoxville McGhee Tyson

mar. 12/9

6:00 pm-12:16 am

1 stop8h 16m

Phoenix Sky Harbor Intl

sáb. 12/13

6:00 am-2:50 pm

1 stop6h 50m

$309

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, September 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 $205. If you are unable to visit Phoenix Sky Harbor Intl Airport during the month of September, then departing from Knoxville during the month January 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 Friday. momondo users have found tickets for Friday departures for as low as $197. 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 $228. 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 $316 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 $219 on momondo.

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

There is only 1 cabin class 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 November 2025, prices for Knoxville to Phoenix Sky Harbor Intl Airport flights are approximately 68% more expensive 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

$129

Fastest flight time

4h 05m

Direct flights

Mon, Wed, Fri and Sun
The best one-way flight to Phoenix Sky Harbor Intl Airport from Knoxville in the past 72 hours is $129. The best round-trip flight deal from Knoxville to Phoenix Sky Harbor Intl Airport found on momondo in the last 72 hours is $227.
The fastest flight from Knoxville to Phoenix Sky Harbor Intl Airport takes 4h 05m
Direct flights go from Knoxville to Phoenix Sky Harbor Intl Airport on Monday, Wednesday, Friday and Sunday. 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 4h 05m.

  • 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 $115Free CancellationRating
7.2
694 reviews
Search Allegiant Air flights
DeltaPriceFrom $128Free CancellationRating
7.9
8,002 reviews
Search Delta flights
United AirlinesPriceFrom $220Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
American AirlinesPriceFrom $250Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights

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
Peoria
Surprise
Casa Grande
Goodyear
Buckeye
Apache Junction
Payson
Wickenburg
Avondale
Paradise Valley
Camp Verde
Fountain Hills
Litchfield Park
Cave Creek

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
mié. 12/3
mié. 12/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Phoenix