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Cheap flights from Knoxville to Philadelphia from $111

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 Philadelphia departing on 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Knoxville to Philadelphia

Cheap round-trip flights

Multiple Airlines Logo
9:15 pm - 11:52 amTYS-PHL
14h 37m1 stop
Multiple Airlines Logo
10:32 pm - 8:16 amPHL-TYS
9h 44m1 stop
$211Multiple Airlines
Find Deal
Thu, Oct 23 - Fri, Nov 7
Frontier Logo
8:17 pm - 5:19 amTYS-PHL
9h 02m1 stop
Frontier Logo
6:42 am - 7:32 pmPHL-TYS
12h 50m1 stop
$225Frontier
Find Deal
Fri, Oct 24 - Mon, Oct 27
Multiple Airlines Logo
12:08 pm - 11:56 amTYS-PHL
23h 48m1 stop
Multiple Airlines Logo
5:00 am - 3:41 pmPHL-TYS
10h 41m1 stop
$228Multiple Airlines
Find Deal
Thu, Sep 25 - Sat, Sep 27
Multiple Airlines Logo
1:23 pm - 8:53 pmTYS-PHL
7h 30m1 stop
Multiple Airlines Logo
5:33 am - 3:36 pmPHL-TYS
10h 03m1 stop
$230Multiple Airlines
Find Deal
Fri, Oct 24 - Wed, Oct 29
Multiple Airlines Logo
3:21 pm - 1:02 pmTYS-PHL
21h 41m1 stop
Multiple Airlines Logo
5:33 am - 8:25 pmPHL-TYS
14h 52m1 stop
$234Multiple Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 5
Multiple Airlines Logo
3:21 pm - 1:02 pmTYS-PHL
21h 41m1 stop
Multiple Airlines Logo
5:20 am - 1:03 pmPHL-TYS
7h 43m1 stop
$238Multiple Airlines
Find Deal
Wed, Oct 1 - Mon, Oct 6
Multiple Airlines Logo
5:26 pm - 12:53 pmTYS-PHL
19h 27m2 stops
Multiple Airlines Logo
5:05 am - 10:33 amPHL-TYS
29h 28m1 stop
$241Multiple Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
Multiple Airlines Logo
9:06 pm - 4:11 pmTYS-PHL
19h 05m1 stop
Multiple Airlines Logo
8:08 pm - 9:56 amPHL-TYS
13h 48m1 stop
$242Multiple Airlines
Find Deal
Fri, Oct 10 - Sun, Oct 19
American Airlines Logo
10:43 am - 5:43 pmTYS-PHL
7h 00m1 stop
American Airlines Logo
7:15 pm - 11:50 pmPHL-TYS
4h 35m1 stop
$251American Airlines
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Sat, Oct 25 - Sat, Oct 25
Frontier Logo
8:17 pm - 10:34 amTYS-PHL
14h 17m2 stops
Frontier Logo
8:15 am - 7:32 pmPHL-TYS
11h 17m2 stops
$268Frontier
Find Deal
Mon, Oct 13 - Mon, Oct 20

American Airlines flights from Knoxville to Philadelphia

Our best American Airlines deals on Knoxville to Philadelphia flight tickets
American Airlines
Oct 25
TYS10:43 amKnoxville McGhee Tyson
7h 00m
1 stop
PHL5:43 pmPhiladelphia
Oct 25
PHL7:15 pmPhiladelphia
4h 35m
1 stop
TYS11:50 pmKnoxville McGhee Tyson
$251
Find similar
American Airlines
Sep 30
TYS7:18 amKnoxville McGhee Tyson
2h 02m
PHL9:20 amPhiladelphia
Oct 4
PHL11:55 amPhiladelphia
2h 14m
TYS2:09 pmKnoxville McGhee Tyson
$411
Find similar
American Airlines
Sep 30
TYS7:14 amKnoxville McGhee Tyson
7h 33m
1 stop
PHL2:47 pmPhiladelphia
Oct 4
PHL11:55 amPhiladelphia
2h 14m
TYS2:09 pmKnoxville McGhee Tyson
$421
Find similar

United Airlines flights from Knoxville to Philadelphia

Our best United Airlines deals on Knoxville to Philadelphia flight tickets
United Airlines
Sep 30
TYS7:00 amKnoxville McGhee Tyson
7h 16m
1 stop
PHL2:16 pmPhiladelphia
Oct 4
PHL5:01 pmPhiladelphia
5h 49m
1 stop
TYS10:50 pmKnoxville McGhee Tyson
$431
Find similar
United Airlines
Sep 30
TYS7:00 amKnoxville McGhee Tyson
7h 04m
2 stops
PHL2:04 pmPhiladelphia
Oct 8
PHL10:32 amPhiladelphia
4h 13m
1 stop
TYS2:45 pmKnoxville McGhee Tyson
$436
Find similar
United Airlines
Sep 30
TYS7:00 amKnoxville McGhee Tyson
11h 57m
2 stops
PHL6:57 pmPhiladelphia
Oct 4
PHL3:00 pmPhiladelphia
7h 50m
2 stops
TYS10:50 pmKnoxville McGhee Tyson
$441
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to Philadelphia 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 September 17, 2025.
Use the filters below to find and compare flights from Knoxville to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 10/23

9:15 pm-11:52 am

1 stop14h 37m

Philadelphia

Fri 11/7

10:32 pm-8:16 am

1 stop9h 44m

$211

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Fri 10/24

8:17 pm-5:19 am

1 stop9h 02m

Philadelphia

Mon 10/27

6:42 am-7:32 pm

1 stop12h 50m

$225

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 9/25

12:08 pm-11:56 am

1 stop23h 48m

Philadelphia

Sat 9/27

5:00 am-3:41 pm

1 stop10h 41m

$228

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Fri 10/24

1:23 pm-8:53 pm

1 stop7h 30m

Philadelphia

Wed 10/29

5:33 am-3:36 pm

1 stop10h 03m

$230

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Wed 10/1

3:21 pm-1:02 pm

1 stop21h 41m

Philadelphia

Sun 10/5

5:33 am-8:25 pm

1 stop14h 52m

$234

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Wed 10/1

3:21 pm-1:02 pm

1 stop21h 41m

Philadelphia

Mon 10/6

5:20 am-1:03 pm

1 stop7h 43m

$238

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Mon 10/13

5:26 pm-12:53 pm

2 stops19h 27m

Philadelphia

Mon 10/20

5:05 am-10:33 am

1 stop29h 28m

$241

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Fri 10/10

9:06 pm-4:11 pm

1 stop19h 05m

Philadelphia

Sun 10/19

8:08 pm-9:56 am

1 stop13h 48m

$242

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Sat 10/25

10:43 am-5:43 pm

1 stop7h 00m

Philadelphia

Sat 10/25

7:15 pm-11:50 pm

1 stop4h 35m

$251

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Mon 10/13

8:17 pm-10:34 am

2 stops14h 17m

Philadelphia

Mon 10/20

8:15 am-7:32 pm

2 stops11h 17m

$268

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Philadelphia from

How to get the cheapest flight ticket from Knoxville to Philadelphia

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 Philadelphia?

The cheapest month to fly to Philadelphia from Knoxville is in January. Flight prices, which tend to average around $405, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Philadelphia, with average flight prices from Knoxville averaging around $430.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Knoxville to Philadelphia is on a Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $483. On the other hand, Monday is the most expensive day to depart from Knoxville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $861.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Knoxville to Philadelphia in the evening for as low as $331. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is at noon when prices are around $1,016.

What is the cheapest Knoxville McGhee Tyson to Philadelphia flight route?

Fly from Knoxville McGhee Tyson to Philadelphia for the best Knoxville McGhee Tyson - Philadelphia flight prices

How far in advance should I book a flight to Philadelphia?

You are more likely to see cheaper flights to Philadelphia from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $457 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Knoxville for as low as $355 on momondo.

What cabin class options are available on Knoxville McGhee Tyson to Philadelphia flights?

There are 4 cabin classes available to choose from on Knoxville McGhee Tyson to Philadelphia 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 Philadelphia flights?

You could potentially save up to 3% on your flight if you consider stops on a Knoxville to Philadelphia flight.

How have Knoxville to Philadelphia flight prices changed over time?

As of September 2025, prices for Knoxville to Philadelphia flights are approximately 53% more expensive when compared to flights at the same time last year.

When to book flights from Knoxville to Philadelphia

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

Cheap Knoxville to Philadelphia (TYS to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Philadelphia

Best Price Found

$190

Fastest flight time

1h 48m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from Knoxville in the past 72 hours is $190. The best round-trip flight deal from Knoxville to Philadelphia found on momondo in the last 72 hours is $425.
The fastest flight from Knoxville to Philadelphia takes 1h 48m
Direct flights go from Knoxville to Philadelphia every day.
There is 1 airport near Philadelphia: Philadelphia (PHL)
Search flight deals

  • How far is Knoxville McGhee Tyson to Philadelphia by plane?

    A flight from Knoxville McGhee Tyson to Philadelphia will travel around 550.8 mi. In terms of flight time, this usually takes a little over 6h 04m.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Philadelphia Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Philadelphia Airport were last updated today.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Philadelphia Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Philadelphia 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 Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The necessary travel and health documents for your Philadelphia 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 Philadelphia?

  • What is the most popular airline from Knoxville to Philadelphia?

Best airlines flying from Knoxville to Philadelphia

Compare and see reviews for airlines that fly from Knoxville to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $198Free CancellationRating
7.9
7,961 reviews
Search Delta flights
American AirlinesPriceFrom $347Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • American Airlines Flights From Knoxville to Philadelphia

    Across 22 American Airlines flights from Knoxville to Philadelphia this week, the average price was $454, with the best American Airlines deals starting from $347 round-trip. 10,000 users have rated American Airlines on momondo, with an average score of 7.2/10.

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Cape May
Rehoboth Beach
Ocean City
Wildwood Crest
King of Prussia
Dewey Beach
Reading
Newark
Cherry Hill
North Wildwood
Dover
Avalon
Lewes
Stone Harbor
Vineland
Essington
Pottstown
New Castle
West Chester

Why use momondo?

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

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 Philadelphia for you.

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

Yes. momondo allows you to filter the results for Knoxville to Philadelphia flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Knoxville to Philadelphia.

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

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from Knoxville and alert you when they change.

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