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Cheap flights from Knoxville to Philadelphia from $119

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 9/27. 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

Logo
12:08 pm - 12:17 amTYS-PHL
12h 09m1 stop
Logo
5:00 am - 11:18 amPHL-TYS
6h 18m1 stop
$216
Find Deal
Thu, Sep 25 - Sun, Sep 28
Logo
4:31 pm - 11:47 pmTYS-PHL
7h 16m1 stop
Logo
5:25 am - 11:18 amPHL-TYS
5h 53m1 stop
$223
Find Deal
Sat, Sep 6 - Sun, Sep 14
Delta Logo
6:14 pm - 12:56 amTYS-PHL
6h 42m1 stop
Delta Logo
2:35 pm - 7:03 pmPHL-TYS
4h 28m1 stop
$229Delta
Find Deal
Sat, Aug 30 - Tue, Sep 2
Delta Logo
7:50 am - 11:52 amTYS-PHL
4h 02m1 stop
Delta Logo
6:00 am - 11:34 amPHL-TYS
5h 34m1 stop
$237Delta
Find Deal
Thu, Aug 28 - Mon, Sep 1
Frontier Logo
8:36 pm - 4:54 amTYS-PHL
8h 18m1 stop
Frontier Logo
6:25 am - 6:25 pmPHL-TYS
12h 00m1 stop
$238Frontier
Find Deal
Thu, Aug 28 - Mon, Sep 1
Logo
7:35 pm - 11:59 pmTYS-PHL
28h 24m2 stops
Logo
5:00 am - 11:18 amPHL-TYS
6h 18m1 stop
$239
Find Deal
Thu, Sep 25 - Sun, Sep 28
Logo
7:35 pm - 11:59 pmTYS-PHL
28h 24m2 stops
Logo
5:00 am - 11:18 amPHL-TYS
6h 18m1 stop
$242
Find Deal
Thu, Sep 25 - Sun, Sep 28
Logo
6:00 am - 2:56 pmTYS-PHL
8h 56m2 stops
Logo
5:05 am - 8:02 pmPHL-TYS
14h 57m1 stop
$244
Find Deal
Fri, Aug 15 - Sun, Aug 17
Logo
9:12 pm - 9:56 amTYS-PHL
12h 44m1 stop
Logo
5:45 am - 6:08 pmPHL-TYS
12h 23m1 stop
$245
Find Deal
Thu, Aug 21 - Sat, Aug 23
Delta Logo
6:14 pm - 10:20 pmTYS-PHL
4h 06m1 stop
Delta Logo
5:25 am - 11:03 amPHL-TYS
5h 38m1 stop
$267Delta
Find Deal
Fri, Aug 15 - Mon, Aug 18

American Airlines flights from Knoxville to Philadelphia

Our best American Airlines deals on Knoxville to Philadelphia flight tickets
American Airlines
Aug 5
TYS7:35 amKnoxville McGhee Tyson
1h 56m
PHL9:31 amPhiladelphia
Aug 12
PHL6:45 pmPhiladelphia
2h 10m
TYS8:55 pmKnoxville McGhee Tyson
$411
Find similar
American Airlines
Aug 5
TYS9:05 amKnoxville McGhee Tyson
3h 43m
1 stop
PHL12:48 pmPhiladelphia
Aug 12
PHL6:45 pmPhiladelphia
2h 10m
TYS8:55 pmKnoxville McGhee Tyson
$421
Find similar
American Airlines
Aug 5
TYS11:11 amKnoxville McGhee Tyson
6h 12m
1 stop
PHL5:23 pmPhiladelphia
Aug 12
PHL7:25 amPhiladelphia
5h 38m
1 stop
TYS1:03 pmKnoxville McGhee Tyson
$431
Find similar

United Airlines flights from Knoxville to Philadelphia

Our best United Airlines deals on Knoxville to Philadelphia flight tickets
United Airlines
Aug 12
TYS7:00 amKnoxville McGhee Tyson
7h 08m
2 stops
PHL2:08 pmPhiladelphia
Aug 13
PHL7:59 pmPhiladelphia
4h 00m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$452
Find similar
United Airlines
Aug 12
TYS7:00 amKnoxville McGhee Tyson
7h 08m
2 stops
PHL2:08 pmPhiladelphia
Aug 13
PHL6:05 amPhiladelphia
7h 16m
2 stops
TYS1:21 pmKnoxville McGhee Tyson
$457
Find similar
United Airlines
Aug 13
TYS5:45 amKnoxville McGhee Tyson
4h 10m
1 stop
PHL9:55 amPhiladelphia
Aug 17
PHL6:05 amPhiladelphia
17h 54m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$499
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 July 31, 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 9/25

12:08 pm-12:17 am

1 stop12h 09m

Philadelphia

Sun 9/28

5:00 am-11:18 am

1 stop6h 18m

$216

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Sat 9/6

4:31 pm-11:47 pm

1 stop7h 16m

Philadelphia

Sun 9/14

5:25 am-11:18 am

1 stop5h 53m

$223

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Sat 8/30

6:14 pm-12:56 am

1 stop6h 42m

Philadelphia

Tue 9/2

2:35 pm-7:03 pm

1 stop4h 28m

$229

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 8/28

7:50 am-11:52 am

1 stop4h 02m

Philadelphia

Mon 9/1

6:00 am-11:34 am

1 stop5h 34m

$237

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 8/28

8:36 pm-4:54 am

1 stop8h 18m

Philadelphia

Mon 9/1

6:25 am-6:25 pm

1 stop12h 00m

$238

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 9/25

7:35 pm-11:59 pm

2 stops28h 24m

Philadelphia

Sun 9/28

5:00 am-11:18 am

1 stop6h 18m

$239

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 9/25

7:35 pm-11:59 pm

2 stops28h 24m

Philadelphia

Sun 9/28

5:00 am-11:18 am

1 stop6h 18m

$242

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Fri 8/15

6:00 am-2:56 pm

2 stops8h 56m

Philadelphia

Sun 8/17

5:05 am-8:02 pm

1 stop14h 57m

$244

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 8/21

9:12 pm-9:56 am

1 stop12h 44m

Philadelphia

Sat 8/23

5:45 am-6:08 pm

1 stop12h 23m

$245

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Fri 8/15

6:14 pm-10:20 pm

1 stop4h 06m

Philadelphia

Mon 8/18

5:25 am-11:03 am

1 stop5h 38m

$267

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 July. Flight prices, which tend to average around $355, are often lower during this time because this is during the off-season. The month of August is another great option to travel to Philadelphia, with average flight prices from Knoxville averaging around $398.

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 $484. 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 $850.

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 $1,248.

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 $432 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 $319 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 19% 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 July 2025, prices for Knoxville to Philadelphia flights are approximately 55% cheaper 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

$119

Fastest flight time

1h 55m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from Knoxville in the past 72 hours is $119. The best round-trip flight deal from Knoxville to Philadelphia found on momondo in the last 72 hours is $216.
The fastest flight from Knoxville to Philadelphia takes 1h 55m
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 4h 02m.

  • 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
FrontierPriceFrom $63Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
United AirlinesPriceFrom $195Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
DeltaPriceFrom $198Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $280Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • American Airlines Flights From Knoxville to Philadelphia

    Across 18 American Airlines flights from Knoxville to Philadelphia this week, the average price was $440, with the best American Airlines deals starting from $280 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
Rehoboth Beach
Cape May
Ocean City
Wildwood Crest
King of Prussia
Reading
Dewey Beach
Newark
Dover
North Wildwood
Cherry Hill
Lewes
Avalon
Stone Harbor
Vineland
Exton
Essington
New Castle
Pottstown

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.

An easier way to manage your Philadelphia trip

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