HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Philadelphia

$54+ Cheap flights from Knoxville to Philadelphia (TYS - PHL)

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PHL
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Knoxville to Philadelphia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Philadelphia are usually found in January or November, booked 77 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Find flight deals from Knoxville to Philadelphia

Cheapest flights from Knoxville to Philadelphia
Explore the most affordable flight options available from Knoxville to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Frontier deal was found by Cheapflights users on 10/12. 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.
Fri 10/248:17 pmTYS - PHL
1 stop9h 02mFrontier
Mon 10/276:42 amPHL - TYS
1 stop12h 50mFrontier
Deal found 10/12$191
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Fri 12/55:34 pmTYS - PHL
1 stop7h 04mMultiple Airlines
Sun 12/75:00 pmPHL - TYS
1 stop15h 33mMultiple Airlines
Deal found 10/13$196
This Kiwi.com deal was found by Cheapflights users on 10/14. 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.
Mon 11/109:27 pmTYS - PHL
1 stop13h 03mMultiple Airlines
Mon 11/1712:35 pmPHL - TYS
1 stop10h 39mMultiple Airlines
Deal found 10/14$208
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Fri 11/79:09 pmTYS - PHL
1 stop12h 21mMultiple Airlines
Mon 11/108:40 amPHL - TYS
1 stop14h 34mMultiple Airlines
Deal found 10/13$221
This Kiwi.com deal was found by Cheapflights users on 10/11. 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.
Tue 11/1111:24 amTYS - PHL
1 stop26h 51mMultiple Airlines
Mon 11/1710:32 pmPHL - TYS
1 stop16h 42mMultiple Airlines
Deal found 10/11$226
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Tue 11/186:06 amTYS - PHL
1 stop8h 47mAmerican Airlines
Tue 11/184:04 pmPHL - TYS
1 stop5h 20mAmerican Airlines
Deal found 10/12$251

Cheap flight deals from Knoxville to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Philadelphia (PHL). 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$191
(Frontier)

One-way from

$54
(Frontier)

Popular in

October

Cheapest in

January

Average price

$490

Good round-trip deal

$419 or less

Good one-way deal

$308 or less
Provider with most accurate pricing for Knoxville McGhee Tyson-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Philadelphia flights.
Search Deals
From Knoxville McGhee Tyson to Philadelphia
Search Deals
One-way flight from Knoxville McGhee Tyson to Philadelphia
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Knoxville McGhee Tyson to Philadelphia.
Search Deals
Price to beat on a one-way flight from Knoxville McGhee Tyson to Philadelphia.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from Knoxville to Philadelphia that are best for you.

Fly from

Knoxville

Fly to

Philadelphia

Route

Depart

Return

Price

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

$191

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Tue 11/11

4:04 pm-8:59 pm

1 stop28h 55m

Philadelphia

Mon 11/17

12:35 pm-11:14 pm

1 stop10h 39m

$231

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Mon 11/10

5:22 pm-10:30 am

2 stops17h 08m

Philadelphia

Mon 11/17

1:19 pm-6:37 pm

1 stop5h 18m

$243

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Wed 10/29

4:26 pm-11:52 am

1 stop19h 26m

Philadelphia

Tue 11/4

3:10 pm-3:42 pm

1 stop24h 32m

$271

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Tue 10/28

11:23 am-12:53 pm

2 stops25h 30m

Philadelphia

Sat 11/1

7:30 pm-1:26 pm

1 stop17h 56m

$337

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Wed 11/26

5:52 pm-11:47 pm

1 stop5h 55m

Philadelphia

Wed 12/3

6:52 pm-9:00 pm

Nonstop2h 08m

$366

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Sat 11/22

3:53 pm-9:41 pm

1 stop5h 48m

Philadelphia

Thu 11/27

8:00 am-1:44 pm

1 stop5h 44m

$375

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Tue 11/18

11:24 am-12:57 pm

3 stops25h 33m

Philadelphia

Wed 11/19

3:10 pm-4:03 pm

3 stops24h 53m

$381

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 12/11

4:47 pm-4:47 am

1 stop12h 00m

$60

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Mon 12/8

4:47 pm-4:47 am

1 stop12h 00m

$60

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 16 results
1
2

Compare providers for flights from Knoxville to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Philadelphia in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Knoxville 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 Knoxville to Philadelphia

How far ahead should I book a flight from Knoxville to Philadelphia?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Philadelphia. Price data was last updated on October 10, 2025.

To ensure you get the cheapest price possible for a flight from Knoxville to Philadelphia, you should look to book at least 71 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 Knoxville to Philadelphia?

Currently, July is the cheapest month in which you can book a flight from Knoxville to Philadelphia (average of $40). Flying from Knoxville to Philadelphia in December is currently the most expensive (average of $165). 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 TYS to PHL?

Find hourly flight availability from Knoxville to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

It’s optimal to fly from Knoxville to Philadelphia in the evening. By choosing this option you can save up to 67% on the cost of your flight, compared to a flight at noon.

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated October 14, 2025.
Read through reviews of airlines operating flights from Knoxville to Philadelphia, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,045 reviews

Entertainment

6.9

Comfort

7.2

Crew

8.0

Food

6.4

Boarding

7.5

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,045 reviews
American Airlines
7.2
Good
11,045 reviews

Entertainment

6.9

Comfort

7.2

Crew

8.0

Food

6.4

Boarding

7.5

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Knoxville to Philadelphia?

    If you wish to fly to Philadelphia from Knoxville, then you need to book flights from Knoxville McGhee Tyson to Philadelphia. There are 7 flights from McGhee Tyson (TYS) to Philadelphia (PHL) per day to choose from. Flights to Philadelphia from McGhee Tyson are available from 1 airline, which means you should have some options if you want to compare airfare deals. 1h 48m is how long a nonstop flight from Knoxville to Philadelphia typically takes.

  • How popular is this Knoxville to Philadelphia flight route?

    Flights from Knoxville McGhee Tyson to Philadelphia have been viewed 15 times in the past calendar month.

  • How long is the flight from Knoxville to Philadelphia?

    For as low as $191, Frontier can have you in Philadelphia from Knoxville in 9h 02m. The distance from Knoxville to Philadelphia is about 553 mi.

  • What are the cheapest airlines flying from Knoxville to Philadelphia round-trip?

    Flying on Delta is currently your cheapest option to Philadelphia, with prices starting at $198. Another option worth looking into is American Airlines, starting at $355 round trip. Users have found that Delta is 56% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Knoxville to Philadelphia?

    Consider PSA Airlines (89%), American Airlines (87%) or Piedmont Airlines (87%) when booking your flight. These represent the most reliable airlines when flying from Knoxville to Philadelphia.

  • What are the cheapest flights from Knoxville to Philadelphia?

    Looking for the cheapest flight from Knoxville to Philadelphia? While on average our users pay $534, our data indicates the cheapest price to be $204. The most popular route (Knoxville McGhee Tyson - Philadelphia), is priced around $258.

  • Can I find deals for flights from Knoxville to Philadelphia that include hotel bookings?

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

  • How can I find direct flights from Knoxville to Philadelphia?

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

  • Can I find deals for business class flights from Knoxville to Philadelphia?

    Yes. Cheapflights offers flight deals from Knoxville to Philadelphia 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 Knoxville to Philadelphia?

    Currently, July is the cheapest month in which you can book a flight from Knoxville to Philadelphia (average of $40). Flying from Knoxville to Philadelphia in December is currently the most expensive (average of $165). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
King of Prussia
Pottstown
Reading
Ocean City
Cherry Hill
Dewey Beach
Ephrata
Camden
Vineland
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Knoxville to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to John F Kennedy Intl flights
Nashville to LaGuardia flights
Nashville to Newark flights
Knoxville to LaGuardia flights
Memphis to John F Kennedy Intl flights
Memphis to Newark flights
Chattanooga to LaGuardia flights
Memphis to LaGuardia flights
Chattanooga to John F Kennedy Intl flights
Knoxville to John F Kennedy Intl flights
Nashville to Reagan-National flights
Memphis to Reagan-National flights
Nashville to Dulles Intl flights
Chattanooga to Newark flights
Memphis to Dulles Intl flights
Knoxville to Newark flights
Nashville to Philadelphia flights
Knoxville to Dulles Intl flights
Chattanooga to Dulles Intl flights
Memphis to Philadelphia flights
Knoxville to Reagan-National flights
Chattanooga to Reagan-National flights
Memphis to Pittsburgh flights
Nashville to Pittsburgh flights
Chattanooga to Philadelphia flights
Knoxville to Harrisburg flights
Nashville to Scranton flights
Blountville to John F Kennedy Intl flights
Blountville to LaGuardia flights
Blountville to Newark flights
Blountville to Dulles Intl flights
Nashville to Harrisburg flights
Chattanooga to Pittsburgh flights
Chattanooga to Elmira flights
Chattanooga to Harrisburg flights
Blountville to Reagan-National flights
Knoxville to Pittsburgh flights
Nashville to Allentown flights
Knoxville to Allentown flights
Chattanooga to Allentown flights
Memphis to Scranton flights
Memphis to Harrisburg flights
Memphis to Allentown flights
Knoxville to Scranton flights
Chattanooga to Scranton flights
Knoxville to State College flights
Knoxville to Elmira flights
Nashville to State College flights
Memphis to State College flights

Top airline flying from Knoxville to Philadelphia

Discover the top airline that operate flights from Knoxville to Philadelphia. 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$355Average$456FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.