HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Philadelphia

$31+ Cheap flights from Knoxville to Philadelphia (TYS - PHL)

TYS — PHL
Sep 25 — Oct 21
Fri 9/25
Fri 10/2
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 June or July, booked 37 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Knoxville to Philadelphia

Cheapest flights from Knoxville to Philadelphia

Fri 10/163:54 pm -
Nonstop1h 50m
Mon 10/197:21 pm -
Nonstop2h 00m
Deal found 8/24$70
Fri 9/111:54 pm -
Nonstop1h 50m
Mon 9/145:34 pm -
Nonstop2h 00m
Deal found 8/21$71
Fri 10/163:54 pm -
Nonstop1h 50m
Mon 10/264:52 pm -
Nonstop2h 00m
Deal found 8/22$76
Fri 9/251:54 pm -
Nonstop1h 50m
Mon 9/285:34 pm -
Nonstop2h 00m
Deal found 8/22$103
Fri 10/25:39 pm -
Nonstop1h 50m
Mon 10/57:21 pm -
Nonstop2h 00m
Deal found 8/23$107

Find flight deals from Knoxville to Philadelphia

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$70
(Kiwi.com)

One-way from

$31
(CheapOair)

Popular in

April

Cheapest in

June

Average price

$393

Good round-trip deal

$429 or less

Good one-way deal

$176 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. 8% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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

 
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

Cheapest round-trip

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Tue 11/10

5:15 pm-10:05 pm

1 stop4h 50m

Philadelphia

Wed 11/11

7:30 am-8:45 pm

2 stops13h 15m

$292

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Wed 9/23

8:05 am-4:00 pm

2 stops7h 55m

Philadelphia

Thu 9/24

5:55 am-5:10 pm

2 stops11h 15m

$418

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Thu 12/10

1:00 pm-10:05 pm

2 stops9h 05m

Philadelphia

Sun 12/13

5:30 am-3:00 pm

2 stops9h 30m

$427

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Fri 11/20

7:05 am-5:40 pm

2 stops10h 35m

Philadelphia

Wed 11/25

12:10 pm-9:40 pm

2 stops9h 30m

$447

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Sat 9/5

6:50 am-3:00 pm

2 stops8h 10m

Philadelphia

Tue 9/8

10:45 am-7:00 pm

2 stops8h 15m

$448

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Sat 12/19

6:55 pm-11:38 pm

1 stop4h 43m

Philadelphia

Wed 12/30

7:00 am-1:38 pm

1 stop6h 38m

$449
Quickest round-trip

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Wed 11/25

5:40 am-9:27 am

1 stop3h 47m

Philadelphia

Sat 11/28

6:30 am-11:28 am

1 stop4h 58m

$449

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Fri 10/16

8:20 am-9:50 pm

2 stops13h 30m

Philadelphia

Mon 10/19

3:20 pm-10:40 pm

2 stops7h 20m

$449

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Thu 12/17

8:10 am-6:45 pm

2 stops10h 35m

Philadelphia

Sun 12/20

5:25 am-12:05 pm

2 stops6h 40m

$453

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Thu 11/19

7:05 am-4:30 pm

2 stops9h 25m

Philadelphia

Tue 11/24

5:50 am-5:00 pm

2 stops11h 10m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/24

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Knoxville to Philadelphia

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Philadelphia in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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

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?

To ensure you get the cheapest price possible for a flight from Knoxville to Philadelphia, you should look to book at least 36 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, June is the cheapest month in which you can book a flight from Knoxville to Philadelphia (average of $337). Flying from Knoxville to Philadelphia in April is currently the most expensive (average of $585). 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?

It’s optimal to fly from Knoxville to Philadelphia in the evening. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip from Knoxville to Philadelphia?

Airfare is below average for this route at the moment.

Knoxville to Philadelphia flights typically cost between $146 and $515 in October.
The cheapest round-trip price found within the last 5 days was $70 on Allegiant Air (Oct 16-Oct 19).

Reviews of airlines servicing Philadelphia

Read through reviews of airlines operating flights from Knoxville to Philadelphia, such as Allegiant Air and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Allegiant Air
7.3
Good
675 reviews

Overall

7.3

Boarding

7.7

Entertainment

5.4

Crew

8.1

Comfort

6.9

Food

5.9

Reviews

1 / 20
2.0
Mediocre

Nic,Aug 2026

SRQ - ALB

Worker at gate refused to let me measure my personal item and insisted it needed to be a carryon and to pay 75$. I understand if it’s too big but she wouldn’t even let me go measure it. She eventually let me measure my own luggage after back n forth. It is a few inches too big and she comes over and attempts to grab my suitcase out my hands and I pull it away from her. She then shuts the door of the gate and says to call the police. I then just offer to pay for the carryon and she says ok. Then refuses to use let me use my tap to pay, luckily I had my physical card on me. As soon as I walked out the door I respectfully asked for her name. She began screaming at me and threatening me. This worker was just so hostile I understand if my stuffs too big I will pay the difference I’m not trying to get over on the rules. I was confused because I was allowed to board my destination flight with this item as a personal item. So I was confused by this whole situation from the go. It also caused a massive scene at the airport and I was extremely embarrassed. It genuinely seemed like this worker was out to get me for some reason. I had literally just arrived to the gate as it was already boarding so I hadn’t done anything prior. Super weird situation and it really spooked me.
Allegiant Air
7.3
Good
675 reviews
Allegiant Air
7.3
Good
675 reviews

Overall

7.3

Boarding

7.7

Entertainment

5.4

Crew

8.1

Comfort

6.9

Food

5.9

Reviews

1 / 20
2.0
Mediocre

Nic,Aug 2026

SRQ - ALB

Worker at gate refused to let me measure my personal item and insisted it needed to be a carryon and to pay 75$. I understand if it’s too big but she wouldn’t even let me go measure it. She eventually let me measure my own luggage after back n forth. It is a few inches too big and she comes over and attempts to grab my suitcase out my hands and I pull it away from her. She then shuts the door of the gate and says to call the police. I then just offer to pay for the carryon and she says ok. Then refuses to use let me use my tap to pay, luckily I had my physical card on me. As soon as I walked out the door I respectfully asked for her name. She began screaming at me and threatening me. This worker was just so hostile I understand if my stuffs too big I will pay the difference I’m not trying to get over on the rules. I was confused because I was allowed to board my destination flight with this item as a personal item. So I was confused by this whole situation from the go. It also caused a massive scene at the airport and I was extremely embarrassed. It genuinely seemed like this worker was out to get me for some reason. I had literally just arrived to the gate as it was already boarding so I hadn’t done anything prior. Super weird situation and it really spooked me.
American Airlines
7.1
Good
11,995 reviews
Allegiant Air
7.3
Good
675 reviews

Overall

7.3

Boarding

7.7

Entertainment

5.4

Crew

8.1

Comfort

6.9

Food

5.9

Reviews

1 / 20
2.0
Mediocre

Nic,Aug 2026

SRQ - ALB

Worker at gate refused to let me measure my personal item and insisted it needed to be a carryon and to pay 75$. I understand if it’s too big but she wouldn’t even let me go measure it. She eventually let me measure my own luggage after back n forth. It is a few inches too big and she comes over and attempts to grab my suitcase out my hands and I pull it away from her. She then shuts the door of the gate and says to call the police. I then just offer to pay for the carryon and she says ok. Then refuses to use let me use my tap to pay, luckily I had my physical card on me. As soon as I walked out the door I respectfully asked for her name. She began screaming at me and threatening me. This worker was just so hostile I understand if my stuffs too big I will pay the difference I’m not trying to get over on the rules. I was confused because I was allowed to board my destination flight with this item as a personal item. So I was confused by this whole situation from the go. It also caused a massive scene at the airport and I was extremely embarrassed. It genuinely seemed like this worker was out to get me for some reason. I had literally just arrived to the gate as it was already boarding so I hadn’t done anything prior. Super weird situation and it really spooked me.

Related info for your journey

  • 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 5 flights from McGhee Tyson (TYS) to Philadelphia (PHL) per day to choose from. Flights to Philadelphia from McGhee Tyson are available from 2 different airlines, which means you should have some options if you want to compare airfare deals. 1h 50m 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 18 times in the past calendar month.

  • How long is the flight from Knoxville to Philadelphia?

    For as low as $292, Southwest can have you in Philadelphia from Knoxville in 4h 50m. The distance from Knoxville to Philadelphia is about 553 mi.

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

    Flying on Allegiant Air is currently your cheapest option to Philadelphia, with prices starting at $78. Another option worth looking into is American Airlines, starting at $365 round trip. Users have found that Allegiant Air is 83% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Knoxville to Philadelphia one-way?

    $39 is the cheapest one-way deal found within the past few days, from Allegiant Air. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $148 and $258, respectively.

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

    Consider Alaska Airlines (88%), PSA Airlines (82%) or British Airways (71%) 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 $1,268, our data indicates the cheapest price to be $60. The most popular route (Knoxville McGhee Tyson - Philadelphia), is priced around $70.

  • 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, June is the cheapest month in which you can book a flight from Knoxville to Philadelphia (average of $337). Flying from Knoxville to Philadelphia in April is currently the most expensive (average of $585). 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
Reading
King of Prussia
Camden
Wildwood Crest
Ocean City
Cherry Hill
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Vineland

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Knoxville to Philadelphia

Nashville to John F Kennedy Intl flights
Nashville to LaGuardia flights
Nashville to Newark flights
Memphis to Newark flights
Memphis to LaGuardia flights
Memphis to John F Kennedy Intl flights
Chattanooga to LaGuardia flights
Nashville to Philadelphia flights
Chattanooga to John F Kennedy Intl flights
Nashville to Reagan-National flights
Nashville to Dulles Intl flights
Knoxville to LaGuardia flights
Knoxville to John F Kennedy Intl flights
Chattanooga to Newark flights
Knoxville to Newark flights
Memphis to Reagan-National flights
Memphis to Dulles Intl flights
Knoxville to Dulles Intl flights
Memphis to Philadelphia flights
Chattanooga to Dulles Intl flights
Chattanooga to Reagan-National flights
Knoxville to Reagan-National flights
Memphis to Pittsburgh flights
Nashville to Pittsburgh flights
Memphis to Harrisburg flights
Nashville to Harrisburg flights
Knoxville to Scranton flights
Chattanooga to Pittsburgh flights
Chattanooga to Philadelphia flights
Chattanooga to Harrisburg flights
Blountville to LaGuardia flights
Nashville to Allentown flights
Knoxville to Elmira flights
Blountville to Newark flights
Knoxville to Pittsburgh flights
Nashville to Elmira flights
Memphis to Allentown flights
Knoxville to Harrisburg flights
Knoxville to State College flights
Nashville to Scranton flights
Nashville to State College flights
Blountville to Reagan-National flights
Blountville to Philadelphia flights
Memphis to State College flights
Knoxville to Allentown flights

Top 2 airlines flying from Knoxville to Philadelphia

AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$78Average$114FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$365Average$511FlexibilityNo 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.