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$40+ Cheap flights from Knoxville to Philadelphia (TYS - PHL)

TYS — PHL
Oct 27 — Nov 31
Tue 10/27
Tue 11/3
1 adult, Economy
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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

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Philadelphia are usually found in August or September, booked 23 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 10/2312:57 pm -
Nonstop1h 50m
Mon 10/264:52 pm -
Nonstop2h 00m
Deal found 9/25$81
Fri 12/41:58 pm -
Nonstop1h 52m
Mon 12/74:40 pm -
Nonstop2h 02m
Deal found 9/27$84
Fri 10/163:54 pm -
Nonstop1h 50m
Mon 10/197:21 pm -
Nonstop2h 00m
Deal found 9/25$101
Fri 10/96:55 pm -
Nonstop1h 50m
Mon 10/127:31 pm -
Nonstop2h 00m
Deal found 9/22$125
Fri 10/239:41 pm -
2 stops25h 30m
Mon 10/264:52 pm -
Nonstop2h 00m
Deal found 9/25$145
Mon 12/141:58 pm -
Nonstop1h 52m
Mon 12/213:03 pm -
Nonstop2h 02m
Deal found 9/25$152
Thu 10/229:11 pm -
1 stop27h 27m
Mon 10/264:52 pm -
Nonstop2h 00m
Deal found 9/24$159

Find flight deals from Knoxville to Philadelphia

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$81
(CheapOair)

One-way from

$40
(FlightHub)

Popular in

April

Cheapest in

August

Average price

$173

Good round-trip deal

$289 or less

Good one-way deal

$214 or less
Provider with most accurate pricing for Knoxville McGhee Tyson-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Philadelphia flights.
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From Knoxville McGhee Tyson to Philadelphia
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One-way flight from Knoxville McGhee Tyson to Philadelphia
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Highest demand for flights based on searches. 16% potential increase in price ($83 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Knoxville McGhee Tyson to Philadelphia.
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Price to beat on a one-way flight from Knoxville McGhee Tyson to Philadelphia.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Knoxville to Philadelphia that are best for you.

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Route

Depart

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Price

Cheapest round-trip
Quickest round-trip

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Tue 3/23

6:40 pm-11:25 pm

1 stop4h 45m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$174

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Fri 12/4

7:55 am-9:20 pm

2 stops13h 25m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$186

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Thu 11/26

6:45 am-1:00 pm

1 stop6h 15m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$204

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Fri 12/25

1:00 pm-11:10 pm

1 stop10h 10m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$209

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Mon 3/22

8:00 am-6:40 pm

2 stops10h 40m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$219

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Thu 12/10

11:00 am-6:10 am

3 stops19h 10m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$229

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Tue 12/8

7:55 am-5:25 pm

2 stops9h 30m

Philadelphia

Mon 1/18

5:25 am-12:20 pm

1 stop6h 55m

$307

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Sat 12/12

2:50 pm-7:00 pm

1 stop4h 10m

Philadelphia

Wed 12/16

7:30 am-8:45 pm

2 stops13h 15m

$322

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Fri 10/23

8:20 am-7:35 pm

2 stops11h 15m

Philadelphia

Mon 10/26

2:35 pm-10:45 pm

2 stops8h 10m

$383

KnoxvillePhiladelphia

TYS Knoxville McGhee Tyson - PHL Philadelphia

TYSPHL

Knoxville McGhee Tyson

Thu 10/8

6:00 am-2:20 pm

2 stops8h 20m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$390

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 19 resultsSorted by cheapest first
1
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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 September.
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 21 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, August is the cheapest month in which you can book a flight from Knoxville to Philadelphia (average of $154). 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 49% 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 $113 and $538 in October.
The cheapest round-trip price found within the last 5 days was $81 on Allegiant Air (Oct 23-Oct 26).

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
678 reviews

Boarding

7.7

Entertainment

5.5

Comfort

6.9

Overall

7.3

Food

5.9

Crew

8.1

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
678 reviews
Allegiant Air
7.3
Good
678 reviews

Boarding

7.7

Entertainment

5.5

Comfort

6.9

Overall

7.3

Food

5.9

Crew

8.1

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
7.0
Good
12,098 reviews
Allegiant Air
7.3
Good
678 reviews

Boarding

7.7

Entertainment

5.5

Comfort

6.9

Overall

7.3

Food

5.9

Crew

8.1

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 6 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 19 times in the past calendar month.

  • How long is the flight from Knoxville to Philadelphia?

    For as low as $307, Southwest can have you in Philadelphia from Knoxville in 9h 30m. 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 $72. Another option worth looking into is American Airlines, starting at $382 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 $272, respectively.

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

    Consider Allegiant Air (94%), PSA Airlines (89%) or Alaska Airlines (83%) 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 $451, 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, August is the cheapest month in which you can book a flight from Knoxville to Philadelphia (average of $154). 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
Ocean City
Cherry Hill
Wildwood Crest
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Milford
Ephrata
Dover
Elkton
Essington
New Castle
Willow Grove
Vineland
Millville

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Knoxville to Philadelphia

AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$72Average$113FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$382Average$517FlexibilityNo cancel feeOn-time71%

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