$142 Cheap Flights from Knoxville (TYS) to Philadelphia (PHL)

View $142 flight on Sun, Aug 24, 2025Opens in a new window

Popular airlines from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)

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Cheap Flights from Knoxville to Philadelphia (TYS-PHL)

Prices were available within the past 7 days and start at $142 for one-way flights and $284 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 23 - Thu, Nov 6
TYS
Knoxville
PHL
Philadelphia
$284 Roundtrip, found 7 hours ago
$284
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Knoxville to Philadelphia, returning Thu, Nov 6, priced at $284 found 7 hours ago
American Airlines
Fri, Aug 29 - Mon, Sep 1
TYS
Knoxville
PHL
Philadelphia
$311 Roundtrip, found 2 days ago
$311
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Aug 29 from Knoxville to Philadelphia, returning Mon, Sep 1, priced at $311 found 2 days ago
Frontier Airlines
Thu, Oct 2 - Mon, Oct 6
TYS
Knoxville
PHL
Philadelphia
$312 Roundtrip, found 11 hours ago
$312
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Thu, Oct 2 from Knoxville to Philadelphia, returning Mon, Oct 6, priced at $312 found 11 hours ago
Frontier Airlines
Sun, Nov 2 - Thu, Nov 6
TYS
Knoxville
PHL
Philadelphia
$316 Roundtrip, found 17 hours ago
$316
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sun, Nov 2 from Knoxville to Philadelphia, returning Thu, Nov 6, priced at $316 found 17 hours ago
American Airlines
Sat, Aug 9 - Tue, Aug 12
TYS
Knoxville
PHL
Philadelphia
$325 Roundtrip, found 3 days ago
$325
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Aug 9 from Knoxville to Philadelphia, returning Tue, Aug 12, priced at $325 found 3 days ago
Frontier Airlines
Thu, Jul 17 - Sun, Jul 27
TYS
Knoxville
PHL
Philadelphia
$331 Roundtrip, found 6 days ago
$331
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Jul 17 from Knoxville to Philadelphia, returning Sun, Jul 27, priced at $331 found 6 days ago
American Airlines
Thu, Aug 21 - Mon, Aug 25
TYS
Knoxville
PHL
Philadelphia
$335 Roundtrip, just found
$335
Roundtrip
just found
Select American Airlines flight, departing Thu, Aug 21 from Knoxville to Philadelphia, returning Mon, Aug 25, priced at $335 just found
Frontier Airlines
Thu, Jul 17 - Thu, Jul 24
TYS
Knoxville
PHL
Philadelphia
$340 Roundtrip, found 12 hours ago
$340
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Thu, Jul 17 from Knoxville to Philadelphia, returning Thu, Jul 24, priced at $340 found 12 hours ago
United
Wed, Aug 20 - Sat, Aug 23
TYS
Knoxville
PHL
Philadelphia
$375 Roundtrip, found 11 hours ago
$375
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Aug 20 from Knoxville to Philadelphia, returning Sat, Aug 23, priced at $375 found 11 hours ago
Delta
Wed, Aug 13 - Sat, Aug 16
TYS
Knoxville
PHL
Philadelphia
$397 Roundtrip, found 4 days ago
$397
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Aug 13 from Knoxville to Philadelphia, returning Sat, Aug 16, priced at $397 found 4 days ago

Find the cheapest month to fly from Knoxville (TYS) to Philadelphia (PHL)

October is typically the cheapest month to fly

From $78 - $541 per traveler.

Graph displaying average flight prices per month

Flights from Knoxville (TYS) to Philadelphia (PHL)
Origin airport
McGhee Tyson
Destination airport
Philadelphia Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$284
Distance
553 mi
Average flight time
1 hour 56 mins

Knoxville to Philadelphia Flights

The cheapest times to fly from Knoxville to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Knoxville to Philadelphia are during the month of October. You can find some of the cheapest flights from Knoxville to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Knoxville to Philadelphia

Sunday is one of the best days to book for cheap flights from Knoxville to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Knoxville to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Knoxville to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from $142 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Knoxville to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Knoxville to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL) cost?
You can pick up cheap return flights starting at $355 from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving TYS on August 5 2025 and touching down at PHL. The price was last updated on July 9 2025 and has not changed since.
What is the cheapest month to fly from TYS to PHL?
Search for direct flights from TYS to PHL in August to land cheaper tickets. You can find a one-way American Airlines flight for $261 leaving on August 19 2025. This price is based on the cheapest direct flight found on Expedia for this route in the next 330 days. The price was last updated on July 9 2025 and remains unchanged.
Which airlines fly direct from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)?
When departing from McGhee Tyson Airport (TYS), you can hop on a direct flight to Philadelphia Intl. Airport (PHL) with American Airlines.
What is the cheapest airline that flies from TYS to PHL?
With tickets starting at $261 for a one-way journey from TYS to PHL, American Airlines is currently the cheapest carrier on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from TYS on August 19 2025. Prices were last updated on July 9 2025 and have not changed since.
How many flights per day from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)?
With an average of 2 direct flights departing from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL) daily, you'll be up in the air in no time.
What are the most popular departure times for flights from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)?
More travelers fly between TYS and PHL at 7 AM than at any other point in the day. Looking to skip the crowds? Travel outside of rush hours and you're likely to save on your ticket as well.
What day of the week has the most flights from TYS to PHL?
Fly on a Friday if you're looking for the best selection of flights from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL).
What is the earliest flight from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)?
The earliest flight out of McGhee Tyson Airport (TYS) is at around 7:56AM UTC-5. Board this plane and you'll touch down at Philadelphia Intl. Airport (PHL) at approximately 9:50AM UTC-5. The overall travel time is 1h 54m.
How long does it take to fly from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)?
It usually takes 1 hour and 52 minutes to travel the 550 mi from TYS to PHL.
What is the best time to fly from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)?
To touch down at Philadelphia Intl. Airport (PHL) on time, choose a flight that leaves from McGhee Tyson Airport (TYS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Philadelphia from McGhee Tyson Airport (TYS)?
If you're flying on a direct flight from McGhee Tyson Airport (TYS) to Philadelphia, Philadelphia Intl. Airport (PHL) is the only airport you can land at.
Is it cheaper to buy a plane ticket from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL) last-minute?
Waiting until just before your departure to book your flight from TYS to PHL generally means paying more. Although you may find some last-minute discounts, there's no guarantee. Be flexible with your itinerary for a better chance of scoring a bargain.
Is it cheaper to book a TYS to PHL flight and hotel package?
Compared with arranging flights and hotels separately, booking a TYS to PHL flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the hassle out of planning your trip. Simply secure your flights and choose from our extensive range of stays, then tailor your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from McGhee Tyson Airport (TYS) to Philadelphia Intl. Airport (PHL)?
If you reserved your TYS to PHL flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.