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Flights from Knoxville to Philadelphia from $266 - Compare and Save

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PHL
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Philadelphia are usually found in July or August, booked 64 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

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 June 26, 2025.

Round-trip from

$266
(Priceline)

One-way from

$121
(Trip.com)

Popular in

April

Cheapest in

July

Average price

$409

Good round-trip deal

$360 or less

Good one-way deal

$212 or less
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. 12% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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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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 June 26, 2025.

This Priceline deal was found by Cheapflights users on 6/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/218:36 pmTYS - PHL
1 stop8h 18mFrontier
Mon 8/256:25 amPHL - TYS
1 stop12h 00mFrontier
Deal found 6/24$266
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/15:02 pmTYS - PHL
1 stop16h 44mMultiple Airlines
Sun 8/35:21 pmPHL - TYS
1 stop14h 41mMultiple Airlines
Deal found 6/25$271
This American Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 9/37:16 amTYS - PHL
Nonstop2h 02mAmerican Airlines
Sat 9/67:00 pmPHL - TYS
Nonstop2h 14mAmerican Airlines
Deal found 6/25$355
This Delta deal was found by Cheapflights users on 6/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:45 amTYS - PHL
1 stop4h 45mDelta
Sat 9/65:25 amPHL - TYS
1 stop5h 02mDelta
Deal found 6/25$375
This United Airlines deal was found by Cheapflights users on 6/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:46 pmTYS - PHL
1 stop6h 44mUnited Airlines
Tue 8/193:00 pmPHL - TYS
2 stops7h 37mUnited Airlines
Deal found 6/23$426

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 June 26, 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

Thu 8/21

8:36 pm-4:54 am

1 stop8h 18m

Philadelphia

Mon 8/25

6:25 am-6:25 pm

1 stop12h 00m

$266

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Fri 8/1

5:02 pm-9:46 am

1 stop16h 44m

Philadelphia

Sun 8/3

5:21 pm-8:02 am

1 stop14h 41m

$271

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Wed 9/3

7:16 am-9:18 am

Nonstop2h 02m

Philadelphia

Sat 9/6

7:00 pm-9:14 pm

Nonstop2h 14m

$355

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Wed 9/3

5:45 am-10:30 am

1 stop4h 45m

Philadelphia

Sat 9/6

5:25 am-10:27 am

1 stop5h 02m

$375

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Thu 8/14

5:46 pm-12:30 am

1 stop6h 44m

Philadelphia

Tue 8/19

3:00 pm-10:37 pm

2 stops7h 37m

$426

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Fri 7/25

1:12 pm-6:52 pm

1 stop5h 40m

$121

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Sun 6/29

5:25 pm-5:10 am

1 stop11h 45m

$144

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Wed 9/3

6:14 am-2:32 pm

1 stop8h 18m

$343

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Mon 8/18

4:35 pm-5:37 am

1 stop13h 02m

$364

KnoxvillePhiladelphia

TYS - PHL

TYSPHL

Knoxville McGhee Tyson

Sat 6/28

4:02 pm-9:56 pm

1 stop5h 54m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

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 June 20, 2025.

To ensure you get the cheapest price possible for a flight from Knoxville to Philadelphia, you should look to book at least 64 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 $236). Flying from Knoxville to Philadelphia in March is currently the most expensive (average of $295). 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 June 26, 2025.

It’s optimal to fly from Knoxville to Philadelphia in the afternoon. By choosing this option you can save up to 60% on the cost of your flight, compared to a flight at noon.

Weekly flight availability from Knoxville to Philadelphia

Explore weekly flight availability from Knoxville to Philadelphia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 26, 2025.

The most flights from TYS to PHL are scheduled on a Wednesday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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 June 26, 2025.
Read through reviews of airlines operating flights from Knoxville to Philadelphia, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,966 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,966 reviews
Delta
8.0
Very good
7,966 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,840 reviews
Delta
8.0
Very good
7,966 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,966 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.9
Fair
3,296 reviews
Delta
8.0
Very good
7,966 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 5 flights from McGhee Tyson (TYS) to Philadelphia (PHL) per day to choose from. Flights to Philadelphia from McGhee Tyson are available from 4 different airlines, which means you should have some options if you want to compare airfare deals. 1h 47m 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 22 times in the past calendar month.

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

    Flying on Frontier is currently your cheapest option to Philadelphia, with prices starting at $266. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $355 and $375, respectively. Users have found that Frontier is 34% cheaper than the other options available to this destination.

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

    $144 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $343 and $364, respectively.

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

    Consider Alaska Airlines (92%), Qatar Airways (85%) or PSA Airlines (84%) 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 $393, our data indicates the cheapest price to be $140. The most popular route (Knoxville McGhee Tyson - Philadelphia), is priced around $266.

  • 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 $236). Flying from Knoxville to Philadelphia in March is currently the most expensive (average of $295). 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 Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Cherry Hill
Pottstown
Ocean City
Chester
Exton
Essington
Reading
Newark
Millville
Ephrata
Camden
Dover
Elkton
Willow Grove
Glen Mills
Springfield
Phoenixville

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Top 4 airlines flying from Knoxville to Philadelphia

Discover the top 4 airlines 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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$70FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$195Average$364FlexibilityNo cancel feeOn-time69%
DeltaCheapest$198Average$456FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$201Average$424FlexibilityNo cancel feeOn-time71%

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