$42+ Cheap flights from Philadelphia to Knoxville (PHL - TYS)
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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — TYS
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Knoxville 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 Philadelphia to Knoxville McGhee Tyson are usually found in August or July, booked 86 days in advance, depart on a Monday or Thursday and return on a Thursday
Cheap flight deals from Philadelphia to Knoxville
Cheapest
Best
Last-minute
One-way
Cheapest flights from Philadelphia to KnoxvilleExplore the most affordable flight options available from Philadelphia to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Philadelphia to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:52 pm -
Nonstop2h 00m
Fri 10/3012:57 pm -
Nonstop1h 50m
Deal found 9/5![Allegiant Air logo]()
$88
This Trip.com deal was found by Cheapflights users on 9/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:21 pm -
Nonstop2h 00m
Fri 10/2312:57 pm -
Nonstop1h 50m
Deal found 9/5![Allegiant Air logo]()
$89
This CheapOair deal was found by Cheapflights users on 9/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:40 pm -
Nonstop2h 02m
Fri 12/111:58 pm -
Nonstop1h 52m
Deal found 9/9![Allegiant Air logo]()
$90
This FlightHub deal was found by Cheapflights users on 9/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:40 pm -
Nonstop2h 02m
Mon 12/71:58 pm -
Nonstop1h 52m
Deal found 9/8![Allegiant Air logo]()
$91
This CheapOair deal was found by Cheapflights users on 9/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:37 pm -
Nonstop2h 00m
Mon 11/22:12 pm -
Nonstop1h 50m
Deal found 9/8![Allegiant Air logo]()
$93
This Trip.com deal was found by Cheapflights users on 9/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:34 pm -
Nonstop2h 00m
Fri 9/251:54 pm -
Nonstop1h 50m
Deal found 9/5![Allegiant Air logo]()
$94
This CheapOair deal was found by Cheapflights users on 9/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:57 pm -
Nonstop2h 00m
Mon 11/162:21 pm -
Nonstop1h 50m
Deal found 9/7![Allegiant Air logo]()
$109
This Booking.com deal was found by Cheapflights users on 9/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/114:40 pm -
Nonstop2h 02m
Mon 12/141:58 pm -
Nonstop1h 52m
Deal found 9/7![Allegiant Air logo]()
$115
This CheapOair deal was found by Cheapflights users on 9/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:57 pm -
Nonstop2h 00m
Mon 11/162:21 pm -
Nonstop1h 50m
Deal found 9/4![Allegiant Air logo]()
$117
This Trip.com deal was found by Cheapflights users on 9/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:34 pm -
Nonstop2h 00m
Mon 9/142:54 pm -
Nonstop1h 50m
Deal found 9/6![Allegiant Air logo]()
$124
Best flights from Philadelphia to KnoxvilleDiscover carefully curated flight deals from Philadelphia to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Philadelphia to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2412:05 pm -
1 stop5h 50m
Sat 10/316:40 am -
1 stop6h 30m
Deal found 9/9![Southwest logo]()
$331
This Delta deal was found by Cheapflights users on 9/7. 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.
Thu 10/86:10 am -
1 stop4h 10m
Wed 10/147:09 am -
1 stop4h 01m
Deal found 9/7![Delta logo]()
$510
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:00 am -
2 stops10h 40m
Wed 10/78:20 am -
2 stops9h 40m
Deal found 9/9![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 9/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:20 pm -
2 stops7h 45m
Thu 10/2212:50 pm -
2 stops11h 05m
Deal found 9/5![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 9/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:45 am -
2 stops9h 10m
Sat 9/266:50 am -
2 stops11h 35m
Deal found 9/5![Southwest logo]()
$429
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:15 am -
1 stop4h 50m
Thu 9/247:10 am -
2 stops8h 15m
Deal found 9/8![Southwest logo]()
$472
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:45 am -
2 stops8h 15m
Fri 9/251:00 pm -
2 stops9h 05m
Deal found 9/8![Southwest logo]()
$477
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:15 am -
1 stop4h 50m
Wed 9/235:30 pm -
1 stop4h 20m
Deal found 9/9![Southwest logo]()
$481
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:45 am -
2 stops8h 15m
Sat 9/266:50 am -
2 stops8h 10m
Deal found 9/9![Southwest logo]()
$491
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:55 am -
1 stop6h 20m
Sun 10/117:40 pm -
1 stop4h 45m
Deal found 9/7![Southwest logo]()
$537
Last-minute flights from Philadelphia to KnoxvilleDiscover last-minute flight deals from Philadelphia to Knoxville. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Knoxville. Data last updated September 10, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:34 pm -
Nonstop2h 00m
Mon 9/142:54 pm -
Nonstop1h 50m
Deal found 9/6![Allegiant Air logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/145:34 pm -
Nonstop2h 00m
Fri 9/181:54 pm -
Nonstop1h 50m
Deal found 9/9![Allegiant Air logo]()
$147
This Trip.com deal was found by Cheapflights users on 9/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:34 pm -
Nonstop2h 00m
Fri 9/251:54 pm -
Nonstop1h 50m
Deal found 9/5![Allegiant Air logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 9/215:34 pm -
Nonstop2h 00m
Fri 9/258:55 pm -
2 stops26h 23m
Deal found 9/5![Multiple Airlines logo]()
$145
This Trip.com deal was found by Cheapflights users on 9/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:21 pm -
Nonstop2h 00m
Fri 10/2312:57 pm -
Nonstop1h 50m
Deal found 9/5![Allegiant Air logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/197:21 pm -
Nonstop2h 00m
Fri 10/309:41 pm -
2 stops20h 38m
Deal found 9/8![Multiple Airlines logo]()
$153
This Flightnetwork deal was found by Cheapflights users on 9/8. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:37 pm -
Nonstop2h 00m
Fri 10/3012:57 pm -
Nonstop1h 50m
Deal found 9/8![Allegiant Air logo]()
$133
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:52 pm -
Nonstop2h 00m
Fri 10/3012:57 pm -
Nonstop1h 50m
Deal found 9/5![Allegiant Air logo]()
$88
This CheapOair deal was found by Cheapflights users on 9/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:37 pm -
Nonstop2h 00m
Mon 11/22:12 pm -
Nonstop1h 50m
Deal found 9/8![Allegiant Air logo]()
$93
One-way flights from Philadelphia to KnoxvilleSearch for one-way flight options from Philadelphia to Knoxville. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Philadelphia to Knoxville. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Jetabroad deal was found by Cheapflights users on 9/5. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:40 pm -
Nonstop2h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Allegiant Air logo]()
$42
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:40 pm -
Nonstop2h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Allegiant Air logo]()
$44
This CheapOair deal was found by Cheapflights users on 9/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:52 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Allegiant Air logo]()
$54
This CheapOair deal was found by Cheapflights users on 9/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:34 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Allegiant Air logo]()
$55
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 11/95:01 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Allegiant Air logo]()
$56
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/57:21 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Allegiant Air logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/127:31 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Allegiant Air logo]()
$70
This Gotogate deal was found by Cheapflights users on 9/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:34 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Allegiant Air logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 11/63:57 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Allegiant Air logo]()
$78
Find flight deals from Philadelphia to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Knoxville (TYS). 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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $88 (CheapOair) |
One-way from | $42 (Jetabroad) |
Popular in | January |
Cheapest in | August |
Average price | $437 |
Good round-trip deal | $129 or less |
Good one-way deal | $66 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to Knoxville 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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Philadelphia to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Tue 9/29
10:45 am-7:55 pm
2 stops9h 10m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$185
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Mon 10/26
1:55 pm-10:45 pm
2 stops8h 50m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$185
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Fri 11/27
5:30 am-12:10 pm
1 stop6h 40m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$214
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Tue 9/22
5:32 pm-10:04 am
2 stops16h 32m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$224
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Sat 12/5
8:40 am-1:50 pm
1 stop5h 10m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$225
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Tue 12/8
8:01 am-3:13 pm
1 stop7h 12m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$225
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Wed 3/3
6:13 pm-11:46 pm
1 stop5h 33m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$225
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Sat 11/7
8:50 am-1:31 pm
1 stop4h 41m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$225
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Wed 11/4
12:32 pm-7:49 pm
1 stop7h 17m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$225
Quickest round-trip
PhiladelphiaKnoxville
PHL Philadelphia - TYS Knoxville McGhee Tyson
PHLTYS
Philadelphia
Tue 9/22
5:27 pm-9:44 pm
1 stop4h 17m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$234
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Philadelphia to Knoxville
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 Philadelphia to Knoxville in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Philadelphia-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-Knoxville 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 Philadelphia-Knoxville 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 Philadelphia to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Philadelphia with our price prediction graph.
PHL-TYS
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 Philadelphia to Knoxville
How far ahead should I book a flight from Philadelphia to Knoxville?
To ensure you get the cheapest price possible for a flight from Philadelphia to Knoxville, you should look to book at least 85 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 Philadelphia to Knoxville?
Currently, August is the cheapest month in which you can book a flight from Philadelphia to Knoxville (average of $139). Flying from Philadelphia to Knoxville in January is currently the most expensive (average of $549). 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 PHL to TYS?
Find hourly flight availability from Philadelphia to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 2026.
It’s optimal to fly from Philadelphia to Knoxville in the afternoon. By choosing this option you can save up to 69% on the cost of your flight, compared to a flight in the morning.
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated September 10, 2026.
Read through reviews of airlines operating flights from Philadelphia to Knoxville, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Top 5 airlines flying from Philadelphia to Knoxville
Discover the top 5 airlines that operate flights from Philadelphia to Knoxville. 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$83 | Average$132 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$186 | Average$511 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$265 | Average$400 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$339 | Average$498 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$380 | Average$498 | FlexibilityNo cancel fee | On-time71% |