Cheap Flights from Philadelphia International to Knoxville

Compare Philadelphia International to Knoxville flight deals

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Flight deals from Philadelphia International to Knoxville

Looking for a cheap last-minute deal or the best return flight from Philadelphia International to Knoxville? Find the lowest prices on one-way and return tickets right here.

Knoxville.230 € per passenger.Departing Thu, 18 Sep, returning Sun, 21 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 18 Sep, arriving in Knoxville.Inbound indirect flight with Frontier Airlines, departs from Knoxville on Sun, 21 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 230 €, select.

Knoxville.261 € per passenger.Departing Tue, 29 Jul, returning Fri, 1 Aug.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 29 Jul, arriving in Knoxville.Inbound indirect flight with Allegiant Air, departs from Knoxville on Fri, 1 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 261 €, select.

Knoxville.315 € per passenger.Departing Sun, 20 Jul, returning Sun, 27 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sun, 20 Jul, arriving in Knoxville.Inbound indirect flight with Frontier Airlines, departs from Knoxville on Sun, 27 Jul, arriving in Philadelphia International.Price includes taxes and charges.From 315 €, select.

Knoxville.327 € per passenger.Departing Sat, 9 Aug, returning Sat, 16 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Sat, 9 Aug, arriving in Knoxville.Inbound indirect flight with Delta, departs from Knoxville on Sat, 16 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 327 €, select.

Knoxville.392 € per passenger.Departing Fri, 29 Aug, returning Tue, 2 Sep.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Fri, 29 Aug, arriving in Knoxville.Inbound indirect flight with United, departs from Knoxville on Tue, 2 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 392 €, select.

Knoxville.402 € per passenger.Departing Sat, 21 Jun, returning Tue, 24 Jun.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Sat, 21 Jun, arriving in Knoxville.Inbound indirect flight with United, departs from Knoxville on Tue, 24 Jun, arriving in Philadelphia International.Price includes taxes and charges.From 402 €, select.

Knoxville.409 € per passenger.Departing Fri, 14 Nov, returning Sun, 16 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Fri, 14 Nov, arriving in Knoxville.Inbound indirect flight with Delta, departs from Knoxville on Sun, 16 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 409 €, select.

Knoxville.409 € per passenger.Departing Mon, 11 Aug, returning Fri, 12 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Mon, 11 Aug, arriving in Knoxville.Inbound indirect flight with Delta, departs from Knoxville on Fri, 12 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 409 €, select.

Find the cheapest month to fly from Philadelphia International to Knoxville

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia International to Knoxville flights are currently cheapest in September.

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Direct flights from Philadelphia International to Knoxville

Philadelphia International to Knoxville: Alternative routes

Compare routes from Philadelphia International to Knoxville below. You may find an airport to fly into that's cheaper, faster, or easier than Knoxville.

Philadelphia to Knoxville: Flight information

The things to know before you go.

Cheapest flight found	230 €
Cheapest month to fly	September
Average flight time	2 hrs, 6 mins
Most popular airline	American Airlines
Average flights per week	96

Finding cheap flights from Philadelphia International to Knoxville: Frequently asked questions

How much are return flights from Philadelphia International to Knoxville?

The best price we found for a return flight from Philadelphia International to Knoxville is 230 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Philadelphia International to Knoxville?

2 hours and 6 minutes is the average flight time from Philadelphia International to Knoxville.

Which airlines fly direct from Philadelphia International to Knoxville?

American Airlines, Piedmont Airlines and Qatar Airways fly direct from Philadelphia International to Knoxville.

How many flights are there a week from Philadelphia International to Knoxville?

As of June 2025, there are 96 flights per week flying from Philadelphia International to Knoxville.

When is the cheapest time to fly from Philadelphia International to Knoxville?

The cheapest month to fly from Philadelphia International to Knoxville is usually June 2025.

Which upcoming date is cheapest to fly from Philadelphia International Airport to Knoxville Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Philadelphia International Airport to Knoxville Airport on Thursday, 18 September 2025.

Can I get a direct flight from Philadelphia International Airport to Knoxville Airport?

Yes – the average flight time is 2 hours and 6 minutes.

How can I find the best flight deal to Knoxville?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Knoxville but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Knoxville?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Knoxville is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Philadelphia International Airport to Knoxville with?

Currently, Frontier Airlines offers the cheapest flight tickets to Knoxville.

Travelling from Philadelphia International Airport (PHL) to McGhee Tyson Airport (TYS): what you need to know

Take a direct flight from Philadelphia International Airport to McGhee Tyson Airport and you'll be in the air for an average of 2 hours.
You can choose from 57 weekly Philadelphia International Airport to McGhee Tyson Airport flights. The 08:20 departure with American Airlines is the earliest flight you can take. Frontier Airlines operates the latest service of the day at 19:34.
Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Make sure you're at the airport on time to board your PHL to TYS flight.
During popular months like August, it's best to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead of international flights when you fly during peak periods in general.
American Airlines has direct flights from Philadelphia International Airport to McGhee Tyson Airport. Book with this popular carrier, then get ready to tick off the sights in Knoxville — and maybe even more of United States if time allows.
Most travellers choose to fly with American Airlines on this route.
With a dependable 80.89% of services arriving as planned, American Airlines is the most punctual carrier operating PHL to TYS flights.
Think about adding a stopover when booking your ticket from Philadelphia International Airport to McGhee Tyson Airport. Simply deselect 'Direct flights only' to break up your trip, or perhaps see a new city along the way. Here are some options between PHL and TYS:
- Hartsfield-Jackson Atlanta International Airport
- Washington Dulles International Airport
- Charlotte Douglas International Airport

How to find the cheapest flights from Philadelphia International Airport (PHL) to McGhee Tyson Airport (TYS)

The cheapest price we've seen for a one-way Philadelphia International Airport to McGhee Tyson Airport flight is 68 €. A return ticket is currently 230 €. Depending on the availability and when you book, these fares may change.
Book seven months before flying. After crunching the numbers on our calendar, this is how far you'll want to book ahead to find cheap tickets from PHL to TYS.
Schedule your trip for June. That's the cheapest month for flights from Philadelphia International Airport to McGhee Tyson Airport. If you're flexible on when you fly, try out the 'Whole month' tool to find the cheapest price across each month.
There's no need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll update you as soon as the price changes on cheap flights from PHL to TYS.
Select your ideal departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Philadelphia International Airport to McGhee Tyson Airport.

Handy information about Philadelphia International Airport (PHL)

PHL is located at Industrial Highway and Island Road.
When it comes to Philadelphia International Airport's on-time performance, data shows 78.93% of flights meet their scheduled arrival time.
Central Philadelphia to Philadelphia International Airport is around 19 kilometres. Depending on traffic, it'll take you about 15 minutes to get there if you're driving, catching a cab or ride-sharing.
You can expect a journey time of around 45 minutes on public transport.
Looking for a handy hotel close to PHL? If you've booked an early flight from Philadelphia International Airport to McGhee Tyson Airport, these stays will have you sleeping moments from check-in:

Arriving at McGhee Tyson Airport (TYS)

The last thing you want is a long trip to your hotel if you're getting in late on a Philadelphia International Airport to McGhee Tyson Airport flight. Stay at one of these accommodation options near TYS instead:
Hit the road running by picking up a McGhee Tyson Airport rental car. Grab your wheels from Budget, Alamo or Avis and explore beyond Knoxville's usual tourist stops.
To get the lowest price, reserve your ride from McGhee Tyson Airport around three weeks ahead.

Getting from McGhee Tyson Airport (TYS) to central Knoxville

You'll find TYS at 2055 Alcoa Highway.
McGhee Tyson Airport to the centre of Knoxville has a drive time of about 20 minutes. It's approximately 23 kilometres away.

When to fly to McGhee Tyson Airport (TYS)

July is the busiest month for flights from Philadelphia International Airport to McGhee Tyson Airport. To skip the crowds, visit Knoxville in February.
Before locking in your flight from Philadelphia International Airport to McGhee Tyson Airport, think about the kind of weather you enjoy. July is the warmest month in Knoxville, with temperatures ranging from 17ºC (63ºF) to 32ºC (90ºF).
January sees average temperatures of between -6ºC (21ºF) and 11ºC (52ºF). Look for cheap tickets from PHL to TYS sometime then if you want to travel when it's cooler.

Explore more of United States

You've done Knoxville, now it's time to explore other corners of United States. Travel around 451 kilometres north to Columbus to check off its top sights. From Franklin Park Conservatory and Botanical Gardens to Ohio Statehouse and German Village, you'll have a packed itinerary ahead.
Around 467 kilometres north-west of Knoxville, Indianapolis is another favourite stop in United States. Experience this destination's highlights firsthand at The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.