Knoxville to Philadelphia flights

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Lowest observed

€123

Cheapest month

October 2026

Last checked

10 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €155

28 Oct 2026

One way

Cheapest observed day · Last checked: 11 Sep 2026

When to fly

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Find the dates that work for you

The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Airlines seen: Allegiant Air, American Airlines, Frontier Airlines, Southwest Airlines, United Airlines
Typical journey time: 10h 46m

Short answer

We have seen Allegiant Air fares from Knoxville to Philadelphia. The lowest fare our own searches returned is €123, seen on 3 Oct 2026. October 2026 is the cheapest month in our observations, at €123. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.

About this route

Explore the fares we observed from Knoxville to Philadelphia. Prices move often, so pick your dates to see the latest options.

Route distance: 886 km
Typical journey time: 10h 46m
Airlines seen: Allegiant Air, American Airlines, Frontier Airlines, Southwest Airlines, United Airlines
Alternative airports: TTN

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

A clearer picture of your fare

Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Airport to city: straight-line distance

McGhee Tyson Airport (TYS) → Knoxville, city gazetteer reference point (35.9606, -83.9207): ≈ 18 km.
Philadelphia International Airport (PHL) → Philadelphia, city gazetteer reference point (39.9523, -75.1638): ≈ 11 km.
Trenton Mercer Airport (TTN) → Philadelphia, city gazetteer reference point (39.9523, -75.1638): ≈ 47 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much is a flight from Knoxville to Philadelphia?

The lowest fare we have observed is €123, found on 3 Oct 2026. Prices move, so read it as a floor rather than a quote.

When is the cheapest month to fly from Knoxville to Philadelphia?

In our observations October 2026 is the cheapest month so far, at €123.

Are there direct flights from Knoxville to Philadelphia?

Our data holds no non-stop flight from Knoxville to Philadelphia. The fares on this page include at least one stop.

Which airlines fly from Knoxville to Philadelphia?

These are the carriers we have seen on the route: Allegiant Air, American Airlines, Frontier Airlines, Southwest Airlines, United Airlines.

How long does the flight from Knoxville to Philadelphia take?

The average journey time across the 22 fares we observed is 14h 46m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide