Cheap flights from Knoxville to Philadelphia from $38

The cheapest month to fly to Philadelphia from Knoxville is in June. Flight prices, which tend to average around $337, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Philadelphia, with average flight prices from Knoxville averaging around $393.

The cheapest day to depart from Knoxville to Philadelphia is on a Thursday. Travelers who choose to depart for Philadelphia on a Thursday will often find tickets for as low as $541. On the other hand, Sunday is the most expensive day to depart from Knoxville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $868.

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Knoxville to Philadelphia in the evening for as low as $504. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is at noon when prices are around $1,031.

Fly from Knoxville McGhee Tyson to Philadelphia for the best Knoxville McGhee Tyson - Philadelphia flight prices

You are more likely to see cheaper flights to Philadelphia from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $484 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Knoxville for as low as $162 on momondo.

There are 4 cabin classes available to choose from on Knoxville to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Knoxville to Philadelphia.

As of June 2026, prices for Knoxville to Philadelphia flights are approximately 52% more expensive when compared to flights at the same time last year.

Allegiant Air, Southwest, and Delta are the most popular carriers operating from Knoxville McGhee Tyson to Philadelphia

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Philadelphia from Knoxville according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 4 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

As of June 2026, 6 flights take off from Knoxville and land in Philadelphia each day. The most common flight departure time for this route is 1:00PM, with 42% of daily flights taking off in the afternoon.

As of June 2026, there are 43 flights per week flying from Knoxville to Philadelphia. The most common day of the week flights depart is Sun, with 19% of flights taking off on this day.