Cheap flights from Knoxville to the United States from $39

In general, April is the cheapest month to fly from Knoxville to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $224. If you aren’t able to travel during the month of April, then book flights to United States from Knoxville during July instead. Flights to United States in July, while not as cheap as those in April, still average around $254.

According to our data, Saturday is the cheapest day to fly to United States from Knoxville. The lowest ticket price found for a Saturday departure recently was $245. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $409. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

The cheapest time of day to fly to United States is in the morning when flights can be purchased for as low as $294. Try not to purchase tickets in the afternoon because they tend to be around $375. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Knoxville McGhee Tyson to Boston Logan Intl for the best Knoxville McGhee Tyson - United States flight prices

There are 4 cabin classes available to choose from on Knoxville McGhee Tyson to United States 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 United States.

Frontier, Delta, and Southwest are the most popular carriers operating from Knoxville McGhee Tyson to United States

American Airlines, Allegiant Air and Delta are the top three most popular airlines that fly to United States from Knoxville according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 9 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Historically, on average around 23% of flights between Knoxville and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 136 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Allegiant Air have had the least number of delays on this route over the last 12 months; with about 23% of their flights experiencing any sort of delay.

As of March 2026, there are 13 flights per day flying from Knoxville to United States. The most common time of day flights depart is 12:00PM, with 49% of flights taking off in the afternoon.

The number of flights available between Knoxville and United States is 92 per week as of March 2026. The most frequent departure day is Sat, with 59% of weekly flights leaving on this day.