Cheap flights from District of Columbia to Knoxville from $29

The month of April is, on average, the cheapest month to fly to Knoxville from District of Columbia, with most prices found around $30. If you aren’t able to travel during the month of April, then book flights to Knoxville from District of Columbia during February instead. Flights to Knoxville in February, while not as cheap as those in April, still average around $31.

The cheapest day to depart from District of Columbia to Knoxville is on a Thursday. Travelers who choose to depart for Knoxville on a Thursday will often find tickets for as low as $263. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from District of Columbia to Knoxville for around $331.

In the afternoon is the cheapest time of day to fly from District of Columbia to Knoxville when you can find flight prices for as low as $186. Flying to Knoxville in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the morning when prices are around $327.

Fly from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson for the best District of Columbia - Knoxville McGhee Tyson flight prices

You are more likely to see cheaper flights to Knoxville from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $274 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from District of Columbia for as low as $105 on momondo.

There are 3 cabin classes available to choose from on District of Columbia to Knoxville flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Allegiant Air, Southwest, and United Airlines are the most popular carriers operating from District of Columbia to Knoxville McGhee Tyson

American Airlines, Delta and Allegiant Air are the top three most popular airlines that fly to Knoxville from District of Columbia according to our data. American Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Knoxville. Keep in mind that there are 6 different airlines that fly to Knoxville on a routine basis, so you have a few additional options to choose from.

As of June 2026, there are 19 flights per day flying from District of Columbia to Knoxville. The most common time of day flights depart is 6:00PM, with 62% of flights taking off in the evening.

As of June 2026, 138 flights take off from District of Columbia and land in Knoxville each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.