Cheap flights from Knoxville to Washington, D.C. from $30

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Knoxville, with most prices found around $189. If you’re not able to fly to Washington, D.C. in January, then February is your next best option. Flight prices from Knoxville to Washington, D.C. during February average around $189.

On average, the least expensive day to fly to Washington, D.C. from Knoxville is on a Friday. momondo users have found tickets for Friday departures for as low as $373. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Knoxville to Washington, D.C. for around $693.

In the afternoon is the cheapest time of day to fly from Knoxville to Washington, D.C. when you can find flight prices for as low as $295. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $789. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Washington, D.C. from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $278 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Knoxville for as low as $108 on momondo.

There are 4 cabin classes available to choose from on Knoxville McGhee Tyson to Washington, D.C. 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 Washington, D.C..

As of March 2026, prices for Knoxville to Washington, D.C. flights are approximately 47% cheaper when compared to flights at the same time last year.

Delta, Southwest, and United Airlines are the most popular carriers operating from Knoxville McGhee Tyson to Washington, D.C.

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Knoxville according to our data. American Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

As of March 2026, 8 flights take off from Knoxville and land in Washington, D.C. each day. The most common flight departure time for this route is 7:00PM, with 43% of daily flights taking off at noon.

The number of flights available between Knoxville and Washington, D.C. is 58 per week as of March 2026. The most frequent departure day is Sat, with 33% of weekly flights leaving on this day.