Cheap flights from Knoxville to District of Columbia from $35

In general, January is the cheapest month to fly from Knoxville to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $189. If you don’t want to visit District of Columbia in January, then you should wait until November to fly from Knoxville, when ticket prices are also cheap, with an average price of $195.

The cheapest day to depart on your flight to District of Columbia is on a Friday when prices can be found for as low as $382. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday 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 $695.

Flying to District of Columbia from Knoxville in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $296 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly at noon, with an average ticket price of $823. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to District of Columbia from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $284 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Knoxville for as low as $149 on momondo.

There are 4 cabin classes available to choose from on Knoxville McGhee Tyson to District of Columbia 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 Frontier are the most popular carriers operating from Knoxville McGhee Tyson to District of Columbia

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to District of Columbia from Knoxville according to our data. American Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

As of March 2026, there are 7 flights per day flying from Knoxville to District of Columbia. The most common time of day flights depart is 9:00AM, with 43% of flights taking off at noon.

As of March 2026, 54 flights take off from Knoxville and land in District of Columbia each week. The most common flight departure day for this route is Thu, with 33% of weekly flights taking off on this day.