Cheap flights from Knoxville to District of Columbia from $30

In general, July 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 $36. If you don’t want to visit District of Columbia in July, then you should wait until November to fly from Knoxville, when ticket prices are also cheap, with an average price of $38.

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 $361. 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 $692.

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 $291 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly in the evening, with an average ticket price of $807. Departure times in the evening 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

There are 4 cabin classes available to choose from on Knoxville 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.

No. A direct flight is the cheapest option for a flight between Knoxville to District of Columbia.

Southwest and United Airlines 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 6 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

As of April 2026, there are 16 flights per day flying from Knoxville to District of Columbia. The most common time of day flights depart is 7:00PM, with 41% of flights taking off in the afternoon.

As of April 2026, 116 flights take off from Knoxville and land in District of Columbia each week. The most common flight departure day for this route is Sat, with 17% of weekly flights taking off on this day.