$57 Find Cheap Flights from Washington Dulles Airport to Knoxville - Compare and Save

Among airlines operating Washington, D.C. Dulles Intl Airport to Knoxville flights:

• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Washington, D.C. Dulles Intl Airport and Knoxville. The airlines offering nonstop flights on this route include:

• United Airlines
• Allegiant Air

Flights from Washington, D.C. Dulles Intl Airport to Knoxville usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Knoxville McGhee Tyson (TYS).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in First Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Knoxville:

• Economy Class
• First Class

On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $219 round-trip, compared to $351 via a layover through Atlanta Hartsfield-Jackson (ATL).

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $39–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Embraer ERJ-135 / ERJ-140 / ERJ-145 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Embraer 175 (Enhanced Winglets) variants.

Connecting flights from Washington, D.C. Dulles Intl Airport to Knoxville most commonly pass through:

• Atlanta Hartsfield-Jackson (ATL) - 88% of one-stop connections
• Charlotte Douglas (CLT) - 13% of one-stop connections
Together, these airports account for 101% of one-stop bookings on this route.

Yes. Being flexible with your travel dates can save you up to 52% on the Washington, D.C. Dulles Intl Airport to Knoxville route. Thursday is the cheapest departure day at $165 round-trip on average, while Wednesday is the most expensive at $337, a difference of $172. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on Washington, D.C. Dulles Intl Airport to Knoxville flights, with 25% of flights leaving in that window. Afternoon departures account for 25%, evening flights for 25%, and night flights for 25%.

These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Knoxville:

• Earliest: departs at 8:16 am and lands at 10:03 am
• Latest: departs at 10:15 pm and lands at 12:02 am.

The flight takes about 1h 47m.

Last-minute fares on this route - booked within 2 weeks of departure - run 42% above the route average of $223. Book 20 weeks before departure for the lowest fares.

A nonstop flight from Washington, D.C. Dulles Intl Airport to Knoxville takes 1h 47m, covering 419 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

One-way fares from Washington, D.C. Dulles Intl Airport to Knoxville are currently lower than usual. Average one-way flight prices are about $126, which is 31% below the typical average for this route.

Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 4h 04m, compared with 4h 06m via Charlotte Douglas (CLT).

Knoxville McGhee Tyson Airport (TYS) hosts 5 major car rental companies, with daily rates starting from around $33 for economy cars. Top options include:
• Budget
• Alamo
• Thrifty
• Enterprise Rent-A-Car
• Payless

Round-trip flights from Washington, D.C. Dulles Intl Airport to Knoxville range from $111 to $351, with an average of $223 over the past 12 months. Anything below $111 counts as a good deal.