Dulles (IAD) to Knoxville (TYS) flights
2 airlines fly nonstop from Dulles (IAD) to Knoxville (TYS): Allegiant Air and United Airlines. The two airports are 419 miles (675 km) apart. United Airlines is in Star Alliance. There are also 12 ways to fly it with one stop, through Charlotte, Atlanta and Philadelphia and more.
Airlines flying nonstop from IAD to TYS
- Allegiant AirNot in an alliance
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAD to TYS with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
IAD to TYS with one stop
12 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Charlotte (CLT)American Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via Philadelphia (PHL)United Airlines, then American Airlines and Allegiant Air
- Via Nashville (BNA)United Airlines, then Southwest Airlines
- Via Detroit (DTW)Delta Air Lines the whole way
- Via New York (EWR)United Airlines the whole way
- Via New York (LGA)United Airlines, then Delta Air Lines and American Airlines
- Via Jacksonville (JAX)Allegiant Air the whole way
- Via Chicago (ORD)United Airlines the whole way
- Via Fort Walton Beach (VPS)Allegiant Air the whole way
- Via Boston (BOS)United Airlines, then Allegiant Air
- Via Orlando (MCO)Frontier Airlines and United Airlines, then Allegiant Air and Southwest Airlines
IAD to TYS: common questions
Which airlines fly nonstop from IAD to TYS?
Allegiant Air and United Airlines (Star Alliance) fly nonstop from Dulles (IAD) to Knoxville (TYS).
How far is Dulles from Knoxville by plane?
Dulles (IAD) and Knoxville (TYS) are 419 miles (675 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAD to TYS award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAD to TYS cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAD to TYS with taxes and fees.
Where can I connect between Dulles and Knoxville?
The most direct connections are through Charlotte (CLT), Atlanta (ATL), Philadelphia (PHL), Nashville (BNA) and Detroit (DTW). On 7 of them the same airline flies both flights, for example American Airlines through Charlotte.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.