Knoxville (TYS) to Dulles (IAD) flights
2 airlines fly nonstop from Knoxville (TYS) to Dulles (IAD): 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 TYS to IAD
- Allegiant AirNot in an alliance
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book TYS to IAD 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
TYS to IAD 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)American Airlines and Allegiant Air, then United Airlines
- Via Nashville (BNA)Southwest Airlines, then United Airlines
- Via Detroit (DTW)Delta Air Lines the whole way
- Via New York (EWR)United Airlines the whole way
- Via New York (LGA)Delta Air Lines and American Airlines, then United 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)Allegiant Air, then United Airlines
- Via Orlando (MCO)Allegiant Air and Southwest Airlines, then Frontier Airlines and United Airlines
TYS to IAD: common questions
Which airlines fly nonstop from TYS to IAD?
Allegiant Air and United Airlines (Star Alliance) fly nonstop from Knoxville (TYS) to Dulles (IAD).
How far is Knoxville from Dulles by plane?
Knoxville (TYS) and Dulles (IAD) 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 TYS to IAD 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 TYS to IAD cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for TYS to IAD with taxes and fees.
Where can I connect between Knoxville and Dulles?
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.