Dulles (IAD) to Knoxville/Maryville (TYS)
Flight time
≈ 1h 38m
Bearing
241° SW
Dulles (IAD) to Knoxville/Maryville (TYS) is 419 miles (674 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies IAD–TYS
US DOT T-100 · filed dataIn April 2026, CommuteAir operated the most departures, one of 3 carriers flying nonstop IAD–TYS; the Embraer ERJ-145 was the most common aircraft at 90% of departures; flights ran 81% full.
Departures
197
April 2026
Seats
12,236
both directions
Passengers
9,927
both directions
Load factor
81.1%
passengers ÷ seats
Who flies IAD–TYS?
CommuteAir operated the most nonstop IAD–TYS departures in April 2026 (177), one of 3 carriers on the route.
- C5
CommuteAir
177 departures · 8,850 seats
Share of departures89.8%89.6%
Load
- G4
Allegiant Air
18 departures · 3,240 seats
Share of departures9.1%58.2%
Load
- YV
Mesa Airlines
2 departures · 146 seats
Share of departures1.0%76.7%
Load
What plane flies IAD–TYS?
In April 2026, the Embraer ERJ-145 flew 90% of IAD–TYS departures — more than any other aircraft type.
- Embraer ERJ-145
177 departures · 89.6% load
89.8% - Airbus A320
18 departures · 58.2% load
9.1% - Embraer E175
2 departures · 76.7% load
1.0%
How has IAD–TYS traffic changed?
Nonstop IAD–TYS departures fell from 213 in May 2025 to 197 in April 2026.
Monthly nonstop IAD–TYS traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
213 departures · 9,961 passengers
87.2%
Load
June 2025
260 departures · 12,790 passengers
83.3%
Load
July 2025
256 departures · 12,332 passengers
83.1%
Load
August 2025
257 departures · 11,775 passengers
77.5%
Load
September 2025
231 departures · 10,346 passengers
87.4%
Load
October 2025
211 departures · 10,034 passengers
81.1%
Load
November 2025
253 departures · 11,223 passengers
75.5%
Load
December 2025
234 departures · 11,133 passengers
79.1%
Load
January 2026
185 departures · 7,376 passengers
66.6%
Load
February 2026
181 departures · 7,920 passengers
71.2%
Load
March 2026
202 departures · 9,932 passengers
79.8%
Load
April 2026
197 departures · 9,927 passengers
81.1%
Load
By direction
The DOT files each direction separately — they rarely match.
IAD → TYS
80.5% full
99 departures · 4,942 passengers
TYS → IAD
81.8% full
98 departures · 4,985 passengers
Nonstop IAD–TYS traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Frequently asked
How far is Dulles (IAD) from Knoxville/Maryville (TYS)?
IAD to TYS is 419 miles (674 km / 364 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to TYS?
A nonstop covers the 419-mile great-circle distance in roughly 1h 38m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–TYS?
In April 2026, the Embraer ERJ-145 flew the largest share of departures (89.8%), followed by the Airbus A320 (9.1%).
What mileage do I earn flying IAD–TYS?
Distance-based programs credit off the 419-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
Keep exploring
Every route below is its own page.
Other routes from IAD
Popular long-haul routes