Houston (IAH) to Knoxville/Maryville (TYS)
Flight time
≈ 2h 20m
Bearing
56° NE
Houston (IAH) to Knoxville/Maryville (TYS) is 771 miles (1,241 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAH–TYS
US DOT T-100 · filed dataIn April 2026, CommuteAir operated the most departures, one of 2 carriers flying nonstop IAH–TYS; the Embraer ERJ-145 was the most common aircraft at 75% of departures; flights ran 87% full.
Departures
236
April 2026
Seats
13,040
both directions
Passengers
11,353
both directions
Load factor
87.1%
passengers ÷ seats
Who flies IAH–TYS?
CommuteAir operated the most nonstop IAH–TYS departures in April 2026 (177), one of 2 carriers on the route.
- C5
CommuteAir
177 departures · 8,850 seats
Share of departures75.0%88.6%
Load
- YV
Mesa Airlines
59 departures · 4,190 seats
Share of departures25.0%83.8%
Load
What plane flies IAH–TYS?
In April 2026, the Embraer ERJ-145 flew 75% of IAH–TYS departures — more than any other aircraft type.
- Embraer ERJ-145
177 departures · 88.6% load
75.0% - Embraer E175
59 departures · 83.8% load
25.0%
How has IAH–TYS traffic changed?
Nonstop IAH–TYS departures fell from 246 in May 2025 to 236 in April 2026.
Monthly nonstop IAH–TYS traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
246 departures · 11,654 passengers
94.8%
Load
June 2025
236 departures · 11,225 passengers
94.4%
Load
July 2025
244 departures · 12,073 passengers
94.9%
Load
August 2025
245 departures · 11,165 passengers
89.3%
Load
September 2025
233 departures · 10,731 passengers
92.1%
Load
October 2025
250 departures · 11,514 passengers
92.1%
Load
November 2025
238 departures · 10,434 passengers
87.4%
Load
December 2025
239 departures · 11,025 passengers
91.9%
Load
January 2026
207 departures · 9,027 passengers
87.2%
Load
February 2026
210 departures · 9,736 passengers
92.7%
Load
March 2026
238 departures · 10,843 passengers
90.3%
Load
April 2026
236 departures · 11,353 passengers
87.1%
Load
By direction
The DOT files each direction separately — they rarely match.
TYS → IAH
85.2% full
119 departures · 5,608 passengers
IAH → TYS
88.9% full
117 departures · 5,745 passengers
Nonstop IAH–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 Houston (IAH) from Knoxville/Maryville (TYS)?
IAH to TYS is 771 miles (1,241 km / 670 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAH to TYS?
A nonstop covers the 771-mile great-circle distance in roughly 2h 20m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAH–TYS?
In April 2026, the Embraer ERJ-145 flew the largest share of departures (75.0%), followed by the Embraer E175 (25.0%).
What mileage do I earn flying IAH–TYS?
Distance-based programs credit off the 771-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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