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
Filed traffic dataIn June 2026, Mesa Airlines operated the most departures, one of 2 carriers flying nonstop IAH–TYS; the Embraer E175 was the most common aircraft at 97% of departures; flights ran 84% full.
Departures
180
June 2026
Seats
12,770
both directions
Passengers
10,710
both directions
Load factor
83.9%
RPM ÷ ASM
Who flies IAH–TYS?
Mesa Airlines operated the most nonstop IAH–TYS departures in June 2026 (175), one of 2 carriers on the route.
- YV
175 departures · 12,496 seats
Share of departures97.2%84.2%
Load
- C5
5 departures · 274 seats
Share of departures2.8%66.8%
Load
What plane flies IAH–TYS?
In June 2026, the Embraer E175 flew 97% of IAH–TYS departures — more than any other aircraft type.
- Embraer E175
175 departures · 84.2% load
97.2% - Embraer ERJ-145
4 departures · 91.5% load
2.2% - Embraer E170
1 departures · 0.0% load
0.6%
How has IAH–TYS traffic changed?
Nonstop IAH–TYS departures fell from 244 in July 2025 to 180 in June 2026.
Monthly nonstop IAH–TYS traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
May 2026
185 departures · 9,813 passengers
84.8%
Load
June 2026
180 departures · 10,710 passengers
83.9%
Load
By direction
Each direction is filed separately — they rarely match.
IAH → TYS
82.6% full
90 departures · 5,278 passengers
TYS → IAH
85.2% full
90 departures · 5,432 passengers
Nonstop IAH–TYS traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
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 June 2026, the Embraer E175 flew the largest share of departures (97.2%), followed by the Embraer ERJ-145 (2.2%).
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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