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Austin (AUS) to Houston (IAH)

140mi
225 km121 nm

Flight time

≈ 1h 05m

Bearing

95° E

Austin (AUS) to Houston (IAH) is 140 miles (225 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.

Route map: AUS → IAHAUSIAH

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What actually flies AUS–IAH

US DOT T-100 · filed data

In April 2026, United Airlines operated the most departures, one of 5 carriers flying nonstop AUS–IAH; the Airbus A319 was the most common aircraft at 28% of departures; flights ran 69% full.

Departures

480

April 2026

Seats

72,824

both directions

Passengers

49,964

both directions

Load factor

68.6%

passengers ÷ seats

Who flies AUS–IAH?

United Airlines operated the most nonstop AUS–IAH departures in April 2026 (462), one of 5 carriers on the route.

  • UA

    United Airlines

    462 departures · 71,498 seats

    68.8%

    Load

  • YV

    Mesa Airlines

    12 departures · 864 seats

    76.4%

    Load

  • C5

    CommuteAir

    3 departures · 222 seats

    0.0%

    Load

  • OO

    SkyWest Airlines

    2 departures · 100 seats

    0.0%

    Load

  • B6

    JetBlue Airways

    1 departures · 140 seats

    57.1%

    Load

What plane flies AUS–IAH?

In April 2026, the Airbus A319 flew 28% of AUS–IAH departures — more than any other aircraft type.

How has AUS–IAH traffic changed?

Nonstop AUS–IAH departures fell from 491 in May 2025 to 480 in April 2026.

Monthly nonstop AUS–IAH traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.

  • May 2025

    491 departures · 52,199 passengers

    75.8%

    Load

  • June 2025

    504 departures · 50,454 passengers

    78.1%

    Load

  • July 2025

    490 departures · 46,366 passengers

    79.9%

    Load

  • August 2025

    488 departures · 44,797 passengers

    71.0%

    Load

  • September 2025

    476 departures · 50,231 passengers

    70.9%

    Load

  • October 2025

    491 departures · 57,763 passengers

    76.6%

    Load

  • November 2025

    459 departures · 49,423 passengers

    74.1%

    Load

  • December 2025

    491 departures · 53,323 passengers

    76.0%

    Load

  • January 2026

    478 departures · 47,369 passengers

    68.0%

    Load

  • February 2026

    443 departures · 47,926 passengers

    72.1%

    Load

  • March 2026

    496 departures · 54,950 passengers

    73.7%

    Load

  • April 2026

    480 departures · 49,964 passengers

    68.6%

    Load

By direction

The DOT files each direction separately — they rarely match.

IAH → AUS

67.3% full

241 departures · 24,389 passengers

AUS → IAH

70.0% full

239 departures · 25,575 passengers

Nonstop AUS–IAH 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

AUS

Austin

US

Austin Bergstrom International Airport

Coordinates

30.20°N, 97.66°W

Hemisphere

N · W

IAH

Houston

US

George Bush Intercontinental Airport

Coordinates

29.98°N, 95.34°W

Hemisphere

N · W

Frequently asked

How far is Austin (AUS) from Houston (IAH)?

AUS to IAH is 140 miles (225 km / 121 nautical miles) measured great-circle — the shortest path over the surface of the Earth.

How long is the flight from AUS to IAH?

A nonstop covers the 140-mile great-circle distance in roughly 1h 05m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.

What plane flies AUS–IAH?

In April 2026, the Airbus A319 flew the largest share of departures (28.1%), followed by the Boeing 737-800 (17.5%).

What mileage do I earn flying AUS–IAH?

Distance-based programs credit off the 140-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.

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