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

Filed traffic data

In May 2026, United Airlines operated the most departures, one of 8 carriers flying nonstop AUS–IAH; the Airbus A320 was the most common aircraft at 30% of departures; flights ran 74% full.

Departures

491

May 2026

Seats

74,074

both directions

Passengers

55,005

both directions

Load factor

74.3%

RPM ÷ ASM

Who flies AUS–IAH?

United Airlines operated the most nonstop AUS–IAH departures in May 2026 (451), one of 8 carriers on the route.

  • UA

    United Airlines

    451 departures · 70,797 seats

    74.1%

    Load

  • YV

    Mesa Airlines

    29 departures · 2,108 seats

    83.4%

    Load

  • OO

    SkyWest Airlines

    3 departures · 222 seats

    96.0%

    Load

  • YX

    Republic Airways

    2 departures · 152 seats

    48.0%

    Load

  • C5

    CommuteAir

    2 departures · 124 seats

    0.0%

    Load

  • DL

    Delta Air Lines

    2 departures · 321 seats

    70.4%

    Load

  • AS

    Alaska Airlines

    1 departures · 178 seats

    60.7%

    Load

  • AA

    American Airlines

    1 departures · 172 seats

    88.9%

    Load

What plane flies AUS–IAH?

In May 2026, the Airbus A320 flew 30% of AUS–IAH departures — more than any other aircraft type.

How has AUS–IAH traffic changed?

Nonstop AUS–IAH departures fell from 504 in June 2025 to 491 in May 2026.

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

  • 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

  • May 2026

    491 departures · 55,005 passengers

    74.3%

    Load

By direction

Each direction is filed separately — they rarely match.

IAH → AUS

72.6% full

246 departures · 26,924 passengers

AUS → IAH

75.9% full

245 departures · 28,081 passengers

Nonstop AUS–IAH traffic has been filed since 2025.

Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).

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 May 2026, the Airbus A320 flew the largest share of departures (29.9%), followed by the Airbus A319 (15.1%).

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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