How long is the flight from AUS to IAH?

Scheduled flights took on average 1 h 9 min from AUS to IAH and 1 h from IAH to AUS, gate to gate (Aug 2025 – Jul 2026, US BTS). Winds make one direction faster.

Which airlines fly nonstop between AUS and IAH?

United Air Lines, Mesa Airlines, SkyWest Airlines, Delta Air Lines flew the route in Aug 2025 – Jul 2026, with 111 flights a week in both directions together.

How much EU261 compensation is a delay on AUS–IAH worth?

Neither EU261 nor UK261 applies: the route neither starts nor ends in the EU, EEA, Switzerland or the UK.

How much CO2 does a flight from AUS to IAH emit?

About 51 kg CO2e per economy passenger one way, including the extra warming effect of flying high (30 kg without it), using the UK government's 2026 conversion factors.

AirportMiles

Austin (AUS) – Houston (IAH)

Flights on Google Skyscanner

Distance, flight time and the airlines that fly it, from open data.

Distance: 225 km; 140 mi · 121 nm
Flight time: 1 h 9 min / 1 h; Average gate to gate: AUS → IAH / back
Time difference: none
CO2 per passenger: 51 kg; One way, economy, incl. RF (30 kg CO2 only)
Passengers / year: 625,096; Aug 2025 – Jul 2026 · +4.8%
Flights / week: 111; Both directions, average
Seats filled: 74%; 844,876 seats a year
Airlines nonstop: 4; UA, YV, OO

Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources

Shortest path over the earth's surface (great circle). Real flights bend around weather, winds and airspace.

The way there

Heading from AUS: 95°
Heading from IAH: 277°
Halfway point: 30.10, -96.50
Great-circle km: 225 km (sphere, for EU261)
In the air AUS → IAH: 34 min
In the air IAH → AUS: 30 min
Clocks: Same time in both

The estimate for a route without real times is 1 h 5 min; how it is worked out is on Sources.

Passengers per month, both directions (Aug 2025 – Jul 2026)Busiest: July 2026: 58,518 passengers

Show as a table

Month	Passengers
Aug 2025	44,797
Sep 2025	50,231
Oct 2025	57,763
Nov 2025	49,423
Dec 2025	53,320
Jan 2026	47,369
Feb 2026	47,926
Mar 2026	54,950
Apr 2026	49,964
May 2026	55,005
Jun 2026	55,830
Jul 2026	58,518

Flights per month, both directions (Aug 2025 – Jul 2026)Busiest: July 2026: 500 flights

Show as a table

Month	Flights
Aug 2025	486
Sep 2025	476
Oct 2025	491
Nov 2025	456
Dec 2025	485
Jan 2026	471
Feb 2026	442
Mar 2026	496
Apr 2026	477
May 2026	490
Jun 2026	493
Jul 2026	500

Airlines flying AUS–IAH nonstop

Airline	Flights / week	Passengers / year	Share of passengers
UAUnited Air Lines	102	596,313	96%
YVMesa Airlines	6.4	19,983	3%
OOSkyWest Airlines	1.7	5,510	1%
DLDelta Air Lines	0.3	1,699	0%

Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources

Aircraft on this route

Airbus Industrie A319 · 1,522 flights
Airbus Industrie A320-100/200 · 1,126 flights
Boeing 737-900ER · 718 flights
Boeing 737-800 · 715 flights
Boeing B737 Max 800 · 450 flights
Embraer ERJ-175 · 420 flights
Boeing 737-900 · 286 flights
Boeing 737-700/700LR/Max 7 · 236 flights

Also carried: 90 tonnes of freight and 2 tonnes of mail a year (passenger and cargo flights).

Punctuality

On time: 77.8%; Arrived within 15 min of schedule
Average delay: 15 min; Late arrivals count, early ones as 0
Cancelled: 0.9%
Flights counted: 5,391; Aug 2025 – Jul 2026

Airline	On time	Average delay	Cancelled	Flights
UAUnited Air Lines	77.6%	15 min	1%	5,313
OOSkyWest Airlines	87.2%	9 min	0%	78

Delay minutes by cause: airline 25% · aircraft arriving late 34% · air traffic system 35% · weather 6% · security 0%.

Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources

Delay compensation (EU261 / UK261)

Measured by great-circle distance: 225 km.

Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).

Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.

Every airport pair between Austin and Houston

	IAH	HOU
AUS	225	238

Kilometres. Linked numbers have a page of their own. All Houston airports

More routes from AUS

Route	To	Distance	Passengers / year
AUS → DEN	Denver, United States	1,247 km	1,286,637
AUS → ATL	Atlanta, United States	1,307 km	1,266,571
AUS → DFW	Dallas-Fort Worth, United States	305 km	1,097,316
AUS → LAX	Los Angeles, United States	1,999 km	873,630
AUS → PHX	Phoenix, United States	1,403 km	833,532
AUS → LAS	Las Vegas, United States	1,754 km	778,581
AUS → ORD	Chicago, United States	1,573 km	770,983
AUS → SFO	San Francisco, United States	2,420 km	719,856
AUS → MCO	Orlando, United States	1,599 km	708,209
AUS → JFK	New York, United States	2,448 km	619,705

More routes from IAH

Route	To	Distance	Passengers / year
IAH → ORD	Chicago, United States	1,489 km	1,711,056
IAH → DEN	Denver, United States	1,387 km	1,641,444
IAH → LAX	Los Angeles, United States	2,219 km	1,544,652
IAH → ATL	Atlanta, United States	1,109 km	1,430,755
IAH → DFW	Dallas-Fort Worth, United States	361 km	1,257,452
IAH → SFO	San Francisco, United States	2,632 km	1,223,236
IAH → MCO	Orlando, United States	1,375 km	1,147,728
IAH → EWR	New York, United States	2,252 km	1,135,261
IAH → LGA	New York, United States	2,279 km	1,049,227
IAH → LAS	Las Vegas, United States	1,966 km	1,028,809

Questions

Austin (AUS) and Houston (IAH) are 225 km (140 miles, 121 nautical miles) apart, measured along the shortest path over the earth's surface.