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Flights from Houston to Sydney – Direct & connecting routes

Non-stop airlines Connecting flights Show map Price search

IAH to SYD flights and routes map IAH to SYD – All flight route options from George Bush Intcntl Houston, Texas, USA to Kingsford Smith International Airport, Australia. These flights are operated by 8 airlines. Fly non-stop with United Airlines or choose from 7 different transit flights. The shortest flight time is 17 hours and 30 minutes. See the full flight schedule and time table, including departure times, airlines and stopover details to find the best option for you.

From
To
USA IAH George Bush Intcntl Houston Houston, TX, USA
Australia SYD Kingsford Smith Airport, NS, Australia
IAH
George Bush Intcntl Houston
USAHouston, TX, USA
Kingsford Smith Airport
AustraliaSydney, NS, Australia
SYD
1 direct route found »
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14 routes with 1 stop found »
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Non-stop route options:

Duration

United Airlines
Non-stop with United Airlines. 1 flight per day.
Begins in 25/10

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17h 30m

Begins in 25/10
United Airlines
Non-stop with United Airlines.
17h 30m
1 flight per day.
Begins in 25/10
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1 stop route options with the same airline:

Duration

Via Auckland AKL
1 stop with Air New Zealand. 0-1 flights per day.

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21h 20m

Via Auckland AKL
1 stop with Air New Zealand.
21h 20m
0-1 flights per day.
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Via Los Angeles LAX
1 stop with American Airlines. 1-2 flights per day.

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21h 45m

Via Los Angeles LAX
1 stop with American Airlines.
21h 45m
1-2 flights per day.
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Via San Francisco SFO
1 stop with United Airlines. 2 flights per day.

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22h 45m

Via San Francisco SFO
1 stop with United Airlines.
22h 45m
2 flights per day.
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Via Vancouver YVR
1 stop with Air Canada. 0-1 flights per day.

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23h 30m

Via Vancouver YVR
1 stop with Air Canada.
23h 30m
0-1 flights per day.
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Via Los Angeles LAX
1 stop with United Airlines. 2-4 flights per day.

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23h 30m

Via Los Angeles LAX
1 stop with United Airlines.
23h 30m
2-4 flights per day.
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Via Los Angeles LAX
1 stop with Delta Air Lines. 0-1 flights per day.

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23h 35m

Via Los Angeles LAX
1 stop with Delta Air Lines.
23h 35m
0-1 flights per day.
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Via Toronto YYZ
1 stop with Air Canada.

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28h 30m

Via Toronto YYZ
1 stop with Air Canada.
28h 30m
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1 stop route options with codeshare or different airlines:

Duration

Via Auckland AKL With Air New Zealand & LATAM Airlines 0-1 flights per day.

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20h 40m

Via Auckland AKL
20h 40m
With Air New Zealand & LATAM Airlines 0-1 flights per day.
LATAMAIRLINES.COM
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Via Dallas DFW 1 stop with American Airlines. 2 flights per day.
CODESHARE

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21h 43m

Via Dallas DFW
21h 43m
1 stop with American Airlines. 2 flights per day.
CODESHARE
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Via Los Angeles LAX With American Airlines & Alaska Airlines 1-2 flights per day.
CODESHARE

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21h 45m

Via Los Angeles LAX
21h 45m
With American Airlines & Alaska Airlines 1-2 flights per day.
CODESHARE
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Via San Francisco SFO 1 stop with Air New Zealand. 2 flights per day.
CODESHARE

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22h 25m

Via San Francisco SFO
22h 25m
1 stop with Air New Zealand. 2 flights per day.
CODESHARE
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Via Vancouver YVR With Air Canada & American Airlines 0-1 flights per day.
Mon,Wed & Sat
CODESHARE

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22h 45m

Mon,Wed & Sat
Via Vancouver YVR
22h 45m
With Air Canada & American Airlines 0-1 flights per day.
Mon,Wed & Sat
CODESHARE
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Via Ontario ONT With United Airlines & Delta Air Lines
Only fridays

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23h 15m

Only fridays
Via Ontario ONT
23h 15m
With United Airlines & Delta Air Lines
Only fridays
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Via Toronto YYZ 1 stop with Air Canada. 0-1 flights per day.
CODESHARE

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28h 30m

Via Toronto YYZ
28h 30m
1 stop with Air Canada. 0-1 flights per day.
CODESHARE
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Find the best prices on hotels and car rental near Kingsford Smith Airport

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Houston to Sydney flights

With over 555 flights every week and 8 different airlines you have a wide range of options. You can fly non-stop to Sydney (SYD) from Houston (IAH) with United Airlines but if a stopover option suits you better you can choose to fly via Auckland, Dallas or any other of the 7 alternatives with connectiing airports.

Tip! You can also fly to Sydney from William P. Hobby Airport (HOU).

Houston to Sydney with United Airlines

You can fly non-stop every weekday with flights departing at 20:25 or 21:30. You can also take a connecting flight via San Francisco or Los Angeles. United Airlines is a Star Alliance member.

Note Non-stop flights with United Airlines will begin in Oct 2025.

With Air New Zealand

If you fly from Houston with Air New Zealand you will do a stopover in Auckland, AKL before reaching Sydney. This flight trip will take 21 hours and 20 minutes and you can fly every day of the week except Mondays and Tuesday with departures at 20 or 21 in the evening. Air New Zealand is a Star Alliance member.

Distance & flight times: Houston Airport to Sydney Airport

The shortest flight time between IAH and SYD is 17 hours and 30 minutes.

ViaTotal flight timeLayover timeDistance
Direct17h 30m-8645 miles (13910 km)
AKL Auckland20h 40m2h 0m8812 miles (14179 km)
DFW Dallas21h 43m1h 27m8853 miles (14244 km)
LAX Los Angeles21h 45m4h 0m8920 miles (14352 km)
SFO San Francisco22h 25m4h 25m9108 miles (14655 km)
YVR Vancouver22h 45m2h 34m9791 miles (15754 km)
ONT Ontario23h 15m--
YYZ Toronto28h 30m2h 21m11005 miles (17707 km)
The flight times and layover times in the table above are approximate and may vary depending on flight number, aircraft, airline, weather, and time of day.IAH-SYD flight routesHouston to Sydney flight routes illustrated on a map.
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Houston - Sydney route map and flight paths
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From Houston to Australia

Below is a list of other destinations to Australia from George Bush Intcntl Houston with either direct flights or 1 stop connections.

From USA to Sydney

Below is a list of other cities in USA with flights to Sydney with either non-stop or connecting flights.

You can fly non-stop from Houston (IAH) to Sydney (SYD) with United Airlines. The flight takes approximately 17 hours and 30 minutes. If you travel with a connecting flight instead, for example via Auckland, the total flight time will be 20 hours and 40 minutes.

If you're interested in direct flights, United Airlines is available. For flights with stopovers, Air New Zealand, LATAM Airlines, American Airlines, Air Canada, United Airlines or Delta Air Lines is also an option.

The flight time between George Bush Intcntl Houston (IAH) and Kingsford Smith International Airport (SYD) is approximately 17 hours and 30 minutes. The distance between the two airports is 8853 miles (or 14244 kilometers).

Yes, you can fly non-stop to SYD from IAH with United Airlines.

A codeshare agreement means that cooperating airlines are able to sell seats on each other’s flights. This means that you are able to travel to more destinations than your airline of choice normally offers. Codeshare flights are also beneficial because of the seamless transits you can get with connecting flights from the same airline. The downside of choosing a codeshare flight can be that you in some cases can’t upgrade codeshare flights or use elite benefits.

A connecting or transit flight means that you reach your final destination through two or more flights – in other words a non-direct flight. You will change to a new aircraft after your first flight, this may include moving to another terminal at the airport aswell. The time required to transfer passengers and luggage between flights is called Minimum Connecting Time (MCT) and are always taken into account here on Flightroutes.com.

If you bought your whole flight on a single ticket, the airline will book you on the next available connecting flight.

With connecting flights, checked in luggage is most commonly forwarded to your final destination when buying a single ticket for both flights.

If you miss your connecting flight due to circumstances outside your control such as your first flight being delayed, you should turn to your airline who will provide you with a seat on the next available flight. This is usually done free of charge, and only applies if you purchased your trip as one ticket. If the next connecting flight is the following day, the airline usually provides accommodation and meals.
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