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Cheap flights from Houston George Bush Intcntl Airport to Australia from $645

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — SYD
15 Nov — 22 Nov1
1 adult
1 adult, Economy

Cheap flight deals from George Bush Intcntl to Australia

Keep the following information in mind while searching for George Bush Intcntl to Australia flight deals. Data was last updated 16 October 2025.

Round-trip from

$1,279

One-way from

$650

Popular in

December

Cheapest in

July

Average price

$1,635
Qantas Airways
  • Qantas Airways
  • 29/10-9/11
  • 2 total stops
  • 42h 47m total
  • Houston to Australia
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American Airlines
  • American Airlines
  • 3/11
  • 2 total stops
  • 23h 28m total
  • Houston to Australia
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($816 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($161 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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Find flight deals from George Bush Intcntl to Australia

Enter your travel dates to find the best prices.

Cheapest flights from George Bush Intcntl to Australia
Explore the most affordable flight options available from George Bush Intcntl to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 October 2025.

Wed 29/1020:10IAH - SYD
1 stop20h 50mQantas Airways
Sun 9/1111:20SYD - IAH
1 stop21h 57mQantas Airways
Deal found 15/10$1,279
Sun 30/1117:45IAH - SYD
1 stop20h 10mAmerican Airlines
Sun 7/1214:05SYD - IAH
1 stop20h 53mAmerican Airlines
Deal found 16/10$1,298
Tue 28/1017:23IAH - SYD
1 stop23h 37mQantas Airways
Sat 8/1111:20SYD - IAH
1 stop21h 57mQantas Airways
Deal found 16/10$1,299
Sun 7/1207:25IAH - SYD
1 stop30h 30mAmerican Airlines
Sat 27/1211:20SYD - IAH
1 stop24h 38mAmerican Airlines
Deal found 15/10$1,302
Sat 15/1116:47IAH - SYD
1 stop21h 38mAmerican Airlines
Tue 21/412:10SYD - IAH
1 stop25h 32mAmerican Airlines
Deal found 15/10$1,304
Tue 28/1018:23IAH - SYD
2 stops22h 37mAmerican Airlines
Sat 8/1111:20SYD - IAH
2 stops21h 39mAmerican Airlines
Deal found 16/10$1,307
Tue 11/1116:32IAH - SYD
2 stops23h 28mAmerican Airlines
Sat 2/517:45SYD - IAH
2 stops20h 59mAmerican Airlines
Deal found 15/10$1,308
Thu 13/1108:05IAH - SYD
1 stop29h 50mAmerican Airlines
Wed 3/1217:45SYD - IAH
2 stops21h 38mAmerican Airlines
Deal found 15/10$1,310
Sun 23/1116:47IAH - SYD
1 stop23h 13mAmerican Airlines
Mon 29/1211:20SYD - IAH
1 stop24h 38mAmerican Airlines
Deal found 15/10$1,311
Sat 15/1116:32IAH - SYD
2 stops23h 28mAmerican Airlines
Sat 18/417:45SYD - IAH
2 stops20h 59mAmerican Airlines
Deal found 15/10$1,313
Sat 6/1212:11IAH - SYD
1 stop25h 44mAmerican Airlines
Wed 31/1211:20SYD - IAH
1 stop24h 38mAmerican Airlines
Deal found 15/10$1,318
Tue 11/1114:05IAH - BNE
2 stops28h 05mMultiple Airlines
Tue 18/1111:35BNE - IAH
2 stops26h 29mMultiple Airlines
Deal found 14/10$1,459

Cheapflights Fare Finder

 
Customise your flight search to find flights from George Bush Intcntl to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 16 October 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Australia that are best for you.

Fly from

George Bush Intcntl

Fly to

Australia

Route

Depart

Return

Price

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 19/11

16:00-08:30

1 stop23h 30m

Sydney Kingsford Smith

Fri 5/12

10:40-14:15

1 stop20h 35m

$1,327

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Thu 13/11

16:00-08:30

1 stop23h 30m

Sydney Kingsford Smith

Mon 20/4

09:25-14:24

1 stop19h 59m

$1,327

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Thu 12/3

16:00-06:05

1 stop22h 05m

Sydney Kingsford Smith

Thu 26/3

09:40-14:16

1 stop20h 36m

$1,331

HoustonMelbourne

IAH - MEL

IAHMEL

Houston George Bush Intcntl

Thu 9/4

19:46-10:35

2 stops23h 49m

Melbourne

Thu 16/4

06:00-19:16

2 stops28h 16m

$1,652

HoustonCanberra

IAH - CBR

IAHCBR

Houston George Bush Intcntl

Sat 15/11

18:28-13:05

2 stops25h 37m

Canberra

Sat 22/11

14:10-17:58

2 stops20h 48m

$1,711

HoustonBrisbane

IAH - BNE

IAHBNE

Houston George Bush Intcntl

Wed 18/2

19:49-11:05

2 stops23h 16m

Brisbane

Thu 12/3

07:15-19:16

2 stops27h 01m

$1,740

HoustonCanberra

IAH - CBR

IAHCBR

Houston George Bush Intcntl

Sat 1/11

17:30-07:30

2 stops46h 00m

Canberra

Wed 5/11

08:00-16:17

2 stops25h 17m

$1,837

HoustonPerth

IAH - PER

IAHPER

Houston George Bush Intcntl

Wed 18/3

19:52-12:25

2 stops27h 33m

Perth

Wed 22/4

23:55-19:16

2 stops32h 21m

$1,981

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sat 29/11

05:15-08:30

2 stops34h 15m

Sydney Kingsford Smith

Fri 19/12

10:40-21:11

2 stops27h 31m

$1,987

HoustonMelbourne

IAH - MEL

IAHMEL

Houston George Bush Intcntl

Thu 12/3

19:52-09:30

1 stop21h 38m

Melbourne

Thu 19/3

08:15-19:16

2 stops27h 01m

$2,004

Flights are sorted by cheapest return flights first.

Deals found on 16/10

Showing 1-10 of 60 results
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Best time to book a flight from George Bush Intcntl to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from George Bush Intcntl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to Australia

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Australia?

Currently, July is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Australia (average of $399). Flying from Houston George Bush Intcntl Airport to Australia in December is currently the most expensive (average of $1,401). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAH to AU?

Find hourly flight availability from George Bush Intcntl to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 October 2025.

When flying from Houston George Bush Intcntl Airport to Australia, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 51% versus a flight in the evening.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Houston George Bush Intcntl Airport to Australia?

    For as low as $1,327, Delta can have you in Australia from Houston George Bush Intcntl Airport in 23h 30m. Houston George Bush Intcntl Airport and Australia are separated by a distance of 13826 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Houston George Bush Intcntl Airport to Australia one-way?

    $654 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Qantas Airways, with prices starting from $668 and $682, respectively.

  • What are the most popular routes from Houston George Bush Intcntl Airport to Australia?

    While some choose either Houston George Bush Intcntl - Melbourne or Houston George Bush Intcntl - Melbourne Avalon, Houston George Bush Intcntl - Sydney Kingsford Smith is the most popular route from Houston George Bush Intcntl Airport to Australia.

  • Can I find deals for flights from George Bush Intcntl to Australia that include hotel bookings?

    Yes. In addition to deals on George Bush Intcntl to Australia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from George Bush Intcntl to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to Australia.

  • Can I find deals for business class flights from George Bush Intcntl to Australia?

    Yes. Cheapflights offers flight deals from George Bush Intcntl to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Australia?

    Currently, July is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Australia (average of $399). Flying from Houston George Bush Intcntl Airport to Australia in December is currently the most expensive (average of $1,401). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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