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Cheap flights from Houston George Bush Intcntl Airport to Sydney from $631

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston George Bush Intcntl Airport to Sydney departing on 12/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
16:47 - 09:00IAH-SYD
23h 13m1 stop
Qantas Airways Logo
11:20 - 16:17SYD-IAH
21h 57m1 stop
$1,262Qantas Airways
Find Deal
Wed, 12 Nov - Wed, 19 Nov
American Airlines Logo
17:59 - 09:00IAH-SYD
22h 01m2 stops
American Airlines Logo
11:20 - 18:58SYD-IAH
24h 38m1 stop
$1,283American Airlines
Find Deal
Sun, 7 Dec - Sun, 21 Dec
Qantas Airways Logo
16:47 - 09:00IAH-SYD
23h 13m1 stop
Qantas Airways Logo
11:20 - 16:15SYD-IAH
21h 55m1 stop
$1,287Qantas Airways
Find Deal
Fri, 28 Nov - Wed, 10 Dec
Qantas Airways Logo
16:47 - 09:00IAH-SYD
23h 13m1 stop
Qantas Airways Logo
11:20 - 16:15SYD-IAH
21h 55m1 stop
$1,288Qantas Airways
Find Deal
Fri, 28 Nov - Wed, 10 Dec
Qantas Airways Logo
17:30 - 09:00IAH-SYD
23h 30m1 stop
Qantas Airways Logo
11:20 - 16:17SYD-IAH
21h 57m1 stop
$1,291Qantas Airways
Find Deal
Thu, 30 Oct - Thu, 6 Nov
American Airlines Logo
14:12 - 09:00IAH-SYD
25h 48m1 stop
American Airlines Logo
11:20 - 19:19SYD-IAH
24h 59m1 stop
$1,299American Airlines
Find Deal
Mon, 9 Feb - Mon, 16 Feb
Delta Logo
16:00 - 08:30IAH-SYD
23h 30m1 stop
Delta Logo
09:25 - 14:16SYD-IAH
19h 51m1 stop
$1,314Delta
Find Deal
Thu, 6 Nov - Sun, 12 Apr
Delta Logo
16:00 - 08:30IAH-SYD
23h 30m1 stop
Delta Logo
10:40 - 21:11SYD-IAH
27h 31m2 stops
$1,316Delta
Find Deal
Sun, 30 Nov - Sun, 7 Dec
British Airways Logo
18:17 - 09:00IAH-SYD
21h 43m2 stops
British Airways Logo
11:20 - 17:58SYD-IAH
23h 38m2 stops
$1,582British Airways
Find Deal
Sun, 7 Dec - Sun, 21 Dec
British Airways Logo
16:45 - 09:00IAH-SYD
23h 15m1 stop
British Airways Logo
11:20 - 18:58SYD-IAH
24h 38m1 stop
$1,584British Airways
Find Deal
Sun, 7 Dec - Sun, 21 Dec

Qantas Airways flights from Houston George Bush Intcntl Airport to Sydney

Our best Qantas Airways deals on Houston George Bush Intcntl Airport to Sydney flight tickets
Qantas Airways
22 Oct
IAH17:30Houston George Bush Intcntl
22h 00m
1 stop
SYD07:30Sydney Kingsford Smith
24 Oct
SYD10:10Sydney Kingsford Smith
22h 48m
1 stop
IAH16:58Houston George Bush Intcntl
$1,239
Find similar
Qantas Airways
12 Nov
IAH16:47Houston George Bush Intcntl
23h 13m
1 stop
SYD09:00Sydney Kingsford Smith
19 Nov
SYD11:20Sydney Kingsford Smith
21h 57m
1 stop
IAH16:17Houston George Bush Intcntl
$1,262
Find similar
Qantas Airways
20 Oct
IAH17:30Houston George Bush Intcntl
22h 35m
1 stop
SYD08:05Sydney Kingsford Smith
10 Nov
SYD11:20Sydney Kingsford Smith
21h 57m
1 stop
IAH16:17Houston George Bush Intcntl
$1,267
Find similar

American Airlines flights from Houston George Bush Intcntl Airport to Sydney

Our best American Airlines deals on Houston George Bush Intcntl Airport to Sydney flight tickets
American Airlines
7 Dec
IAH17:59Houston George Bush Intcntl
22h 01m
2 stops
SYD09:00Sydney Kingsford Smith
21 Dec
SYD11:20Sydney Kingsford Smith
24h 38m
1 stop
IAH18:58Houston George Bush Intcntl
$1,283
Find similar
American Airlines
9 Feb
IAH14:12Houston George Bush Intcntl
25h 48m
1 stop
SYD09:00Sydney Kingsford Smith
16 Feb
SYD11:20Sydney Kingsford Smith
24h 59m
1 stop
IAH19:19Houston George Bush Intcntl
$1,299
Find similar
American Airlines
17 Nov
IAH12:10Houston George Bush Intcntl
25h 45m
1 stop
SYD06:55Sydney Kingsford Smith
24 Nov
SYD14:05Sydney Kingsford Smith
20h 30m
1 stop
IAH17:35Houston George Bush Intcntl
$1,300
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Houston George Bush Intcntl Airport to Sydney 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, momondo users made 78,305 searches. Data last updated 19 October 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 12/11

16:47-09:00

1 stop23h 13m

Sydney Kingsford Smith

Wed 19/11

11:20-16:17

1 stop21h 57m

$1,262

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 7/12

17:59-09:00

2 stops22h 01m

Sydney Kingsford Smith

Sun 21/12

11:20-18:58

1 stop24h 38m

$1,283

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 28/11

16:47-09:00

1 stop23h 13m

Sydney Kingsford Smith

Wed 10/12

11:20-16:15

1 stop21h 55m

$1,287

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 28/11

16:47-09:00

1 stop23h 13m

Sydney Kingsford Smith

Wed 10/12

11:20-16:15

1 stop21h 55m

$1,288

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Thu 30/10

17:30-09:00

1 stop23h 30m

Sydney Kingsford Smith

Thu 6/11

11:20-16:17

1 stop21h 57m

$1,291

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 9/2

14:12-09:00

1 stop25h 48m

Sydney Kingsford Smith

Mon 16/2

11:20-19:19

1 stop24h 59m

$1,299

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Thu 6/11

16:00-08:30

1 stop23h 30m

Sydney Kingsford Smith

Sun 12/4

09:25-14:16

1 stop19h 51m

$1,314

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 30/11

16:00-08:30

1 stop23h 30m

Sydney Kingsford Smith

Sun 7/12

10:40-21:11

2 stops27h 31m

$1,316

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 7/12

18:17-09:00

2 stops21h 43m

Sydney Kingsford Smith

Sun 21/12

11:20-17:58

2 stops23h 38m

$1,582

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 7/12

16:45-09:00

1 stop23h 15m

Sydney Kingsford Smith

Sun 21/12

11:20-18:58

1 stop24h 38m

$1,584

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Houston George Bush Intcntl Airport to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Houston George Bush Intcntl Airport and Sydney?

What is the cheapest month to fly to Sydney?

The month of April is, on average, the cheapest month to fly to Sydney from Houston George Bush Intcntl Airport, with most prices found around $1,434. If you aren’t able to travel to Sydney during the month of April, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,444.

What is the cheapest day to depart on your flight to Sydney?

Our data shows that Wednesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,652. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $2,887.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from Houston George Bush Intcntl Airport to Sydney in the afternoon for as low as $1,591. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $3,326 on average. Flights to Sydney from Houston George Bush Intcntl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Houston George Bush Intcntl to Sydney Kingsford Smith flight route?

Fly from Houston George Bush Intcntl to Sydney Kingsford Smith for the best Houston George Bush Intcntl - Sydney Kingsford Smith flight prices

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,815 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Houston George Bush Intcntl Airport for as low as $1,433 on momondo.

What cabin class options are available on Houston George Bush Intcntl to Sydney Kingsford Smith flights?

There is only 1 cabin class available to choose from on Houston George Bush Intcntl to Sydney Kingsford Smith flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Houston George Bush Intcntl Airport to Sydney flights?

You could potentially save up to 23% on your flight if you consider stops on a Houston George Bush Intcntl Airport to Sydney flight.

How have Houston George Bush Intcntl Airport to Sydney flight prices changed over time?

As of October 2025, prices for Houston George Bush Intcntl Airport to Sydney flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from Houston George Bush Intcntl Airport to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Houston George Bush Intcntl Airport to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Houston George Bush Intcntl Airport to Sydney (IAH to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston George Bush Intcntl Airport to Sydney

Fastest flight time

17h 30m

Direct flights

Every day

Airports in Sydney

1 airport
The fastest flight from Houston George Bush Intcntl Airport to Sydney takes 17h 30m
Direct flights go from Houston George Bush Intcntl Airport to Sydney every day.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)
Search flight deals

  • How far is Houston George Bush Intcntl to Sydney Kingsford Smith by plane?

    There are 13821.4 km between Houston George Bush Intcntl and Sydney Kingsford Smith. Flights usually cover this in 21h 38m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Houston George Bush Intcntl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Houston George Bush Intcntl Airport to Sydney Kingsford Smith Airport are updated daily.

  • How old do you have to be to fly from Houston George Bush Intcntl Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Houston George Bush Intcntl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Houston George Bush Intcntl Airport to Sydney?

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Terrigal
Penrith
Katoomba
Lithgow
Leura
Manly
Bondi Beach
Coogee
Randwick
Cronulla
Charlestown
Newport
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Houston to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Houston to Sydney for you.

Can I find flights from Houston to Sydney with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sydney from Houston with this policy.

How can momondo help me find flights from Houston to Sydney?

Once you have performed a search for Houston to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Houston to Sydney right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Houston to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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