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Cheap flights from Houston George Bush Intcntl Airport to Sydney from $756

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 10/2. 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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Find the cheapest flights from Houston George Bush Intcntl Airport to Sydney

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
16:13 - 12:35
IAH
-
SYD
27h 22m2 stops
Multiple Airlines Logo
14:00 - 00:30
SYD
-
IAH
27h 30m2 stops
$1,393Multiple Airlines
Sun, 8 Feb - Sun, 22 Feb
Air Canada Logo
17:25 - 09:35
IAH
-
SYD
23h 10m1 stop
Air Canada Logo
11:20 - 13:34
SYD
-
IAH
42h 14m2 stops
$1,408Air Canada
Wed, 18 Feb - Mon, 9 Mar
Air Canada Logo
07:10 - 09:35
IAH
-
SYD
33h 25m2 stops
Air Canada Logo
10:25 - 13:34
SYD
-
IAH
43h 09m2 stops
$1,417Air Canada
Mon, 2 Mar - Mon, 16 Mar
Air Canada Logo
16:30 - 07:20
IAH
-
SYD
47h 50m2 stops
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m1 stop
$1,431Air Canada
Mon, 4 May - Wed, 13 May
Air Canada Logo
17:25 - 09:35
IAH
-
SYD
23h 10m1 stop
Air Canada Logo
11:20 - 16:24
SYD
-
IAH
21h 04m1 stop
$1,443Air Canada
Wed, 18 Feb - Mon, 9 Mar
American Airlines Logo
19:30 - 09:00
IAH
-
SYD
20h 30m1 stop
American Airlines Logo
11:20 - 19:00
SYD
-
IAH
24h 40m2 stops
$1,455American Airlines
Tue, 24 Feb - Tue, 3 Mar
Air Canada Logo
10:00 - 07:20
IAH
-
SYD
30h 20m3 stops
Air Canada Logo
09:20 - 19:00
SYD
-
IAH
48h 40m2 stops
$1,456Air Canada
Tue, 5 May - Tue, 19 May
Air Canada Logo
10:00 - 07:20
IAH
-
SYD
30h 20m3 stops
Air Canada Logo
09:20 - 19:00
SYD
-
IAH
48h 40m2 stops
$1,458Air Canada
Mon, 4 May - Wed, 13 May
Air Canada Logo
17:25 - 09:35
IAH
-
SYD
23h 10m1 stop
Air Canada Logo
11:20 - 13:34
SYD
-
IAH
43h 14m2 stops
$1,473Air Canada
Wed, 11 Feb - Sat, 21 Feb
Air Canada Logo
10:00 - 07:20
IAH
-
SYD
30h 20m2 stops
Air Canada Logo
09:20 - 13:39
SYD
-
IAH
43h 19m2 stops
$1,478Air Canada
Wed, 20 May - Fri, 29 May

Air Canada flights from Houston George Bush Intcntl Airport to Sydney

Our best Air Canada deals on Houston George Bush Intcntl Airport to Sydney flight tickets
Air Canada
18 Feb
IAH17:25Houston George Bush Intcntl
23h 10m
1 stop
SYD09:35Sydney Kingsford Smith
9 Mar
SYD11:20Sydney Kingsford Smith
42h 14m
2 stops
IAH13:34Houston George Bush Intcntl
$1,408
Find similar
Air Canada
2 Mar
IAH07:10Houston George Bush Intcntl
33h 25m
2 stops
SYD09:35Sydney Kingsford Smith
16 Mar
SYD10:25Sydney Kingsford Smith
43h 09m
2 stops
IAH13:34Houston George Bush Intcntl
$1,417
Find similar
Air Canada
4 May
IAH16:30Houston George Bush Intcntl
47h 50m
2 stops
SYD07:20Sydney Kingsford Smith
13 May
SYD09:20Sydney Kingsford Smith
21h 24m
1 stop
IAH15:44Houston George Bush Intcntl
$1,431
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
24 Feb
IAH19:30Houston George Bush Intcntl
20h 30m
1 stop
SYD09:00Sydney Kingsford Smith
3 Mar
SYD11:20Sydney Kingsford Smith
24h 40m
2 stops
IAH19:00Houston George Bush Intcntl
$1,455
Find similar
American Airlines
18 Feb
IAH19:30Houston George Bush Intcntl
20h 30m
1 stop
SYD09:00Sydney Kingsford Smith
9 Mar
SYD11:20Sydney Kingsford Smith
23h 51m
1 stop
IAH19:11Houston George Bush Intcntl
$1,479
Find similar
American Airlines
21 Apr
IAH19:46Houston George Bush Intcntl
20h 19m
1 stop
SYD07:05Sydney Kingsford Smith
12 May
SYD09:10Sydney Kingsford Smith
25h 06m
1 stop
IAH19:16Houston George Bush Intcntl
$1,481
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 20 December 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

Sun 8/2

16:13-12:35

2 stops27h 22m

Sydney Kingsford Smith

Sun 22/2

14:00-00:30

2 stops27h 30m

$1,393

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 18/2

17:25-09:35

1 stop23h 10m

Sydney Kingsford Smith

Mon 9/3

11:20-13:34

2 stops42h 14m

$1,408

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 2/3

07:10-09:35

2 stops33h 25m

Sydney Kingsford Smith

Mon 16/3

10:25-13:34

2 stops43h 09m

$1,417

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 4/5

16:30-07:20

2 stops47h 50m

Sydney Kingsford Smith

Wed 13/5

09:20-15:44

1 stop21h 24m

$1,431

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 18/2

17:25-09:35

1 stop23h 10m

Sydney Kingsford Smith

Mon 9/3

11:20-16:24

1 stop21h 04m

$1,443

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 24/2

19:30-09:00

1 stop20h 30m

Sydney Kingsford Smith

Tue 3/3

11:20-19:00

2 stops24h 40m

$1,455

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 5/5

10:00-07:20

3 stops30h 20m

Sydney Kingsford Smith

Tue 19/5

09:20-19:00

2 stops48h 40m

$1,456

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 4/5

10:00-07:20

3 stops30h 20m

Sydney Kingsford Smith

Wed 13/5

09:20-19:00

2 stops48h 40m

$1,458

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 11/2

17:25-09:35

1 stop23h 10m

Sydney Kingsford Smith

Sat 21/2

11:20-13:34

2 stops43h 14m

$1,473

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 20/5

10:00-07:20

2 stops30h 20m

Sydney Kingsford Smith

Fri 29/5

09:20-13:39

2 stops43h 19m

$1,478

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 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 $1,456. If you aren’t able to travel to Sydney during the month of April, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,520.

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 $1,624. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $2,838.

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 $1,564. 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 $3,164 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 $1,834 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 $1,343 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.

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

As of December 2025, prices for Houston George Bush Intcntl Airport to Sydney flights are approximately 52% 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 35m

Direct flights

Every day

Airports in Sydney

1 airport
The fastest flight from Houston George Bush Intcntl Airport to Sydney takes 17h 35m
Direct flights go from Houston George Bush Intcntl Airport to Sydney every day.
There is 1 airport in Sydney. From Houston George Bush Intcntl Airport there are direct flights to 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 17h 35m, 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
Cronulla
Randwick
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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