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Cheap flights from Houston George Bush Intcntl Airport to Sydney from $575

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 2/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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
16:21 - 22:10
IAH
-
SYD
38h 49m
2 stops
Multiple Airlines Logo
13:20 - 01:25
SYD
-
IAH
27h 05m
2 stops
$1,315Multiple Airlines
Tue, 5 May - Wed, 27 May
Air Canada Logo
16:32 - 07:20
IAH
-
SYD
47h 48m
2 stops
Air Canada Logo
09:20 - 13:34
SYD
-
IAH
43h 14m
2 stops
$1,510Air Canada
Tue, 28 Apr - Tue, 12 May
Air Canada Logo
17:25 - 07:20
IAH
-
SYD
22h 55m
1 stop
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m
1 stop
$1,515Air Canada
Sun, 19 Apr - Mon, 4 May
Air Canada Logo
17:25 - 07:20
IAH
-
SYD
22h 55m
1 stop
Air Canada Logo
09:20 - 13:34
SYD
-
IAH
43h 14m
2 stops
$1,520Air Canada
Tue, 28 Apr - Tue, 12 May
Air Canada Logo
17:25 - 07:20
IAH
-
SYD
22h 55m
1 stop
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m
1 stop
$1,521Air Canada
Sun, 19 Apr - Mon, 4 May
Air Canada Logo
17:25 - 07:20
IAH
-
SYD
22h 55m
1 stop
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m
1 stop
$1,523Air Canada
Mon, 20 Apr - Mon, 4 May
Air Canada Logo
11:50 - 07:20
IAH
-
SYD
28h 30m
2 stops
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m
1 stop
$1,534Air Canada
Mon, 20 Apr - Mon, 4 May
Air Canada Logo
17:25 - 07:20
IAH
-
SYD
22h 55m
1 stop
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m
1 stop
$1,538Air Canada
Sun, 19 Apr - Mon, 4 May
Air Canada Logo
11:50 - 07:20
IAH
-
SYD
52h 30m
2 stops
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m
1 stop
$1,543Air Canada
Sun, 19 Apr - Mon, 4 May
Air Canada Logo
17:25 - 07:20
IAH
-
SYD
22h 55m
1 stop
Air Canada Logo
09:20 - 15:44
SYD
-
IAH
21h 24m
1 stop
$1,548Air Canada
Sun, 19 Apr - Mon, 4 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
28 Apr
IAH16:32Houston George Bush Intcntl
47h 48m
2 stops
SYD07:20Sydney Kingsford Smith
12 May
SYD09:20Sydney Kingsford Smith
43h 14m
2 stops
IAH13:34Houston George Bush Intcntl
$1,510
Air Canada
19 Apr
IAH17:25Houston George Bush Intcntl
22h 55m
1 stop
SYD07:20Sydney Kingsford Smith
4 May
SYD09:20Sydney Kingsford Smith
21h 24m
1 stop
IAH15:44Houston George Bush Intcntl
$1,515
Air Canada
28 Apr
IAH17:25Houston George Bush Intcntl
22h 55m
1 stop
SYD07:20Sydney Kingsford Smith
12 May
SYD09:20Sydney Kingsford Smith
43h 14m
2 stops
IAH13:34Houston George Bush Intcntl
$1,520

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
24 Mar
IAH19:42Houston George Bush Intcntl
21h 18m
1 stop
SYD09:00Sydney Kingsford Smith
31 Mar
SYD06:25Sydney Kingsford Smith
28h 46m
2 stops
IAH19:11Houston George Bush Intcntl
$4,060
Qantas Airways
24 Mar
IAH19:42Houston George Bush Intcntl
21h 18m
1 stop
SYD09:00Sydney Kingsford Smith
31 Mar
SYD10:10Sydney Kingsford Smith
25h 01m
1 stop
IAH19:11Houston George Bush Intcntl
$4,423
Qantas Airways
25 Mar
IAH19:42Houston George Bush Intcntl
21h 18m
1 stop
SYD09:00Sydney Kingsford Smith
30 Mar
SYD10:10Sydney Kingsford Smith
25h 01m
1 stop
IAH19:11Houston George Bush Intcntl
$4,495

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 24 March 2026.
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

Cheapest return flight

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 5/5

16:21-22:10

2 stops38h 49m

Sydney Kingsford Smith

Wed 27/5

13:20-01:25

2 stops27h 05m

$1,315

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 28/4

16:32-07:20

2 stops47h 48m

Sydney Kingsford Smith

Tue 12/5

09:20-13:34

2 stops43h 14m

$1,510
Fastest return journey

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 19/4

17:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Mon 4/5

09:20-15:44

1 stop21h 24m

$1,515

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 28/4

17:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Tue 12/5

09:20-13:34

2 stops43h 14m

$1,520

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 19/4

17:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Mon 4/5

09:20-15:44

1 stop21h 24m

$1,521

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 20/4

17:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Mon 4/5

09:20-15:44

1 stop21h 24m

$1,523

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 20/4

11:50-07:20

2 stops28h 30m

Sydney Kingsford Smith

Mon 4/5

09:20-15:44

1 stop21h 24m

$1,534

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 19/4

17:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Mon 4/5

09:20-15:44

1 stop21h 24m

$1,538

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 19/4

11:50-07:20

2 stops52h 30m

Sydney Kingsford Smith

Mon 4/5

09:20-15:44

1 stop21h 24m

$1,543

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 19/4

17:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Mon 4/5

09:20-15:44

1 stop21h 24m

$1,548

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 cheapest month to fly to Sydney?

The month of October is, on average, the cheapest month to fly to Sydney from Houston George Bush Intcntl Airport, with most prices found around $1,615. If you aren’t able to travel to Sydney during the month of October, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,667.

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 $2,049 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 $1,285 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 44% 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 March 2026, prices for Houston George Bush Intcntl Airport to Sydney flights are approximately 8% more expensive 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

None
The fastest flight from Houston George Bush Intcntl Airport to Sydney takes 17h 30m
There are no direct flights from Houston George Bush Intcntl Airport to Sydney. There are no popular flight routes from Houston George Bush Intcntl Airport to Sydney.
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 30m, 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
Manly
Coogee
Leura
Bondi Beach
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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