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Cheap flights from Houston George Bush Intcntl Airport to Sydney from $408

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 11/4. 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 round-trip flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
4:47 pm - 9:00 amIAH-SYD
23h 13m1 stop
Qantas Airways Logo
11:20 am - 4:17 pmSYD-IAH
21h 57m1 stop
$796Qantas Airways
Find Deal
Fri, Nov 14 - Mon, Nov 24
Qantas Airways Logo
4:47 pm - 9:00 amIAH-SYD
23h 13m1 stop
Qantas Airways Logo
11:20 am - 4:17 pmSYD-IAH
21h 57m1 stop
$823Qantas Airways
Find Deal
Fri, Nov 14 - Mon, Nov 24
American Airlines Logo
6:17 pm - 9:00 amIAH-SYD
21h 43m2 stops
American Airlines Logo
11:20 am - 5:31 pmSYD-IAH
23h 11m2 stops
$834American Airlines
Find Deal
Mon, Dec 8 - Sun, Dec 21
American Airlines Logo
4:32 pm - 6:55 amIAH-SYD
21h 23m1 stop
American Airlines Logo
11:20 am - 6:58 pmSYD-IAH
24h 38m1 stop
$835American Airlines
Find Deal
Mon, Dec 8 - Sun, Dec 21
Qantas Airways Logo
4:47 pm - 9:00 amIAH-SYD
23h 13m1 stop
Qantas Airways Logo
11:20 am - 4:15 pmSYD-IAH
21h 55m1 stop
$836Qantas Airways
Find Deal
Fri, Nov 28 - Wed, Dec 10
American Airlines Logo
4:47 pm - 9:00 amIAH-SYD
23h 13m1 stop
American Airlines Logo
2:05 pm - 5:58 pmSYD-IAH
20h 53m1 stop
$837American Airlines
Find Deal
Mon, Nov 24 - Sun, Dec 7
Delta Logo
7:40 am - 8:30 amIAH-SYD
31h 50m2 stops
Delta Logo
10:40 am - 2:15 pmSYD-IAH
20h 35m1 stop
$843Delta
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Sun, Nov 16 - Tue, Dec 2
Delta Logo
7:00 am - 8:30 amIAH-SYD
32h 30m1 stop
Delta Logo
10:40 am - 2:15 pmSYD-IAH
20h 35m1 stop
$846Delta
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Sat, Nov 15 - Tue, Dec 2
United Airlines Logo
9:35 am - 9:05 amIAH-SYD
30h 30m1 stop
United Airlines Logo
11:50 am - 10:25 amSYD-IAH
15h 35mnonstop
$847United Airlines
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Fri, Dec 5 - Fri, Dec 12
Air New Zealand Logo
8:05 pm - 10:30 amIAH-SYD
21h 25m1 stop
Air New Zealand Logo
1:55 pm - 9:23 pmSYD-IAH
24h 28m2 stops
$898Air New Zealand
Find Deal
Mon, Nov 24 - Wed, Nov 26

Air New Zealand flights from Houston George Bush Intcntl Airport to Sydney

Our best Air New Zealand deals on Houston George Bush Intcntl Airport to Sydney flight tickets
Air New Zealand
Nov 24
IAH8:05 pmHouston George Bush Intcntl
21h 25m
1 stop
SYD10:30 amSydney Kingsford Smith
Nov 26
SYD1:55 pmSydney Kingsford Smith
24h 28m
2 stops
IAH9:23 pmHouston George Bush Intcntl
$898
Find similar
Air New Zealand
Oct 29
IAH8:35 pmHouston George Bush Intcntl
20h 40m
1 stop
SYD9:15 amSydney Kingsford Smith
Nov 19
SYD11:45 amSydney Kingsford Smith
19h 20m
1 stop
IAH2:05 pmHouston George Bush Intcntl
$9,069
Find similar
Air New Zealand
Oct 28
IAH5:02 pmHouston George Bush Intcntl
24h 13m
1 stop
SYD9:15 amSydney Kingsford Smith
Nov 8
SYD1:55 pmSydney Kingsford Smith
24h 28m
2 stops
IAH9:23 pmHouston George Bush Intcntl
$9,529
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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
Dec 8
IAH6:17 pmHouston George Bush Intcntl
21h 43m
2 stops
SYD9:00 amSydney Kingsford Smith
Dec 21
SYD11:20 amSydney Kingsford Smith
23h 11m
2 stops
IAH5:31 pmHouston George Bush Intcntl
$834
Find similar
American Airlines
Dec 8
IAH4:32 pmHouston George Bush Intcntl
21h 23m
1 stop
SYD6:55 amSydney Kingsford Smith
Dec 21
SYD11:20 amSydney Kingsford Smith
24h 38m
1 stop
IAH6:58 pmHouston George Bush Intcntl
$835
Find similar
American Airlines
Nov 24
IAH4:47 pmHouston George Bush Intcntl
23h 13m
1 stop
SYD9:00 amSydney Kingsford Smith
Dec 7
SYD2:05 pmSydney Kingsford Smith
20h 53m
1 stop
IAH5:58 pmHouston George Bush Intcntl
$837
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated October 22, 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

Fri 11/14

4:47 pm-9:00 am

1 stop23h 13m

Sydney Kingsford Smith

Mon 11/24

11:20 am-4:17 pm

1 stop21h 57m

$796

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 11/14

4:47 pm-9:00 am

1 stop23h 13m

Sydney Kingsford Smith

Mon 11/24

11:20 am-4:17 pm

1 stop21h 57m

$823

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 12/8

6:17 pm-9:00 am

2 stops21h 43m

Sydney Kingsford Smith

Sun 12/21

11:20 am-5:31 pm

2 stops23h 11m

$834

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 12/8

4:32 pm-6:55 am

1 stop21h 23m

Sydney Kingsford Smith

Sun 12/21

11:20 am-6:58 pm

1 stop24h 38m

$835

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 11/28

4:47 pm-9:00 am

1 stop23h 13m

Sydney Kingsford Smith

Wed 12/10

11:20 am-4:15 pm

1 stop21h 55m

$836

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 11/24

4:47 pm-9:00 am

1 stop23h 13m

Sydney Kingsford Smith

Sun 12/7

2:05 pm-5:58 pm

1 stop20h 53m

$837

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 11/16

7:40 am-8:30 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 12/2

10:40 am-2:15 pm

1 stop20h 35m

$843

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sat 11/15

7:00 am-8:30 am

1 stop32h 30m

Sydney Kingsford Smith

Tue 12/2

10:40 am-2:15 pm

1 stop20h 35m

$846

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 12/5

9:35 am-9:05 am

1 stop30h 30m

Sydney Kingsford Smith

Fri 12/12

11:50 am-10:25 am

Nonstop15h 35m

$847

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 11/24

8:05 pm-10:30 am

1 stop21h 25m

Sydney Kingsford Smith

Wed 11/26

1:55 pm-9:23 pm

2 stops24h 28m

$898

Flights are sorted by cheapest round-trip 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?

In general, April is the cheapest month to fly from Houston George Bush Intcntl Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $932. If you are unable to visit Sydney during the month of April, then departing from Houston George Bush Intcntl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $938.

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

The cheapest day to depart from Houston George Bush Intcntl Airport to Sydney is on a Tuesday when prices can be found for as low as $1,171. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,370.

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 at noon. momondo users have found flights departing from Houston George Bush Intcntl Airport to Sydney at noon for as low as $868. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,818. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,180 when searching weeks out. 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 $931 on momondo.

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

There are 3 cabin classes 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 2% 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 round-trip 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

Best Price Found

$974

Fastest flight time

17h 30m

Direct flights

Every day

Airports in Sydney

1 airport
The best one-way flight to Sydney from Houston George Bush Intcntl Airport in the past 72 hours is $974. The best round-trip flight deal from Houston George Bush Intcntl Airport to Sydney found on momondo in the last 72 hours is $1,533.
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?

    A flight from Houston George Bush Intcntl to Sydney Kingsford Smith will travel around 8588.3 mi. Typically, this will take 20h 11m by plane in normal conditions.

  • 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 were last updated today.

  • How many operators does momondo search for flights from Houston George Bush Intcntl Airport to Sydney Kingsford Smith Airport?

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Best airlines flying from Houston George Bush Intcntl Airport to Sydney

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $799Free CancellationRating
7.5
922 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $828Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights
DeltaPriceFrom $830Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Air New ZealandPriceFrom $957Free CancellationRating
8.0
517 reviews
Search Air New Zealand flights
Fiji AirwaysPriceFrom $983Free CancellationRating
8.0
205 reviews
Search Fiji Airways flights
Air CanadaPriceFrom $1,037Free CancellationRating
7.1
10,335 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,371Free CancellationRating
7.4
8,988 reviews
Search United Airlines flights

Traveling to a place near Sydney?

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

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Houston to Sydney. momondo saves you time and could save you money on your trip.

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

All flight searches from Houston to Sydney on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Houston and Sydney by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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