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Cheap flights from Houston George Bush Intcntl Airport to Sydney from $501

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 2/18. 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.
Multiple Airlines Logo
4:13 pm - 12:35 pm
IAH
-
SYD
27h 22m2 stops
Multiple Airlines Logo
2:00 pm - 12:30 am
SYD
-
IAH
27h 30m2 stops
$876Multiple Airlines
Sun, Feb 1 - Sun, Feb 15
Air Canada Logo
5:25 pm - 9:35 am
IAH
-
SYD
23h 10m1 stop
Air Canada Logo
10:25 am - 1:34 pm
SYD
-
IAH
43h 09m2 stops
$931Air Canada
Mon, Mar 2 - Mon, Mar 16
Air Canada Logo
7:10 am - 9:35 am
IAH
-
SYD
33h 25m2 stops
Air Canada Logo
10:25 am - 1:34 pm
SYD
-
IAH
43h 09m2 stops
$937Air Canada
Mon, Mar 2 - Mon, Mar 16
Air Canada Logo
4:30 pm - 7:20 am
IAH
-
SYD
47h 50m2 stops
Air Canada Logo
9:20 am - 3:44 pm
SYD
-
IAH
21h 24m1 stop
$946Air Canada
Mon, May 4 - Wed, May 13
Air Canada Logo
5:25 pm - 9:35 am
IAH
-
SYD
23h 10m1 stop
Air Canada Logo
11:20 am - 4:24 pm
SYD
-
IAH
22h 04m1 stop
$954Air Canada
Tue, Feb 24 - Tue, Mar 3
Air Canada Logo
9:35 am - 7:20 am
IAH
-
SYD
30h 45m2 stops
Air Canada Logo
9:20 am - 1:39 pm
SYD
-
IAH
43h 19m2 stops
$958Air Canada
Tue, Apr 21 - Tue, May 12
Air Canada Logo
10:00 am - 7:20 am
IAH
-
SYD
30h 20m3 stops
Air Canada Logo
9:20 am - 7:00 pm
SYD
-
IAH
48h 40m2 stops
$964Air Canada
Mon, May 4 - Wed, May 13
Air Canada Logo
4:30 pm - 7:20 am
IAH
-
SYD
47h 50m2 stops
Air Canada Logo
9:20 am - 1:39 pm
SYD
-
IAH
43h 19m2 stops
$966Air Canada
Sat, Apr 18 - Thu, Apr 23
Air Canada Logo
5:25 pm - 9:35 am
IAH
-
SYD
23h 10m1 stop
Air Canada Logo
11:20 am - 1:34 pm
SYD
-
IAH
43h 14m2 stops
$974Air Canada
Wed, Feb 18 - Sat, Feb 28
Air Canada Logo
10:00 am - 7:20 am
IAH
-
SYD
30h 20m2 stops
Air Canada Logo
9:20 am - 1:39 pm
SYD
-
IAH
43h 19m2 stops
$977Air Canada
Wed, May 20 - Fri, May 29

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
Mar 2
IAH5:25 pmHouston George Bush Intcntl
23h 10m
1 stop
SYD9:35 amSydney Kingsford Smith
Mar 16
SYD10:25 amSydney Kingsford Smith
43h 09m
2 stops
IAH1:34 pmHouston George Bush Intcntl
$931
Find similar
Air Canada
Mar 2
IAH7:10 amHouston George Bush Intcntl
33h 25m
2 stops
SYD9:35 amSydney Kingsford Smith
Mar 16
SYD10:25 amSydney Kingsford Smith
43h 09m
2 stops
IAH1:34 pmHouston George Bush Intcntl
$937
Find similar
Air Canada
May 4
IAH4:30 pmHouston George Bush Intcntl
47h 50m
2 stops
SYD7:20 amSydney Kingsford Smith
May 13
SYD9:20 amSydney Kingsford Smith
21h 24m
1 stop
IAH3:44 pmHouston George Bush Intcntl
$946
Find similar

United Airlines flights from Houston George Bush Intcntl Airport to Sydney

Our best United Airlines deals on Houston George Bush Intcntl Airport to Sydney flight tickets
United Airlines
Dec 29
IAH8:25 pmHouston George Bush Intcntl
17h 35m
SYD7:00 amSydney Kingsford Smith
Jan 12
SYD11:50 amSydney Kingsford Smith
15h 35m
IAH10:25 amHouston George Bush Intcntl
$1,748
Find similar
United Airlines
Dec 29
IAH8:25 pmHouston George Bush Intcntl
17h 35m
SYD7:00 amSydney Kingsford Smith
Jan 12
SYD11:50 amSydney Kingsford Smith
15h 35m
IAH10:25 amHouston George Bush Intcntl
$1,749
Find similar
United Airlines
Dec 29
IAH2:25 pmHouston George Bush Intcntl
25h 40m
1 stop
SYD9:05 amSydney Kingsford Smith
Jan 12
SYD11:50 amSydney Kingsford Smith
15h 35m
IAH10:25 amHouston George Bush Intcntl
$1,753
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 December 18, 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 2/1

4:13 pm-12:35 pm

2 stops27h 22m

Sydney Kingsford Smith

Sun 2/15

2:00 pm-12:30 am

2 stops27h 30m

$876

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 3/2

5:25 pm-9:35 am

1 stop23h 10m

Sydney Kingsford Smith

Mon 3/16

10:25 am-1:34 pm

2 stops43h 09m

$931

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 3/2

7:10 am-9:35 am

2 stops33h 25m

Sydney Kingsford Smith

Mon 3/16

10:25 am-1:34 pm

2 stops43h 09m

$937

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 5/4

4:30 pm-7:20 am

2 stops47h 50m

Sydney Kingsford Smith

Wed 5/13

9:20 am-3:44 pm

1 stop21h 24m

$946

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 2/24

5:25 pm-9:35 am

1 stop23h 10m

Sydney Kingsford Smith

Tue 3/3

11:20 am-4:24 pm

1 stop22h 04m

$954

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 4/21

9:35 am-7:20 am

2 stops30h 45m

Sydney Kingsford Smith

Tue 5/12

9:20 am-1:39 pm

2 stops43h 19m

$958

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 5/4

10:00 am-7:20 am

3 stops30h 20m

Sydney Kingsford Smith

Wed 5/13

9:20 am-7:00 pm

2 stops48h 40m

$964

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sat 4/18

4:30 pm-7:20 am

2 stops47h 50m

Sydney Kingsford Smith

Thu 4/23

9:20 am-1:39 pm

2 stops43h 19m

$966

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 2/18

5:25 pm-9:35 am

1 stop23h 10m

Sydney Kingsford Smith

Sat 2/28

11:20 am-1:34 pm

2 stops43h 14m

$974

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 5/20

10:00 am-7:20 am

2 stops30h 20m

Sydney Kingsford Smith

Fri 5/29

9:20 am-1:39 pm

2 stops43h 19m

$977

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 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 $963. If you are unable to visit Sydney during the month of April, then departing from Houston George Bush Intcntl Airport during the month March is also very affordable. Most momondo users find prices during this month for around $1,005.

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 $1,715. 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 $1,213 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 $888 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 50% 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 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 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

$846

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 $846. The best round-trip flight deal from Houston George Bush Intcntl Airport to Sydney found on momondo in the last 72 hours is $1,546.
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 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?

    A flight from Houston George Bush Intcntl to Sydney Kingsford Smith will travel around 8588.3 mi. Typically, this will take 17h 30m 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
DeltaPriceFrom $337Free CancellationRating
7.9
8,006 reviews
Search Delta flights
Qantas AirwaysPriceFrom $799Free CancellationRating
7.5
946 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $825Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights
United AirlinesPriceFrom $876Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
Air New ZealandPriceFrom $957Free CancellationRating
8.0
552 reviews
Search Air New Zealand flights
Fiji AirwaysPriceFrom $983Free CancellationRating
8.1
210 reviews
Search Fiji Airways flights
Air CanadaPriceFrom $1,037Free CancellationRating
7.1
10,532 reviews
Search Air Canada flights

  • United Airlines Flights From Houston George Bush Intcntl Airport to Sydney

    Across 7 United Airlines flights from Houston George Bush Intcntl Airport to Sydney this week, the average price was $1,790, with the best United Airlines deals starting from $876 round-trip. 9,095 users have rated United Airlines on momondo, with an average score of 7.4/10.

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
Coogee
Manly
Penrith
Cronulla
Lithgow
Leura
Charlestown
Terrigal
Swansea

Why use momondo?

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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