Cheap flights from Houston to Sydney from $475

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 to Sydney departing on 5/15. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Houston to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:41 pm - 7:05 am
IAH
-
SYD
20h 24m
1 stop
American Airlines Logo
9:10 am - 7:11 pm
SYD
-
IAH
25h 01m
1 stop
$895American Airlines
Mon, May 4 - Wed, May 13
American Airlines Logo
7:41 pm - 7:05 am
IAH
-
SYD
20h 24m
1 stop
American Airlines Logo
9:10 am - 7:11 pm
SYD
-
IAH
25h 01m
1 stop
$896American Airlines
Tue, Apr 28 - Tue, May 12
American Airlines Logo
4:18 pm - 7:05 am
HOU
-
SYD
23h 47m
2 stops
American Airlines Logo
9:10 am - 3:49 pm
SYD
-
HOU
21h 39m
2 stops
$899American Airlines
Mon, May 4 - Wed, May 13
American Airlines Logo
6:09 pm - 7:05 am
IAH
-
SYD
21h 56m
2 stops
American Airlines Logo
9:10 am - 5:23 pm
SYD
-
IAH
23h 13m
2 stops
$899American Airlines
Mon, May 4 - Wed, May 13
American Airlines Logo
4:18 pm - 7:05 am
HOU
-
SYD
23h 47m
2 stops
American Airlines Logo
9:10 am - 3:48 pm
SYD
-
HOU
21h 38m
2 stops
$900American Airlines
Tue, Apr 21 - Tue, Apr 28
American Airlines Logo
7:41 pm - 7:05 am
IAH
-
SYD
20h 24m
1 stop
American Airlines Logo
9:10 am - 5:23 pm
SYD
-
IAH
23h 13m
2 stops
$900American Airlines
Tue, Apr 28 - Tue, May 12
Multiple Airlines Logo
7:41 pm - 7:05 am
IAH
-
SYD
20h 24m
1 stop
Multiple Airlines Logo
9:10 am - 7:11 pm
SYD
-
IAH
25h 01m
1 stop
$908Multiple Airlines
Sun, Apr 19 - Tue, May 5
Qantas Airways Logo
8:12 pm - 7:05 am
IAH
-
SYD
19h 53m
1 stop
Qantas Airways Logo
9:10 am - 7:42 pm
SYD
-
IAH
25h 32m
1 stop
$919Qantas Airways
Wed, Jun 10 - Wed, Jun 24
Qantas Airways Logo
7:41 pm - 7:30 am
IAH
-
SYD
20h 49m
1 stop
Qantas Airways Logo
9:10 am - 7:11 pm
SYD
-
IAH
25h 01m
1 stop
$920Qantas Airways
Tue, Apr 14 - Tue, Apr 21
Qantas Airways Logo
7:41 pm - 7:30 am
IAH
-
SYD
20h 49m
1 stop
Qantas Airways Logo
5:50 pm - 7:11 pm
SYD
-
IAH
40h 21m
1 stop
$931Qantas Airways
Mon, Apr 13 - Mon, Apr 20

Qantas Airways flights from Houston to Sydney

Our best Qantas Airways deals on Houston to Sydney flight tickets
Qantas Airways
Jun 10
IAH8:12 pmHouston George Bush Intcntl
19h 53m
1 stop
SYD7:05 amSydney Kingsford Smith
Jun 24
SYD9:10 amSydney Kingsford Smith
25h 32m
1 stop
IAH7:42 pmHouston George Bush Intcntl
$919
Qantas Airways
Apr 14
IAH7:41 pmHouston George Bush Intcntl
20h 49m
1 stop
SYD7:30 amSydney Kingsford Smith
Apr 21
SYD9:10 amSydney Kingsford Smith
25h 01m
1 stop
IAH7:11 pmHouston George Bush Intcntl
$920
Qantas Airways
Apr 13
IAH7:41 pmHouston George Bush Intcntl
20h 49m
1 stop
SYD7:30 amSydney Kingsford Smith
Apr 20
SYD5:50 pmSydney Kingsford Smith
40h 21m
1 stop
IAH7:11 pmHouston George Bush Intcntl
$931

Air New Zealand flights from Houston to Sydney

Our best Air New Zealand deals on Houston to Sydney flight tickets
Air New Zealand
Aug 26
IAH9:55 pmHouston George Bush Intcntl
19h 50m
1 stop
SYD8:45 amSydney Kingsford Smith
Aug 31
SYD9:55 amSydney Kingsford Smith
27h 50m
2 stops
IAH10:45 pmHouston George Bush Intcntl
$1,090
Air New Zealand
May 4
IAH6:05 pmHouston George Bush Intcntl
23h 40m
2 stops
SYD8:45 amSydney Kingsford Smith
May 18
SYD11:55 amSydney Kingsford Smith
19h 30m
1 stop
IAH4:25 pmHouston George Bush Intcntl
$1,116
Air New Zealand
Aug 31
IAH4:31 pmHouston George Bush Intcntl
25h 14m
2 stops
SYD8:45 amSydney Kingsford Smith
Sep 14
SYD9:55 amSydney Kingsford Smith
21h 30m
1 stop
IAH4:25 pmHouston George Bush Intcntl
$1,118

momondo Fare Finder

 
Customize your flight search to find flights from Houston 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 March 16, 2026.
Use the filters below to find and compare flights from Houston to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 5/4

7:41 pm-7:05 am

1 stop20h 24m

Sydney Kingsford Smith

Wed 5/13

9:10 am-7:11 pm

1 stop25h 01m

$895

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 4/28

7:41 pm-7:05 am

1 stop20h 24m

Sydney Kingsford Smith

Tue 5/12

9:10 am-7:11 pm

1 stop25h 01m

$896

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Mon 5/4

4:18 pm-7:05 am

2 stops23h 47m

Sydney Kingsford Smith

Wed 5/13

9:10 am-3:49 pm

2 stops21h 39m

$899

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 5/4

6:09 pm-7:05 am

2 stops21h 56m

Sydney Kingsford Smith

Wed 5/13

9:10 am-5:23 pm

2 stops23h 13m

$899

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Tue 4/21

4:18 pm-7:05 am

2 stops23h 47m

Sydney Kingsford Smith

Tue 4/28

9:10 am-3:48 pm

2 stops21h 38m

$900
Quickest round-trip

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 4/28

7:41 pm-7:05 am

1 stop20h 24m

Sydney Kingsford Smith

Tue 5/12

9:10 am-5:23 pm

2 stops23h 13m

$900

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 4/19

7:41 pm-7:05 am

1 stop20h 24m

Sydney Kingsford Smith

Tue 5/5

9:10 am-7:11 pm

1 stop25h 01m

$908

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 6/10

8:12 pm-7:05 am

1 stop19h 53m

Sydney Kingsford Smith

Wed 6/24

9:10 am-7:42 pm

1 stop25h 32m

$919

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 4/14

7:41 pm-7:30 am

1 stop20h 49m

Sydney Kingsford Smith

Tue 4/21

9:10 am-7:11 pm

1 stop25h 01m

$920

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 4/13

7:41 pm-7:30 am

1 stop20h 49m

Sydney Kingsford Smith

Mon 4/20

5:50 pm-7:11 pm

1 stop40h 21m

$931

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Sydney from

How to get the cheapest flight ticket from Houston 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 and Sydney?

What is the cheapest month to fly to Sydney?

In general, October is the cheapest month to fly from Houston to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,041. If you are unable to visit Sydney during the month of October, then departing from Houston during the month July is also very affordable. Most momondo users find prices during this month for around $1,065.

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

Fly from Houston George Bush Intcntl to Sydney Kingsford Smith for the best Houston - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,332 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Houston for as low as $988 on momondo.

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

There are 3 cabin classes available to choose from on Houston 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.

Cheap Houston to Sydney flight deals and tips

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

Fastest flight time

17h 30m

Direct flights

Wed and Sat

Airports in Sydney

1 airport
The fastest flight from Houston to Sydney takes 17h 30m
Direct flights go from Houston to Sydney on Wednesday and Saturday. There are no airlines offering direct flights.
There is 1 airport in Sydney. From Houston there are direct flights to Sydney Kingsford Smith (SYD).
  • How far is Houston to Sydney Kingsford Smith by plane?

    A flight from Houston to Sydney Kingsford Smith will travel around 8580.8 mi. By plane, this route typically takes 17h 30m.

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

    Prices for flights from Houston to Sydney Kingsford Smith Airport were last updated today.

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

  • How old do you have to be to fly from Houston 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 to Sydney Kingsford Smith Airport.

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

    The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Houston to Sydney

Compare and see reviews for airlines that fly from Houston to Sydney with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $203Free CancellationRating
7.9
8,292 reviews
Search Delta flights
Qantas AirwaysPriceFrom $447Free CancellationRating
7.5
1,004 reviews
Search Qantas Airways flights
Fiji AirwaysPriceFrom $702Free CancellationRating
8.1
232 reviews
Search Fiji Airways flights
American AirlinesPriceFrom $831Free CancellationRating
7.1
11,471 reviews
Search American Airlines flights
United AirlinesPriceFrom $839Free CancellationRating
7.4
9,429 reviews
Search United Airlines flights
Air CanadaPriceFrom $997Free CancellationRating
7.1
10,803 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,006Free CancellationRating
8.0
610 reviews
Search Air New Zealand flights

Traveling to a place near Sydney?

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

Why use momondo?

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

It is quick and easy to find Houston to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo allows you to filter the results for Houston to Sydney flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Houston.

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

Yes momondo offers price alerts on flights to Sydney from Houston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 4/15
Wed 4/22

Find better results for your trip to Australia