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Cheap flights from Houston to Sydney from $643

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — SYD
4 Mar — 11 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Houston to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Houston to Sydney
Explore the most affordable flight options available from Houston to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 February 2026.

Wed 4/316:34
IAH
-
SYD
2 stops36h 31m
Multiple Airlines
Wed 11/314:00
SYD
-
IAH
2 stops26h 30m
Multiple Airlines
Deal found 2/2$1,384
Tue 28/409:33
IAH
-
SYD
1 stop30h 57m
Multiple Airlines
Mon 11/513:15
SYD
-
IAH
2 stops43h 47m
Multiple Airlines
Deal found 2/2$1,388
Sat 14/316:04
IAH
-
SYD
2 stops28h 31m
Multiple Airlines
Fri 20/306:00
SYD
-
IAH
2 stops33h 54m
Multiple Airlines
Deal found 31/1$1,407
Mon 23/216:34
IAH
-
SYD
2 stops27h 01m
Multiple Airlines
Mon 9/314:00
SYD
-
IAH
2 stops26h 30m
Multiple Airlines
Deal found 30/1$1,414
Tue 28/409:33
IAH
-
SYD
1 stop30h 57m
Multiple Airlines
Tue 12/513:15
SYD
-
IAH
2 stops26h 42m
Multiple Airlines
Deal found 2/2$1,420
Thu 19/316:04
IAH
-
SYD
2 stops28h 31m
Multiple Airlines
Thu 26/314:00
SYD
-
IAH
2 stops25h 54m
Multiple Airlines
Deal found 2/2$1,422
Fri 10/416:04
IAH
-
SYD
1 stop24h 26m
Multiple Airlines
Sat 18/413:15
SYD
-
IAH
2 stops26h 42m
Multiple Airlines
Deal found 31/1$1,436
Thu 5/316:34
IAH
-
SYD
1 stop21h 51m
Multiple Airlines
Tue 10/314:00
SYD
-
IAH
2 stops26h 30m
Multiple Airlines
Deal found 2/2$1,446
Tue 24/216:34
IAH
-
SYD
1 stop21h 51m
Multiple Airlines
Wed 4/314:00
SYD
-
IAH
2 stops27h 30m
Multiple Airlines
Deal found 1/2$1,448
Thu 30/416:49
IAH
-
SYD
1 stop23h 41m
Multiple Airlines
Wed 6/513:10
SYD
-
IAH
2 stops26h 47m
Multiple Airlines
Deal found 2/2$1,452
Tue 28/409:33
IAH
-
SYD
1 stop30h 57m
Multiple Airlines
Sun 10/513:15
SYD
-
IAH
2 stops43h 47m
Multiple Airlines
Deal found 2/2$1,458
Tue 24/216:34
IAH
-
SYD
1 stop21h 51m
Multiple Airlines
Fri 6/314:00
SYD
-
IAH
2 stops27h 30m
Multiple Airlines
Deal found 1/2$1,463

Find flight deals from Houston to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 2 February 2026.

Round-trip from

$1,363

One-way from

$643

Popular in

January

Cheapest in

July

Average price

$1,768
5/5-19/5
  • 5/5-19/5
  • 3 total stops
  • 57h 39m total
  • Houston to Sydney
Search Deals
18/3
  • 18/3
  • 2 total stops
  • 26h 33m total
  • Houston to Sydney
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($420 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($61 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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, Cheapflights users made 647,157 searches. Data last updated 2 February 2026.
Use the filters below to find and compare flights from Houston to Sydney that are best for you.

Fly from

Houston

Fly to

Sydney

Route

Depart

Return

Price

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 6/3

16:34-12:35

2 stops27h 01m

Sydney Kingsford Smith

Mon 16/3

14:00-05:52

3 stops31h 52m

$1,636

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 24/4

09:33-11:45

2 stops35h 12m

Sydney Kingsford Smith

Sat 9/5

17:50-00:57

1 stop22h 07m

$1,796

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

$1,863

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 6/4

11:50-07:20

3 stops52h 30m

Sydney Kingsford Smith

Fri 10/4

09:20-13:34

2 stops43h 14m

$1,925

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 24/2

12:10-09:35

3 stops52h 25m

Sydney Kingsford Smith

Wed 11/3

10:20-13:34

2 stops43h 14m

$1,955

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 29/4

18:18-18:50

2 stops33h 32m

Sydney Kingsford Smith

Sun 10/5

20:45-17:18

2 stops35h 33m

$2,042

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 22/2

07:20-06:20

1 stop30h 00m

Sydney Kingsford Smith

Sun 8/3

11:50-10:25

Nonstop15h 35m

$2,085

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Tue 21/4

16:19-07:05

2 stops23h 46m

Sydney Kingsford Smith

Tue 5/5

09:10-15:49

2 stops21h 39m

$2,095

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 10/3

21:30-07:00

Nonstop17h 30m

Sydney Kingsford Smith

Tue 24/3

11:50-11:25

Nonstop15h 35m

$2,095

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 24/2

20:25-07:00

Nonstop17h 35m

Sydney Kingsford Smith

Wed 11/3

11:50-11:25

Nonstop15h 35m

$2,095

Flights are sorted by cheapest return flights first.

Deals found on 31/1

Showing 1-10 of 38 results
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Best time to book a flight from Houston to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Houston with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston to Sydney

How far ahead should I book a flight from Houston to Sydney?

Use this chart to determine the optimal time to book a return flight from Houston to Sydney. Price data was last updated on 30 January 2026.

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Houston to Sydney?

Currently, May is the cheapest month in which you can book a flight from Houston to Sydney (average of $596). Flying from Houston to Sydney in January is currently the most expensive (average of $1,217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HOU to SYD?

Find hourly flight availability from Houston to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 February 2026.

When flying from Houston to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Houston to Sydney?

Related info for your journey

Find useful and relevant information for your journey from Houston to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Houston?

    For a flight from Houston to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre vof the city. Kingsford Smith is the only Sydney airport and it handles 0 inbound flights from Houston per day. 0 airlines have flights to Sydney Kingsford Smith from Houston on a regular basis.

  • How long is the flight from Houston to Sydney?

    Departing from Houston to Sydney will take you 23h 10m. Houston and Sydney are separated by a distance of 13826 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Houston to Sydney that include hotel bookings?

    Yes. In addition to deals on Houston to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Houston to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Houston to Sydney.

  • Can I find deals for business class flights from Houston to Sydney?

    Yes. Cheapflights offers flight deals from Houston to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston to Sydney?

    Currently, May is the cheapest month in which you can book a flight from Houston to Sydney (average of $596). Flying from Houston to Sydney in January is currently the most expensive (average of $1,217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

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How does Cheapflights help users find flights from Houston to Sydney?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Houston to Sydney. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Houston to Sydney?

Cheapflights helps you find that perfect flight to Sydney from Houston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Houston to Sydney with no change fees?

Yes! Cheapflights helps users easily find flights from Houston to Sydney with no change fees.

Can Cheapflights notify me if prices for flights from Houston to Sydney become cheaper?

Yes! Start tracking prices for Houston to Sydney flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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