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Cheap flights from Houston to Sydney from $651

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 14/2. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — SYD
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Houston to Sydney Kingsford Smith are usually found in July or April, booked 54 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

Cheap 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 21 November 2025.

Round-trip from

$1,562

One-way from

$651

Popular in

January

Cheapest in

July

Average price

$1,629
12/2-24/2
  • 12/2-24/2
  • 3 total stops
  • 56h 31m total
  • Houston to Sydney
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14/2
  • 14/2
  • 2 total stops
  • 33h 44m total
  • Houston to Sydney
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($517 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($80 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find 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 21 November 2025.

Sat 6/1207:45IAH - SYD
1 stop30h 40mMultiple Airlines
Sun 14/1211:20SYD - IAH
1 stop25h 12mMultiple Airlines
Deal found 20/11$1,596
Thu 4/1207:45IAH - SYD
1 stop30h 40mMultiple Airlines
Thu 15/107:50SYD - IAH
3 stops34h 33mMultiple Airlines
Deal found 19/11$1,706
Sat 6/1207:45IAH - SYD
1 stop32h 15mMultiple Airlines
Wed 10/1217:45SYD - IAH
2 stops39h 53mMultiple Airlines
Deal found 20/11$1,724
Fri 5/1207:45IAH - SYD
1 stop30h 40mMultiple Airlines
Sat 20/1217:45SYD - IAH
1 stop19h 09mMultiple Airlines
Deal found 20/11$1,734
Mon 1/1218:05IAH - SYD
2 stops34h 45mMultiple Airlines
Tue 9/1214:00SYD - IAH
2 stops22h 32mMultiple Airlines
Deal found 19/11$1,873
Sun 23/1112:13IAH - SYD
2 stops27h 47mMultiple Airlines
Sun 7/1211:20SYD - IAH
1 stop24h 52mMultiple Airlines
Deal found 20/11$1,894
Wed 31/1205:46IAH - SYD
3 stops34h 49mMultiple Airlines
Mon 19/107:05SYD - IAH
3 stops35h 18mMultiple Airlines
Deal found 20/11$1,967
Sat 29/1120:20HOU - SYD
2 stops31h 30mMultiple Airlines
Mon 8/1222:20SYD - HOU
2 stops38h 58mMultiple Airlines
Deal found 19/11$2,253
Fri 19/1210:13HOU - SYD
2 stops41h 37mMultiple Airlines
Fri 26/1208:45SYD - HOU
2 stops27h 59mMultiple Airlines
Deal found 19/11$2,329
Sat 29/1120:20HOU - SYD
2 stops41h 55mMultiple Airlines
Tue 9/1208:45SYD - HOU
2 stops44h 00mMultiple Airlines
Deal found 19/11$2,378
Wed 31/1206:00HOU - SYD
2 stops33h 30mDelta
Mon 19/114:15SYD - HOU
2 stops25h 18mDelta
Deal found 20/11$2,496
Sun 23/1110:40HOU - SYD
2 stops28h 50mDelta
Sun 7/1210:40SYD - HOU
2 stops24h 12mDelta
Deal found 20/11$2,727

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 21 November 2025.
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

HOU - SYD

HOUSYD

Houston Hobby

Wed 1/4

13:00-07:35

2 stops26h 35m

Sydney Kingsford Smith

Mon 20/4

09:25-21:38

2 stops27h 13m

$1,800

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Tue 10/3

10:05-06:05

2 stops28h 00m

Sydney Kingsford Smith

Tue 24/3

13:15-21:46

2 stops24h 31m

$1,800

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 1/4

16:00-07:35

1 stop23h 35m

Sydney Kingsford Smith

Mon 20/4

09:25-23:57

2 stops29h 32m

$1,800

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 1/2

20:25-07:00

Nonstop17h 35m

Sydney Kingsford Smith

Fri 20/2

11:50-10:25

Nonstop15h 35m

$1,848

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sat 2/5

21:35-07:00

1 stop42h 25m

Sydney Kingsford Smith

Sat 16/5

09:30-18:25

1 stop23h 55m

$1,885

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sat 28/2

16:40-09:15

2 stops23h 35m

Sydney Kingsford Smith

Thu 19/3

10:20-13:38

1 stop19h 18m

$1,955

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Fri 6/3

21:46-09:05

1 stop42h 19m

Sydney Kingsford Smith

Sat 21/3

11:50-11:25

Nonstop15h 35m

$1,956

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Wed 20/5

10:05-06:35

2 stops29h 30m

Sydney Kingsford Smith

Fri 29/5

09:25-21:38

2 stops27h 13m

$1,993

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Sat 24/1

05:45-06:50

2 stops32h 05m

Sydney Kingsford Smith

Sun 8/2

10:40-22:33

2 stops28h 53m

$1,993

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 2/3

20:25-07:00

Nonstop17h 35m

Sydney Kingsford Smith

Sat 14/3

12:10-00:56

1 stop28h 46m

$2,095

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 39 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 14 November 2025.

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, September is the cheapest month in which you can book a flight from Houston to Sydney (average of $816). Flying from Houston to Sydney in January is currently the most expensive (average of $1,309). 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 21 November 2025.

One of the essential ways to save on airfare from Houston to Sydney is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 35% on airfare.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 21 November 2025.
Get a feel of what it's like to fly with Qantas Airways from Houston to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
942 reviews
Check prices

Comfort

7.5

Entertainment

7.2

Food

7.0

Crew

8.2

Boarding

7.7

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
Qantas Airways
7.5
Good
942 reviews
Qantas Airways
7.5
Good
942 reviews
Check prices

Comfort

7.5

Entertainment

7.2

Food

7.0

Crew

8.2

Boarding

7.7

Overall

7.5

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

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. 1 airline has 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 17h 35m. 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.

  • What is the cheapest airline to fly from Houston to Sydney round-trip?

    Our cheapest airline available from Houston to Sydney is Qantas Airways. Our recent data shows that you can find tickets from as low as $713 on this airline. Qantas Airways is currently priced 57% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Houston to Sydney one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $1,397. Users have also found prices from $1,565 and $1,644 on Cathay Pacific and Delta, respectively.

  • 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, September is the cheapest month in which you can book a flight from Houston to Sydney (average of $816). Flying from Houston to Sydney in January is currently the most expensive (average of $1,309). 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
Katoomba
Penrith
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Houston to Sydney

Discover the top airline that operate flights from Houston to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 21 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$713Average$1,314FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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