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$570+ Cheap flights from Houston to Sydney (SYD)

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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — SYD
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheapflights Tip: The best prices from Houston to Sydney Kingsford Smith are usually found in July or March, booked 54 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from Houston to Sydney

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 December 23, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:28 pmIAH - SYD
2 stops39h 57mMultiple Airlines
Tue 1/135:45 pmSYD - IAH
1 stop23h 34mMultiple Airlines
Deal found 12/22$1,288
This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:55 amIAH - SYD
2 stops28h 30mMultiple Airlines
Tue 1/135:45 pmSYD - IAH
1 stop23h 34mMultiple Airlines
Deal found 12/22$1,365
This American Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:30 pmIAH - SYD
1 stop20h 30mAmerican Airlines
Mon 1/1211:20 amSYD - IAH
1 stop19h 20mAmerican Airlines
Deal found 12/21$1,402
This American Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:09 pmIAH - SYD
2 stops24h 16mAmerican Airlines
Mon 1/1211:20 amSYD - IAH
1 stop19h 20mAmerican Airlines
Deal found 12/21$1,407
This American Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:30 pmIAH - SYD
1 stop20h 30mAmerican Airlines
Tue 1/611:20 amSYD - IAH
1 stop19h 20mAmerican Airlines
Deal found 12/22$1,588
This American Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:15 pmIAH - SYD
2 stops24h 55mAmerican Airlines
Tue 1/611:20 amSYD - IAH
1 stop19h 20mAmerican Airlines
Deal found 12/22$1,589
This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:59 pmIAH - SYD
1 stop42h 26mMultiple Airlines
Tue 1/136:25 pmSYD - IAH
2 stops43h 25mMultiple Airlines
Deal found 12/22$1,597
This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:59 pmIAH - SYD
1 stop41h 26mMultiple Airlines
Mon 1/127:00 amSYD - IAH
2 stops29h 18mMultiple Airlines
Deal found 12/22$1,611
This Delta deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:46 amHOU - SYD
2 stops27h 04mDelta
Tue 1/1310:40 amSYD - HOU
2 stops22h 30mDelta
Deal found 12/22$1,767
This Delta deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:40 pmHOU - SYD
2 stops44h 50mDelta
Mon 1/122:15 pmSYD - HOU
2 stops25h 18mDelta
Deal found 12/22$1,790
This Delta deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:46 amHOU - SYD
2 stops28h 44mDelta
Fri 1/910:40 amSYD - HOU
2 stops28h 53mDelta
Deal found 12/22$2,043
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:46 amHOU - SYD
2 stops28h 44mDelta
Tue 1/62:15 pmSYD - HOU
2 stops37h 06mDelta
Deal found 12/21$2,117

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 December 23, 2025.

Round-trip from

$858
(Trip.com)

One-way from

$570
(Kiwi.com)

Popular in

January

Cheapest in

July

Average price

$1,373
From Houston to Sydney Kingsford Smith
Search Deals
One-way flight from Houston to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($236 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 23, 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

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Sun 4/5

7:42 pm-7:30 am

1 stop20h 48m

Sydney Kingsford Smith

Sun 4/12

9:10 am-7:16 pm

1 stop25h 06m

$1,108

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Sat 2/28

4:20 pm-6:55 am

1 stop21h 35m

Sydney Kingsford Smith

Thu 3/19

5:45 pm-11:58 pm

2 stops22h 13m

$1,281

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Mon 6/8

6:05 pm-8:45 am

2 stops23h 40m

Sydney Kingsford Smith

Mon 7/6

10:20 am-1:11 am

1 stop29h 51m

$1,304

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Mon 5/4

2:32 pm-6:55 am

1 stop25h 23m

Sydney Kingsford Smith

Wed 5/13

5:50 pm-11:41 pm

2 stops20h 51m

$1,358

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Mon 5/4

6:31 pm-8:10 pm

2 stops34h 39m

Sydney Kingsford Smith

Wed 5/13

7:40 am-9:51 pm

2 stops29h 11m

$1,410

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Sat 5/2

6:31 pm-6:55 am

1 stop21h 24m

Sydney Kingsford Smith

Sat 5/16

5:50 pm-11:41 pm

2 stops20h 51m

$1,431

HoustonSydney

HOU - SYD

HOUSYD

Houston Hobby

Tue 3/10

4:20 pm-6:55 am

1 stop22h 35m

Sydney Kingsford Smith

Tue 3/24

1:05 pm-7:50 pm

1 stop22h 45m

$1,447

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 2/18

8:25 pm-7:00 am

Nonstop17h 35m

Sydney Kingsford Smith

Mon 3/9

11:50 am-11:25 am

Nonstop15h 35m

$1,448

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Wed 3/11

4:25 pm-6:20 am

1 stop21h 55m

Sydney Kingsford Smith

Tue 3/24

11:50 am-11:25 am

Nonstop15h 35m

$1,452

HoustonSydney

IAH - SYD

IAHSYD

Houston George Bush Intcntl

Tue 3/10

4:32 pm-9:05 am

1 stop24h 33m

Sydney Kingsford Smith

Tue 3/24

11:50 am-11:25 am

Nonstop15h 35m

$1,452

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 34 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 round-trip 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 round-trip flight from Houston to Sydney. Price data was last updated on December 19, 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, December is the cheapest month in which you can book a flight from Houston to Sydney (average of $447). Flying from Houston to Sydney in January is currently the most expensive (average of $847). 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 December 23, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 30% on flights from Houston to Sydney by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Houston to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Houston to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Houston to Sydney flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Houston to Sydney flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston to Sydney trip
Airports
IAH

Check the IAH Depart tab for current security checkpoint wait times to ensure a smooth departure experience.

Read more about IAHBy Evie Carrick
SYD

Use the T8 Airport Line for a quick train ride to Sydney's central business district in 15-25 minutes.

Read more about SYDBy John Walton
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
John Walton

John Walton

Expert on SYD

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more

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 December 23, 2025.
Read reviews from past customers who have flown Air New Zealand, Delta, and Qantas Airways from Houston to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very good
556 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.2

Food

7.4

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Air New Zealand
8.0
Very good
556 reviews
Air New Zealand
8.0
Very good
556 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.2

Food

7.4

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Delta
7.9
Good
8,013 reviews
Air New Zealand
8.0
Very good
556 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.2

Food

7.4

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Qantas Airways
7.5
Good
949 reviews
Air New Zealand
8.0
Very good
556 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.2

Food

7.4

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
United Airlines
7.4
Good
9,106 reviews
Air New Zealand
8.0
Very good
556 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.2

Food

7.4

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
American Airlines
7.2
Good
11,054 reviews
Air New Zealand
8.0
Very good
556 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.2

Food

7.4

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

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?

    Located just 4.6 mi from the city center, Sydney Kingsford Smith is the airport most travelers will use when flying to Sydney from Houston. Booking flights from Houston to Kingsford Smith (SYD) should be relatively easy as there are 0 daily inbound flights from Houston from 7 different airlines.

  • How long is the flight from Houston to Sydney?

    Departing from Houston to Sydney will take you 17h 35m. The distance from Houston to Sydney is about 8591 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Houston to Sydney round-trip?

    Currently priced at $337, Delta will fly you from Houston to Sydney and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Qantas Airways and American Airlines - these airlines can fly you to your destination from $785 and $823, respectively. Delta is 69% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is Qantas Airways, with whom users have recently found tickets for as low as $396. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Houston to Sydney for a low price.

  • 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 vacation 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, December is the cheapest month in which you can book a flight from Houston to Sydney (average of $447). Flying from Houston to Sydney in January is currently the most expensive (average of $847). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Houston to Sydney

Discover the top 7 airlines 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 2,558,603 searches. Data last updated December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$337Average$947FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$799Average$900FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$852FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$839Average$1,707FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$957Average$1,339FlexibilityNo cancel feeOn-time78%
Fiji AirwaysCheapest$971Average$1,162FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$998Average$1,242FlexibilityNo cancel feeOn-time67%

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