$733 Find Cheap Flights from Houston to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Houston to Sydney departing on 23/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Sydney, as well as popular online travel agencies
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Cheap Flights from Houston to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Houston to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Houston to Sydney

Mon, 22 Sep - Sun, 5 Oct
ANA Logo
11:35 - 09:25IAH-SYD
30h 50m1 stop
ANA Logo
12:50 - 05:17SYD-IAH
32h 27m2 stops
$1,448ANA
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Sun, 21 Sep - Sun, 5 Oct
American Airlines Logo
20:12 - 07:05IAH-SYD
19h 53m1 stop
American Airlines Logo
10:10 - 19:38SYD-IAH
25h 28m1 stop
$1,456American Airlines
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Mon, 24 Nov - Sun, 7 Dec
ANA Logo
19:50 - 20:15IAH-SYD
31h 25m2 stops
ANA Logo
21:45 - 07:45SYD-IAH
27h 00m1 stop
$1,470ANA
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Sun, 21 Sep - Sun, 5 Oct
American Airlines Logo
20:12 - 07:05IAH-SYD
19h 53m1 stop
American Airlines Logo
10:10 - 19:38SYD-IAH
25h 28m1 stop
$1,477American Airlines
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Sun, 21 Sep - Sun, 5 Oct
Air Canada Logo
16:55 - 07:20IAH-SYD
23h 25m1 stop
Air Canada Logo
10:20 - 15:42SYD-IAH
21h 22m1 stop
$1,490Air Canada
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Sun, 21 Sep - Sun, 5 Oct
Air Canada Logo
10:00 - 07:20IAH-SYD
30h 20m2 stops
Air Canada Logo
10:20 - 22:14SYD-IAH
27h 54m2 stops
$1,499Air Canada
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Wed, 10 Sep - Wed, 24 Sep
 Logo
07:10 - 08:45IAH-SYD
34h 35m2 stops
 Logo
11:50 - 22:26SYD-IAH
25h 36m2 stops
$1,533
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Mon, 27 Oct - Sun, 9 Nov
Air New Zealand Logo
21:05 - 10:30IAH-SYD
21h 25m1 stop
Air New Zealand Logo
09:55 - 14:05SYD-IAH
21h 10m1 stop
$1,546Air New Zealand
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Mon, 3 Nov - Sun, 16 Nov
Air New Zealand Logo
20:05 - 12:40IAH-SYD
23h 35m1 stop
Air New Zealand Logo
09:55 - 14:05SYD-IAH
21h 10m1 stop
$1,547Air New Zealand
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Tue, 16 Sep - Tue, 30 Sep
 Logo
06:39 - 11:45IAH-SYD
38h 06m2 stops
 Logo
13:15 - 04:30SYD-IAH
30h 15m2 stops
$1,552
Find Deal
Booking Insights

KAYAK's insights & trends for Houston to Sydney flights

Get data-powered insights and trends into flights from Houston to Sydney to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Houston to Sydney flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Houston to Sydney.

Our data shows that the cheapest route for a return flight from Houston to Sydney cost $3,246 and was between Houston George Bush Intcntl Airport (IAH) and Sydney (SYD). On average, the best prices are found if you fly this route. The average price for a return flight for this route is $3,246.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston to Sydney is March, where tickets cost $1,400 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $2,815 and $1,968 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston to Sydney, you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.


Good to know

Cheapest flight$733
Flight from Houston George Bush Airport to Sydney

When to book flights from Houston to Sydney

Are your dates flexible? Find out the best times to travel from Houston to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Houston to Sydney

  • What is the cheapest flight from Houston to Sydney?

    In the last 3 days, the lowest price for a flight from Houston to Sydney was $472 for a one-way ticket and $933 for a return.

  • Which airports will I be using when flying from Houston to Sydney?

    On your way to Sydney, you’ll fly out from one of these Houston airports: Houston Hobby or Houston George Bush Intcntl. You’ll be landing at Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Houston to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Houston to Sydney?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Houston and Sydney, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Houston to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Houston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Houston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Houston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Houston to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Houston to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Houston to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Qantas AirwaysOverall score based on 887 reviews
7.4Comfort
7.7Boarding
6.9Food
8.2Crew
7.2Entertainment
Airline reviews

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

8.0 ExcellentMarcus, July 2025SYD - ADL
Read more Qantas Airways reviews

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

Airline running better than post Covid, proper boarding process now implemented, some aircraft feeling a bit old and tired, crew fine, online experience better.

Five hour flight instead of four hours due to westerly headwinds which wasn’t the fault of Qantas !

The wifi was out. Otherwise it was great flight. Richard, as CSM, was excellent.

Was bumped to a later flight because of inefficiency on part of the airline.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

Loved the staff. The economy seats could have been bigger.

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

Overall it was good. I missed my connection but I was put on another flight.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

My suitcase was completed destroyed. The top part is broken and unusable now.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

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

Information on your arrival and departure airports

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