SYD

$448 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 3/4. 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, 0 bags

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Sydney.
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Everything you should know

Cheapest round-trip
$933
Overall average: $1,120
Multiple Airlines
Wed 2/25Wed 3/4
IAH - SYD • 2 stops
Cheapest non-stop
$1,452
United Airlines
Sun 2/8Mon 2/16
IAH - SYD • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
IAH offers free Wi-Fi across all terminals.
Take the Airport Link train for quick access to Sydney.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
American Airlines
Cheapest • from $1,452 (round-trip)
Air New Zealand
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
IAH
-
SYD
Cheapest
IAH
-
SYD
Most popular
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
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Flight Deals

Cheap Flights from Houston to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from Houston to Sydney

Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
4:34 pm - 10:05 pm
IAH
-
SYD
36h 31m
2 stops
Multiple Airlines Logo
6:00 am - 12:30 am
SYD
-
IAH
35h 30m
2 stops
$933Multiple Airlines
Tue, Feb 10 - Tue, Feb 17
Multiple Airlines Logo
4:08 pm - 10:05 pm
IAH
-
SYD
36h 57m
2 stops
Multiple Airlines Logo
6:00 am - 12:30 am
SYD
-
IAH
35h 30m
2 stops
$935Multiple Airlines
Sat, Mar 28 - Sun, Apr 12
Multiple Airlines Logo
4:22 pm - 12:45 pm
IAH
-
SYD
28h 23m
2 stops
Multiple Airlines Logo
6:00 am - 12:11 am
SYD
-
IAH
33h 11m
2 stops
$942Multiple Airlines
Sun, Feb 8 - Sun, Feb 22
Multiple Airlines Logo
4:08 pm - 12:35 pm
IAH
-
SYD
27h 27m
2 stops
Multiple Airlines Logo
2:00 pm - 12:30 am
SYD
-
IAH
27h 30m
2 stops
$971Multiple Airlines
Sun, Mar 22 - Sun, Apr 5
American Airlines Logo
4:20 pm - 6:55 am
HOU
-
SYD
22h 35m
1 stop
American Airlines Logo
12:00 pm - 3:50 pm
SYD
-
HOU
18h 50m
1 stop
$1,452American Airlines
Tue, Jun 23 - Wed, Jul 1
American Airlines Logo
4:15 pm - 6:55 am
HOU
-
SYD
23h 40m
1 stop
American Airlines Logo
12:00 pm - 7:52 pm
SYD
-
HOU
22h 52m
1 stop
$1,453American Airlines
Tue, Apr 21 - Tue, May 5
American Airlines Logo
4:19 pm - 7:05 am
HOU
-
SYD
23h 46m
2 stops
American Airlines Logo
9:10 am - 3:49 pm
SYD
-
HOU
21h 39m
2 stops
$1,455American Airlines
Mon, May 4 - Wed, May 13
American Airlines Logo
8:21 pm - 6:55 am
HOU
-
SYD
19h 34m
1 stop
American Airlines Logo
9:10 am - 3:49 pm
SYD
-
HOU
21h 39m
2 stops
$1,456American Airlines
Tue, Mar 10 - Tue, Mar 24
Delta Logo
2:13 pm - 7:30 am
HOU
-
SYD
25h 17m
2 stops
Delta Logo
1:15 pm - 10:42 pm
SYD
-
HOU
25h 27m
2 stops
$1,471Delta
Tue, Feb 24 - Wed, Mar 11
Delta Logo
5:25 am - 6:50 am
HOU
-
SYD
32h 25m
2 stops
Delta Logo
9:40 am - 10:42 pm
SYD
-
HOU
29h 02m
2 stops
$1,473Delta
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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Houston to Sydney costs $1,451 on the route between Houston George Bush Intcntl Airport (IAH) and Sydney (SYD). It is also the most popular route.

What’s the cheapest day of the week to fly from Houston to Sydney?

The average price of all round-trip flights from Houston to Sydney clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Sydney on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Houston to Sydney. For your return ticket, we recommend flying on a Monday and avoiding Fridays for the best deals.

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 July, where tickets cost $853 (return) on average. On the other hand, the most expensive months are January and May, where the average cost of round-trip tickets is $1,473 and $1,461 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 2 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Expert advice

Expert advice for your flight from Houston to Sydney

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
John Walton

John Walton

Expert on IAH

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.

Robert Schrader

Robert Schrader

Expert on SYD

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Good to know

Cheapest flight$448
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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $448 for a one-way ticket and $933 for a round-trip.

  • Do I need a passport to fly between Houston and Sydney?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Houston and on arrival in Sydney.

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

    Houston has 2 major airports: Houston Hobby and Houston George Bush Intcntl. Sydney Kingsford Smith is the only airport in Sydney. You’ll usually find the cheapest deals if you fly from Houston George Bush Airport.

  • 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?

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

  • What is the most popular layover when flying to Sydney from Houston?

    Los Angeles is the most popular layover city among KAYAK users traveling from Houston to Sydney.

  • 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 round-trip 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.

Prefer to fly direct from Houston to Sydney?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston to Sydney Kingsford Smith.
Find which airlines fly direct from Houston to Sydney Kingsford Smith Airport, which days they fly and book direct flights.

Direct departures

Houston to Sydney Kingsford Smith

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Sydney Kingsford Smith to Houston

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 5 airlines serving 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.
8.0
Air New ZealandOverall score based on 577 reviews
7.4Food
8.0Comfort
8.2Boarding
7.4Entertainment
8.5Crew
Airline reviews

Very quick flight so no time for refreshments. We took off. Then landed. The end. Seats were too tight. Very cramped Grateful for the short flight cos moving around wasn’t possible

6.0 GoodDavid, Jan 2026
IAH - LFT
Read more Air New Zealand reviews

Very quick flight so no time for refreshments. We took off. Then landed. The end. Seats were too tight. Very cramped Grateful for the short flight cos moving around wasn’t possible

Please add more Bollywood movies and recent movies to the entertainment.

The disembarking steps in Wellington were precarious and I felt quite insecure. There was no one on the tarmac to greet us and help. The embarking ramp in Blenheim was much more satisfactory. The rest of the flight was fine.

Entertainment screen froze and had to be reset. Noticed it happened to other passengers as well.

The food was not as good as Air New Zealand. The veg pasta was pass-able but the veg cibotta sandwich was dry, hard and not up to par. The coach staff were attentive and accommodating.

Air conditioning was turned to the wrong setting. Way too hot. The entertainment system kept resetting and didn’t work half the flight. Said something to the crew. They didn’t do anything to help. Plane had a mechanical problem that resulted in 2.5 hour delay. Boarded the plane, had to disembark and get back on.

Flight was delayed by 2 hours. Got lucky that i had a long connection, else would have certainly missed my connecting flight. Food is just okay, specially the breakfast is worse . Asked for water 30 mins before landing, the response is that we are landing so everything is packed . I guess traveling in economy that’s what we get. Probably business class passengers would get a different answer. Only good thing is that wifi service is available from auckland to lax for most part Next time will try united or American and then compare.

Good and appreciate the effort Air Zealand puts into using more environmentally friendly food containers and utensils. yay! One of the better airlines for this for sure. Still some bad stuff, but at least Air NZ is trying. :) Also really enjoyed the bluetooth option for personal headsets. :)

I was trying to get confirmation on if my luggage was going to be moved to the earlier flight (I requested standby to get home earlier) and was unable to get help from those working at the counter. The request to be moved to an earlier flight was handled smoothly through the app and appreciate the ease of the request.

Do the bumpy weather the whole trip they were very few times when the seatbelt sign wasn't on

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The flight was comfortable and uneventful, which is what I desire

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

Couldn't access entertainment on app as said in an email

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

After already paying for excess luggage prior to flight, i was advised AT check in that i had to pay $816 or forfeit my flight! The lady at the counter was SO rude and had already started offboarding me when i said i would pay it after asking her three times for the exact amount! Have lodged a formal complaint yet heard nothing. Will not ever travel via Qantas again

A few more inches of legroom is all i ask

One of the best Qantas business flights I've had. Quality product

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

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.

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

I like flying first class, and United has a nice one

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

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.

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

They made me pay $40 to check a bag that was listed as free when I bought my ticket. Then before boarding they offered to check any bags free.

The seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

The professionals have excellent customer service, the seats don´t have enough space.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

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

Information on your arrival and departure airports