The cheapest times to fly from IAH to SYD are

  • January 29th to April 1st
  • April 30th to June 24th
  • August 20th to September 9th
  • October 22nd to December 2nd

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAH to SYD is mid May. Prices can be as high as $2263 for Friday flights during mid December, or as low as $1098 for Tuesday flights around mid May.


When to Fly to Sydney

Flying from Houston, TX (IAH) to Sydney (SYD) will usually cost between $1149 to $1841 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid May with an average ticket price of $1166. Due to high demand the most expensive time to fly is mid December, with an average price of $2067. Planning your trip to low-cost times can easily save you $901 on economy flights and even more on first-class flights. Generally, any price below $1361 can be considered a good price for a round-trip IAH to SYD flight.

See below for a graph of average weekly prices for the IAH to SYD route. All prices are for round-trip tickets in USD.

IAH to SYD Flight Prices

Compared to other flights, the IAH to SYD flight is slightly more expensive than the average and costs slightly more than the average flight leaving from Houston. The average price per mile (for a direct flight) is $0.1, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to SYD, and Monday the cheapest day to fly back into IAH. Fridays are the most expensive days to fly to Sydney, and Tuesdays are the most expensive days to return to Houston. Selecting flights on the least expensive days could save you up to $108 (7%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1332. Return trip prices are from the SYD to IAH flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from IAH to SYD can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 16 hour 27 minutes may be realistic.


Flight Hacking IAH to SYD

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAH to SYD — but Champion Traveler does!

Hack #1: Singapore (IAH > SIN > SYD)

  • Price for both tickets: $1136
  • Average savings: $225 (16.53%)

See IAH to SIN flights

Hack #2: Bangkok (IAH > BKK > SYD)

  • Price for both tickets: $1158
  • Average savings: $204 (14.95%)

See IAH to BKK flights

Hack #3: Jakarta (IAH > CGK > SYD)

  • Price for both tickets: $1179
  • Average savings: $182 (13.37%)

See IAH to CGK flights


Flight Questions Answered

Still have questions about flying from IAH to SYD? We’ve got answers.

Which airlines fly this route?

You can find 25 major airlines flying this route most often: Air Canada, Air China, Air New Zealand, Air Tahiti Nui, Alaska, American, ANA, Asiana, Avianca, British Airways, Cathay Pacific, China Southern, Delta, Fiji Airways, Frontier, Hawaiian, Korean Air, LATAM, Qantas, Qatar Airways, Singapore Airlines, Southwest, United, Virgin Australia, WestJet, and potentially more during busy seasons.

How far away is it from Sydney International Airport to George Bush Intercontinental/Houston Airport?

The distance between the two airports is roughly 8595 miles or 13832 kilometers.

How long does it take to fly from IAH to SYD?

The real-world flight time for a nonstop IAH to SYD flight is about 16 hour 27 minutes.

How many flights go between Houston, TX and Sydney?

It depends on the day of the week and the date, but a typical day might have around 95 available flights from IAH to SYD.


Airport Location Info


Departing Airport

Origination code IAH
Origination airport name George Bush Intercontinental/Houston Airport
City Houston, TX
Country the United States
Latitude 30
Longitude -95.3

Return Airport

Destination code SYD
Destination airport name Sydney International Airport
City Sydney
Country Australia
Latitude -33.9
Longitude 151.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.