International route
Cheap flights from Houston to Sydney
George Bush Intercontinental Airport (IAH) to Sydney Kingsford Smith Airport (SYD). 8,598 miles, 17h 45m nonstop.
IAH to SYD at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 8,598 milesgreat-circle
- Typical flight time
- 17h 45mnonstop, gate to gate
- Nonstop airlines
- UAQF2 airlinesUnited, Qantas
- Nonstop flights per day
- 2all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Wednesday20% less than Friday
- Time difference
- 15h aheadSydney vs Houston
Houston to Sydney
Round trips from $527
Per traveler, taxes and fees included. Lowest fare we found departs Wed, Jan 6.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppHouston to Sydney fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Houston to Sydney
2 airlines fly nonstop with 2 departures a day combined, plus 16 more with one stop.
- QFQantasoneworldNonstop · 1 flight a day · first checked bag included
- UAUnited AirlinesStar AllianceNonstop · 1 flight a day · first checked bag from $40
- AMAeroméxicoSkyTeamConnecting via MEX, MTY, GDL · first checked bag from $40
- ACAir CanadaStar AllianceConnecting via YVR, YYC · first checked bag from $35
- NZAir New ZealandStar AllianceConnecting via AKL · first checked bag included
- ASAlaska AirlinesoneworldConnecting via PDX, ANC, SFO, SAN · first checked bag from $35
- AAAmerican AirlinesoneworldConnecting via DFW, PHX · first checked bag from $40
- AVAviancaStar AllianceConnecting via MDE, SAL · first checked bag from $45
- CIChina AirlinesSkyTeamConnecting via TPE · first checked bag included
- CMCopa AirlinesStar AllianceConnecting via PTY · first checked bag from $40
- DLDelta Air LinesSkyTeamConnecting via SEA · first checked bag from $35
- BREVA AirStar AllianceConnecting via TPE · first checked bag included
- FJFiji AirwaysoneworldConnecting via NAN · first checked bag included
- JLJapan AirlinesoneworldConnecting via HND · first checked bag included
- LALATAM AirlinesConnecting via LIM · first checked bag from $45
- VBVivaLow-costConnecting via MTY, GDL · first checked bag from $45
- Y4VolarisLow-costConnecting via CUN · first checked bag from $45
- WSWestJetConnecting via YVR · first checked bag from $35
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Vancouver (YVR)ACWS2 airlines
- Monterrey (MTY)AMVB2 airlines
- Guadalajara (GDL)AMVB2 airlines
- Taipei (TPE)BRCI2 airlines
- Dallas (DFW)AA1 airline
Which airport should I use?
Houston has 2 airports. Fares can differ by $50 to $150 round trip between them, so check the alternatives before you book.
Other departure airports near Houston
Tips for this route
- Only United and Qantas fly this route nonstop, which keeps nonstop fares firm. A one-stop itinerary through YVR or MTY is usually cheaper if you can spare the extra three to five hours.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $527; September 2026 is the most expensive at $707 and up, a difference of $180 per traveler.
- Departing on a Wednesday averages 20% less than a Friday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
- Sydney is 15 hours ahead of Houston. Expect to lose 15 hours on the clock heading east, so an overnight or late-afternoon departure tends to arrive at a more usable hour.
Destination guide
Sydney: Harbor, surf beaches and 14 hours from LA
Sydney is the far end of the map for US travelers, but nonstops from Los Angeles, San Francisco, Dallas, Houston and New York make it a single long flight. The harbor, the Opera House, Bondi to Coogee and the Blue Mountains reward the journey.
Best time to visit: October–November and March–April (Southern Hemisphere spring and fall) are warm and less crowded. December–February is summer — beach season, school holidays and peak fares. June–August is mild and cheap.
Flying the other way? Sydney to HoustonFares, airlines and tips for SYD to IAH.Ready to compare live fares?
See every airline on IAH–SYD side by side with bags and seat rules spelled out.
Search Houston to SydneyHouston to Sydney: common questions
How long is the flight from Houston to Sydney?
A nonstop flight from Houston (IAH) to Sydney (SYD) takes about 17h 45m gate to gate, covering 8,598 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.
Which airlines fly nonstop from IAH to SYD?
United Airlines and Qantas operate nonstop flights from Houston (IAH) to Sydney (SYD), with 2 nonstop departures a day between them. One-stop options connect through YVR, MTY and GDL.
What is the cheapest month to fly from Houston to Sydney?
Over the next six months, January 2027 has the lowest round-trip fares from Houston (IAH) to Sydney (SYD), starting at $527 per traveler including taxes and fees. Within any month, Wednesday departures average the lowest prices.
How far in advance should I book Houston to Sydney flights?
Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Houston and Sydney?
Sydney is 15 hours ahead of Houston. IAH is on America/Chicago time and SYD on Australia/Sydney time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
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