$649 Cheap Flights from Houston (IAH) to Adelaide (ADL)

View $649 flight on Tue, Feb 3, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Adelaide, SA Airport (ADL)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Houston to Adelaide (IAH-ADL)

Prices were available within the past 7 days and start at $649 for one-way flights and $818 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Mar 9 - Fri, Mar 13
IAH
Houston
ADL
Adelaide
$818 Roundtrip, found 3 days ago
$818
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Mar 9 from Houston to Adelaide, returning Fri, Mar 13, priced at $818 found 3 days ago
Air Canada
Mon, Nov 17 - Mon, Feb 16
IAH
Houston
ADL
Adelaide
$820 Roundtrip, found 5 days ago
$820
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Nov 17 from Houston to Adelaide, returning Mon, Feb 16, priced at $820 found 5 days ago
Air Canada
Mon, Nov 17 - Mon, Feb 16
IAH
Houston
ADL
Adelaide
$821 Roundtrip, found 5 days ago
$821
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Nov 17 from Houston to Adelaide, returning Mon, Feb 16, priced at $821 found 5 days ago
Air Canada
Sun, Feb 1 - Sat, Feb 28
IAH
Houston
ADL
Adelaide
$822 Roundtrip, found 3 days ago
$822
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sun, Feb 1 from Houston to Adelaide, returning Sat, Feb 28, priced at $822 found 3 days ago
Air Canada
Mon, Feb 23 - Mon, Mar 23
IAH
Houston
ADL
Adelaide
$823 Roundtrip, found 5 days ago
$823
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Feb 23 from Houston to Adelaide, returning Mon, Mar 23, priced at $823 found 5 days ago
Air Canada
Mon, Mar 23 - Mon, Jun 22
IAH
Houston
ADL
Adelaide
$824 Roundtrip, found 5 days ago
$824
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Mar 23 from Houston to Adelaide, returning Mon, Jun 22, priced at $824 found 5 days ago
Air New Zealand
Mon, Dec 1 - Sun, Feb 1
IAH
Houston
ADL
Adelaide
$1,125 Roundtrip, found 1 day ago
$1,125
Roundtrip
found 1 day ago
Select Air New Zealand flight, departing Mon, Dec 1 from Houston to Adelaide, returning Sun, Feb 1, priced at $1,125 found 1 day ago
United
Fri, Feb 6 - Sat, Feb 28
IAH
Houston
ADL
Adelaide
$1,222 Roundtrip, found 3 hours ago
$1,222
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Feb 6 from Houston to Adelaide, returning Sat, Feb 28, priced at $1,222 found 3 hours ago
Fiji Airways
Tue, Mar 17 - Sat, Apr 4
IAH
Houston
ADL
Adelaide
$1,368 Roundtrip, found 4 days ago
$1,368
Roundtrip
found 4 days ago
Select Fiji Airways flight, departing Tue, Mar 17 from Houston to Adelaide, returning Sat, Apr 4, priced at $1,368 found 4 days ago
Qantas Airways
Tue, Feb 10 - Tue, Mar 10
IAH
Houston
ADL
Adelaide
$1,498 Roundtrip, found 10 hours ago
$1,498
Roundtrip
found 10 hours ago
Select Qantas Airways flight, departing Tue, Feb 10 from Houston to Adelaide, returning Tue, Mar 10, priced at $1,498 found 10 hours ago

Alternative airports near Adelaide

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Adelaide, SA Airport ADL. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $1,487
ADL
Adelaide, SA Airport
CheapestClosest
Average driving time to city center11 min
Flights from $1,487

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL) cost?
Snag a cheap one-way flight from $649 or cheap return flight from $818 from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL)?
Planning your trip for March is a great way to save, as it's the cheapest month for flights between IAH and ADL. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest IAH to ADL flight.
How many flights per day from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL)?
There are no daily direct flights from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from IAH to ADL?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL)?
To land at Adelaide Airport (ADL) without delays, opt for a flight that leaves from George Bush Intercontinental Airport (IAH) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL) last-minute?
Holding off until just before your trip to book a ticket from IAH to ADL often results in higher prices. Although you may find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open to boost your chances of scoring a bargain.
Is it cheaper to book an IAH to ADL flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAH to ADL flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one convenient place will take the stress out of travel planning. Simply secure your flights and choose from our extensive range of stays, then customize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Adelaide Airport (ADL)?
In most instances, you can cancel or modify your IAH to ADL flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you'd like further information, go to our Customer Service portal.

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Adelaide
Airlines serving
Air Canada, Air New Zealand, All Nippon Airways, American Airlines, Cathay Pacific, Emirates, Lufthansa, Qantas Airways, Qatar Airways, United
Roundtrip price
$817
Distance
9314 mi

Book with confidence

Houston to Adelaide Flights

The cheapest times to fly from Houston to Adelaide

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Adelaide are during the month of March. You can find some of the cheapest flights from Houston to Adelaide with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Adelaide

Sunday is one of the best days to book for cheap flights from Houston to Adelaide: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Adelaide

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Adelaide in 2025. You can also book with separate airlines for your outbound and return journeys, from $649 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Adelaide flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Adelaide airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Houston to Adelaide Flights

Explore a world of travel with Expedia

*Available to One Key members.