$386 Cheap Flights from Udon Thani (UTH) to Sydney (SYD)

View $386 flight on Thu, Nov 27, 2025Opens in a new window

Popular airlines from Udon Thani (UTH-Udon Thani Intl.) to Sydney Airport (SYD)

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Cheap Flights from Udon Thani to Sydney (UTH-SYD)

Prices were available within the past 7 days and start at $386 for one-way flights and $1,884 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thai Lion Mantari
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$1,884 Roundtrip, found 4 days ago
$1,884
Roundtrip
found 4 days ago
Select Thai Lion Mantari flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $1,884 found 4 days ago
Thai Lion Mantari
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$1,886 Roundtrip, found 4 days ago
$1,886
Roundtrip
found 4 days ago
Select Thai Lion Mantari flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $1,886 found 4 days ago
Thai Lion Mantari
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$1,927 Roundtrip, found 4 days ago
$1,927
Roundtrip
found 4 days ago
Select Thai Lion Mantari flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $1,927 found 4 days ago
Thai Lion Mantari
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$1,929 Roundtrip, found 4 days ago
$1,929
Roundtrip
found 4 days ago
Select Thai Lion Mantari flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $1,929 found 4 days ago
Turkish Airlines
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$3,198 Roundtrip, found 4 days ago
$3,198
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $3,198 found 4 days ago
Turkish Airlines
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$3,200 Roundtrip, found 4 days ago
$3,200
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $3,200 found 4 days ago
Turkish Airlines
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$3,654 Roundtrip, found 4 days ago
$3,654
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $3,654 found 4 days ago
Turkish Airlines
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$3,656 Roundtrip, found 4 days ago
$3,656
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $3,656 found 4 days ago
Turkish Airlines
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$3,722 Roundtrip, found 4 days ago
$3,722
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $3,722 found 4 days ago
Turkish Airlines
Thu, Nov 27 - Mon, Dec 15
UTH
Udon Thani
SYD
Sydney
$3,724 Roundtrip, found 4 days ago
$3,724
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Thu, Nov 27 from Udon Thani to Sydney, returning Mon, Dec 15, priced at $3,724 found 4 days ago

Frequently asked questions

How much does a flight from Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD) cost?
Snag a cheap one-way flight from $386 or cheap return flight from $1,884 from Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD) 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 Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD)?
Flying in November can help you save, as it's the cheapest month for flights between UTH and SYD. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD)?
To find the cheapest airline flying from UTH to SYD, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD)?
There are no daily nonstop flights departing from Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from UTH to SYD?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD)?
To avoid possible delays on the Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD) route, aim to fly before 3 PM. Later flights have a 22% higher chance of cancellation.**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 Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD) last-minute?
Holding off until just before your departure to book a flight from UTH to SYD generally means paying more. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary to boost your chances of snagging a bargain.
Is it cheaper to book an UTH to SYD flight and hotel package?
Booking an UTH to SYD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our extensive range of accommodations and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Udon Thani Intl. Airport (UTH) to Kingsford Smith Intl. Airport (SYD)?
Typically, you can reschedule or cancel your UTH to SYD flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want more information, go to our Customer Service portal.

Travel information

Origin airport
Udon Thani Intl.
Destination airport
Kingsford Smith Intl.
Roundtrip price
$1,884
Distance
4764 mi

Book with confidence

Udon Thani to Sydney Flights

The cheapest times to fly from Udon Thani to Sydney

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 Udon Thani to Sydney are during the month of November. You can find some of the cheapest flights from Udon Thani to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Udon Thani to Sydney

Sunday is one of the best days to book for cheap flights from Udon Thani to Sydney: 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 Udon Thani to Sydney

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 Udon Thani to Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $386 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 Udon Thani to Sydney 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 Udon Thani to Sydney 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.

 

Udon Thani to Sydney Flights

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*Available to One Key members.