$501 Cheap Flights from Sydney (SYD) to Udon Thani (UTH)

View $501 flight on Sat, Nov 8, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $501 for one-way flights and $973 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thai Airways International
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$973 Roundtrip, found 6 days ago
$973
Roundtrip
found 6 days ago
Select Thai Airways International flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $973 found 6 days ago
Thai Airways International
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$978 Roundtrip, found 6 days ago
$978
Roundtrip
found 6 days ago
Select Thai Airways International flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $978 found 6 days ago
Thai Airways International
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$980 Roundtrip, found 6 days ago
$980
Roundtrip
found 6 days ago
Select Thai Airways International flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $980 found 6 days ago
Thai Airways International
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$1,000 Roundtrip, found 6 days ago
$1,000
Roundtrip
found 6 days ago
Select Thai Airways International flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $1,000 found 6 days ago
Thai Airways International
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$1,019 Roundtrip, found 6 days ago
$1,019
Roundtrip
found 6 days ago
Select Thai Airways International flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $1,019 found 6 days ago
Thai Airways International
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$1,021 Roundtrip, found 6 days ago
$1,021
Roundtrip
found 6 days ago
Select Thai Airways International flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $1,021 found 6 days ago
Thai Airways International
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$1,026 Roundtrip, found 6 days ago
$1,026
Roundtrip
found 6 days ago
Select Thai Airways International flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $1,026 found 6 days ago
Malaysia Airlines
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$1,040 Roundtrip, found 6 days ago
$1,040
Roundtrip
found 6 days ago
Select Malaysia Airlines flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $1,040 found 6 days ago
Malaysia Airlines
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$1,043 Roundtrip, found 6 days ago
$1,043
Roundtrip
found 6 days ago
Select Malaysia Airlines flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $1,043 found 6 days ago
Malaysia Airlines
Wed, Nov 19 - Sat, Nov 29
SYD
Sydney
UTH
Udon Thani
$1,070 Roundtrip, found 6 days ago
$1,070
Roundtrip
found 6 days ago
Select Malaysia Airlines flight, departing Wed, Nov 19 from Sydney to Udon Thani, returning Sat, Nov 29, priced at $1,070 found 6 days ago

Frequently asked questions

How much does a flight from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH) cost?
Secure a cheap one-way flight from $501 or cheap return flight from $973 from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH)?
November is the most affordable month to fly from SYD to UTH. Avoiding peak travel times is often the key to better flight prices.
What is the cheapest airline that flies from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from SYD to UTH. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH)?
You'll need to book a flight with a layover when traveling from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from SYD to UTH?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH)?
To land at Udon Thani Intl. Airport (UTH) without delays, book a flight that leaves from Kingsford Smith Intl. Airport (SYD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH) last-minute?
Last-minute fares from SYD to UTH are generally more expensive. For the lowest rates, start searching for flights well ahead of time. That said, if you're flexible with your travel plans, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a SYD to UTH flight and hotel package?
Compared with arranging flights and hotels separately, booking a SYD to UTH flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the stress out of travel planning. Just pick your flights and select from our wide range of hotels, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Kingsford Smith Intl. Airport (SYD) to Udon Thani Intl. Airport (UTH)?
In most cases, you're able to cancel or reschedule your SYD to UTH flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further details, go to our Customer Service portal.

Travel information

Origin airport
Kingsford Smith Intl.
Destination airport
Udon Thani Intl.
Roundtrip price
$973
Distance
4764 mi

Book with confidence

Sydney to Udon Thani Flights

The cheapest times to fly from Sydney to Udon Thani

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

 

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

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

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 Sydney to Udon Thani in 2025. You can also book with separate airlines for your outbound and return journeys, from $501 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 Sydney to Udon Thani 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 Sydney to Udon Thani 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.

 

Sydney to Udon Thani Flights

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*Available to One Key members.