$299 Cheap Flights from Sydney (SYD) to Bangkok (DMK)

View $299 flight on Sun, Nov 2, 2025Opens in a new window

Popular airlines from Sydney Airport (SYD) to Don Mueang Intl. Airport (DMK)

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Cheap Flights from Sydney to Bangkok (SYD-DMK)

Prices were available within the past 7 days and start at $299 for one-way flights and $647 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Batik air
Wed, Nov 5 - Wed, Nov 19
SYD
Sydney
DMK
Bangkok
$647 Roundtrip, found 5 days ago
$647
Roundtrip
found 5 days ago
Select Batik air flight, departing Wed, Nov 5 from Sydney to Bangkok, returning Wed, Nov 19, priced at $647 found 5 days ago
Batik air
Thu, Oct 30 - Wed, Nov 12
SYD
Sydney
DMK
Bangkok
$689 Roundtrip, found 2 days ago
$689
Roundtrip
found 2 days ago
Select Batik air flight, departing Thu, Oct 30 from Sydney to Bangkok, returning Wed, Nov 12, priced at $689 found 2 days ago
Batik air
Wed, Nov 5 - Wed, Nov 12
SYD
Sydney
DMK
Bangkok
$690 Roundtrip, found 6 days ago
$690
Roundtrip
found 6 days ago
Select Batik air flight, departing Wed, Nov 5 from Sydney to Bangkok, returning Wed, Nov 12, priced at $690 found 6 days ago
Batik air
Wed, Aug 20 - Sun, Aug 24
SYD
Sydney
DMK
Bangkok
$691 Roundtrip, found 6 days ago
$691
Roundtrip
found 6 days ago
Select Batik air flight, departing Wed, Aug 20 from Sydney to Bangkok, returning Sun, Aug 24, priced at $691 found 6 days ago
Batik air
Mon, Nov 3 - Fri, Nov 28
SYD
Sydney
DMK
Bangkok
$691 Roundtrip, found 3 days ago
$691
Roundtrip
found 3 days ago
Select Batik air flight, departing Mon, Nov 3 from Sydney to Bangkok, returning Fri, Nov 28, priced at $691 found 3 days ago
Batik air
Wed, Nov 5 - Wed, Nov 19
SYD
Sydney
DMK
Bangkok
$692 Roundtrip, found 5 days ago
$692
Roundtrip
found 5 days ago
Select Batik air flight, departing Wed, Nov 5 from Sydney to Bangkok, returning Wed, Nov 19, priced at $692 found 5 days ago
Batik air
Sun, Nov 9 - Thu, Nov 20
SYD
Sydney
DMK
Bangkok
$695 Roundtrip, found 2 days ago
$695
Roundtrip
found 2 days ago
Select Batik air flight, departing Sun, Nov 9 from Sydney to Bangkok, returning Thu, Nov 20, priced at $695 found 2 days ago
Batik air
Mon, Oct 20 - Mon, Nov 3
SYD
Sydney
DMK
Bangkok
$710 Roundtrip, found 6 days ago
$710
Roundtrip
found 6 days ago
Select Batik air flight, departing Mon, Oct 20 from Sydney to Bangkok, returning Mon, Nov 3, priced at $710 found 6 days ago
Batik Air Indonesia
Sun, Nov 30 - Tue, Dec 16
SYD
Sydney
DMK
Bangkok
$710 Roundtrip, found 16 hours ago
$710
Roundtrip
found 16 hours ago
Select Batik Air Indonesia flight, departing Sun, Nov 30 from Sydney to Bangkok, returning Tue, Dec 16, priced at $710 found 16 hours ago
Batik Air Indonesia
Mon, Dec 1 - Wed, Dec 10
SYD
Sydney
DMK
Bangkok
$713 Roundtrip, found 2 days ago
$713
Roundtrip
found 2 days ago
Select Batik Air Indonesia flight, departing Mon, Dec 1 from Sydney to Bangkok, returning Wed, Dec 10, priced at $713 found 2 days ago

Alternative airports near Bangkok

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

Select flight to Suvarnabhumi Intl. BKK. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $365
BKK
Suvarnabhumi Intl.
Cheapest
Average driving time to city center23 min
Flights from $365
Flights from Sydney (SYD) to Bangkok (DMK)
Origin airport
Kingsford Smith Intl.
Destination airport
Don Mueang Intl.
Airlines serving
Batik Air Indonesia
Roundtrip price
$646
Distance
4686 mi

Sydney to Bangkok Flights

The cheapest times to fly from Sydney to Bangkok

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

 

The best time to book a flight from Sydney to Bangkok

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

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 Bangkok in 2025. You can also book with separate airlines for your outbound and return journeys, from $299 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 Bangkok 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 Bangkok 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.

 

Frequently asked questions

How much does a flight from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK) cost?
Secure a cheap one-way flight from $299 or cheap return flight from $647 from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
November is the least expensive month to fly from SYD to DMK. Avoiding peak travel times is often the key to finding better deals on flights.
Which airlines fly direct from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
Catch a nonstop flight with Thai AirAsia X and journey straight from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK).
What is the cheapest airline that flies from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SYD to DMK flight.
How many flights per day from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
On average, there are 5 direct flights flying from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK) weekly. If you can't find one that suits your schedule, consider taking a flight that includes a layover. Customize your search on Expedia to include one stop or more and select the next best alternative.
What are the most popular departure times for flights from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
The 9 PM departures from SYD to DMK are typically the busiest. Greater demand means you'll likely pay more for these departures. If you want to save on your fare, pick a less crowded time to fly.
What day of the week has the most flights from SYD to DMK?
Fly on a Friday if you're after the best choice of flights from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK).
What is the earliest flight from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
Catch the earliest flight at around 8:20AM UTC+11, departing from Kingsford Smith Intl. Airport (SYD). You'll be traveling for about 9h 55m, coming in to land at Don Mueang Intl. Airport (DMK) at approximately 2:15PM UTC+7.
How long does it take to fly from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
The average flight time from SYD to DMK is 9 hours and 55 minutes, covering a total distance of 4,700 mi.
What is the best time to fly from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
To land at Don Mueang Intl. Airport (DMK) on time, opt for a flight that leaves Kingsford Smith Intl. Airport (SYD) 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.
What airports do you fly into for Bangkok from Kingsford Smith Intl. Airport (SYD)?
You'll arrive at Suvarnabhumi Intl. Airport (BKK) or Don Mueang Intl. Airport (DMK) when traveling to Bangkok on a direct flight from Kingsford Smith Intl. Airport (SYD).
Is it cheaper to buy a plane ticket from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK) last-minute?
Booking your plane ticket from SYD to DMK just before your getaway is generally more expensive. But if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a SYD to DMK flight and hotel package?
Securing a SYD to DMK flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our impressive range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kingsford Smith Intl. Airport (SYD) to Don Mueang Intl. Airport (DMK)?
If you reserved your SYD to DMK flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.