Cheap flights from Bangkok to Sydney from $233

In general, June is the cheapest month to fly from Bangkok to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $636. If you are unable to visit Sydney during the month of June, then departing from Bangkok during the month March is also very affordable. Most momondo users find prices during this month for around $721.

The cheapest day to depart from Bangkok to Sydney is on a Tuesday when prices can be found for as low as $858. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,046.

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from Bangkok to Sydney in the afternoon for as low as $922. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,002. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Bangkok Suvarnabhumi to Sydney Kingsford Smith for the best Bangkok - Sydney Kingsford Smith flight prices

You are more likely to see cheaper flights to Sydney from Bangkok when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $826 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Bangkok for as low as $630 on momondo.

There are 3 cabin classes available to choose from on Bangkok to Sydney flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

VietJet Air and Vietnam Airlines are the most popular carriers operating from Bangkok to Sydney Kingsford Smith

Scoot, Thai Airways and Qantas Airways are the top three most popular airlines that fly to Sydney from Bangkok according to our data. Scoot is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 4 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between Bangkok and Sydney have experienced a delay on any given week. The average delay length over the past 12 months has been 103 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

The number of flights available between Bangkok and Sydney is 14 per day as of September 2026. The most frequent departure time is 10:00PM, with 69% of daily flights leaving in the evening.

103 flights are operational weekly from Bangkok to Sydney as of September 2026. The most popular departure day for this route is Tue, with 17% of flights per week taking off on this day.