Cheap flights from Bangkok Suvarnabhumi Airport to Sydney from $325

The month of June is, on average, the cheapest month to fly to Sydney from Bangkok Suvarnabhumi Airport, with most prices found around $887. If you aren’t able to travel to Sydney during the month of June, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,007.

Our data shows that Thursday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,115. The most expensive day to fly to Sydney is Sunday, with ticket prices averaging around $1,275.

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 Suvarnabhumi Airport to Sydney in the afternoon for as low as $1,151. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,301 on average. Flights to Sydney from Bangkok Suvarnabhumi Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Sydney from Bangkok Suvarnabhumi Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,152 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Bangkok Suvarnabhumi Airport for as low as $879 on momondo.

There are 3 cabin classes available to choose from on Bangkok Suvarnabhumi Airport 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 China Eastern are the most popular carriers operating from Bangkok Suvarnabhumi to Sydney Kingsford Smith

Qantas Airways, Thai Airways and Scoot are the top three most popular airlines that fly to Sydney from Bangkok Suvarnabhumi Airport according to our data. Qantas Airways is the first choice among our users, with 44% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 6 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 102 minutes.

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

Tuesday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

Singapore (SIN) was the most common stop: 62% of momondo users choosing one-stop flights on this route connected there.

Flights via Guangzhou (CAN) offer the lowest average return price of $637.

Flights connecting via Singapore (SIN) have the shortest average one-way travel time: 13h 23m.

Hong Kong (HKG) has the shortest average stopover time for this route: 1h 33m.

As of September 2026, 18 flights take off from Bangkok Suvarnabhumi Airport and land in Sydney each day. The most common flight departure time for this route is 22:00, with 67% of daily flights taking off in the evening.

As of September 2026, 126 flights take off from Bangkok Suvarnabhumi Airport and land in Sydney each week. The most common flight departure day for this route is Wed, with 15% of weekly flights taking off on this day.