Cheap flights from Bangkok to Sydney from £172

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 £470. If you don’t want to visit Sydney in June, then you should wait until March to fly from Bangkok, when ticket prices are also cheap, with an average price of £533.

The cheapest day to depart on your flight to Sydney is on a Wednesday when prices can be found for as low as £433. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from Bangkok because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £864.

According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Bangkok to Sydney in the morning for as low as £612. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Sydney, so prices are often more expensive at around £679 per ticket.

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 £611 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 for as low as £466 on momondo.

There are 2 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 is the most popular carrier operating from Bangkok to Sydney Kingsford Smith

Qantas Airways, Emirates and Thai Airways are the top three most popular airlines that fly to Sydney from Bangkok according to our data. Qantas Airways is the first choice among our users, with 41% of people opting to fly with this airline when travelling 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 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 8% of their flights experiencing any sort of delay.

As of September 2026, there are 18 flights per day flying from Bangkok to Sydney. The most common time of day flights depart is 22:00, with 67% of flights taking off in the evening.

129 flights are operational weekly from Bangkok to Sydney as of September 2026. The most popular departure day for this route is Sat, with 19% of flights per week taking off on this day.