Thai Airways offers great food on long-haul flights, with delicious Thai dishes like curry and pad thai.
Thai Airways' Royal Silk class offers a cost-effective fare with comfortable seats and attentive service.

Most accurate provider | Gotogate 3 stars |
|---|---|
Most trusted provider | Gotogate 3 stars |
Round-trip from | $395 (CheapOair) |
One-way from | $206 (SmartFares) |
Popular in | December |
Cheapest in | October |
Average price | $800 |
Good round-trip deal | $867 or less |
Good one-way deal | $532 or less |
Fly from
Fly to
Route
Depart
Return
Price
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Sun 2/1
10:00 am-1:15 am
3 stops43h 15m
Bangkok Suvarnabhumi
Fri 3/6
5:45 am-1:35 pm
1 stop27h 50m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Mon 2/16
10:15 pm-7:20 pm
1 stop25h 05m
Bangkok Suvarnabhumi
Sat 2/21
5:40 am-7:55 am
1 stop22h 15m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Wed 4/22
10:15 am-1:00 pm
2 stops29h 45m
Bangkok Suvarnabhumi
Sat 6/20
2:00 pm-7:20 am
2 stops38h 20m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Wed 3/18
1:35 pm-10:10 pm
1 stop12h 35m
Bangkok Suvarnabhumi
Fri 3/27
2:35 am-7:20 am
2 stops24h 45m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Tue 3/17
11:15 am-2:05 pm
2 stops30h 50m
Bangkok Suvarnabhumi
Wed 3/25
6:35 pm-8:05 am
2 stops33h 30m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Wed 5/27
10:15 am-10:20 am
1 stop27h 05m
Bangkok Suvarnabhumi
Thu 6/11
11:55 am-8:15 am
2 stops17h 20m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Thu 5/7
9:50 am-4:40 pm
Nonstop9h 50m
Bangkok Suvarnabhumi
Mon 5/11
6:10 pm-6:25 am
Nonstop9h 15m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Thu 3/12
10:20 am-4:10 pm
Nonstop9h 50m
Bangkok Suvarnabhumi
Wed 3/25
6:00 pm-7:35 am
Nonstop9h 35m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Wed 3/4
10:20 am-4:10 pm
Nonstop9h 50m
Bangkok Suvarnabhumi
Wed 3/18
6:00 pm-7:35 am
Nonstop9h 35m
SydneyBangkok
SYD - BKK
SYDBKK
Sydney Kingsford Smith
Tue 3/3
10:20 am-4:10 pm
Nonstop9h 50m
Bangkok Suvarnabhumi
Tue 3/17
6:00 pm-7:35 am
Nonstop9h 35m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
The best time to book flights from Sydney to Bangkok Suvarnabhumi Airport is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, May is the cheapest month in which you can book a flight from Sydney to Bangkok Suvarnabhumi Airport (average of $292). Flying from Sydney to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $561). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sydney to Bangkok Suvarnabhumi Airport as you normally would.
About 13% of weekly flights between Sydney and Bangkok have experienced delays in the past year, with the average delay time being 95 minutes.
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Thai Airways have had the lowest number of delays on this route, with just 10% of flights being delayed.
Singapore (SIN) – chosen by Cheapflights users on 74% of 1-stop itineraries from Sydney to Bangkok Suvarnabhumi Airport on Cheapflights.
Singapore (SIN) is the most affordable 1-stop option, with an average round-trip price of $432.
Flights via Hong Kong (HKG) have the shortest average one-way travel time for 1-stop routes: 13h 20m.
Flights via Hong Kong (HKG) offer the fastest connection on this route, with an average layover time of 0h 55m.
Crew
Entertainment
Overall
Food
Comfort
Boarding
Reviews
Namakajjo,Dec 2025
EBB - DXB
Crew
Entertainment
Overall
Food
Comfort
Boarding
Reviews
Namakajjo,Dec 2025
EBB - DXB
Crew
Entertainment
Overall
Food
Comfort
Boarding
Reviews
Namakajjo,Dec 2025
EBB - DXB
Crew
Entertainment
Overall
Food
Comfort
Boarding
Reviews
Namakajjo,Dec 2025
EBB - DXB
Crew
Entertainment
Overall
Food
Comfort
Boarding
Reviews
Namakajjo,Dec 2025
EBB - DXB
Crew
Entertainment
Overall
Food
Comfort
Boarding
Reviews
Namakajjo,Dec 2025
EBB - DXB
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$239 | Average$477 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$291 | Average$384 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$468 | Average$736 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$525 | Average$781 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$606 | Average$845 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$628 | Average$778 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$631 | Average$695 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$631 | Average$741 | FlexibilityNo cancel fee | On-time75% |