Rare1 stop · 16.5h
BKK to BCNSpain
Barcelona
$516
usually $870
−41%
Most monthly lows $697–$881. Cheaper than every other month on record (5).
Flights · BKK → SYD
Bangkok to Sydney
Best fare, round trip
$493
−9%
below its usual $540
you keep $47
Found
- Depart
- Mon 10 May
- Return
- Sun 16 May
- Stay
- 6 nights
- Flight
- 2 stops · 11h
- Airline
Thai AirAsia
Most of this route’s monthly lows fall between $533 and $552. The drop beats 18% of measured fares on the board, over 8 observed months.
Cached fare — the booking search re-prices live before you pay.
AustraliaSydneyHarbour sails, cliff walks and flat whites that ruin you for coffee anywhere else.Best windowOct–Nov · Mar–AprAirportsKingsford Smith (SYD)Every route into SydneyFare seasonality
When this route gets cheap.
Fares bottom out in May around $493 and peak in January near $609, 24% dearer, across the 8 months we track. The cheapest itinerary we are tracking makes 2 stops and takes about 11 hours outbound, on a 6-night trip — ticketed under Thai AirAsia, which on a connecting fare need not operate every leg. At $493 for 7,536 km each way, that works out to about $33 per 1,000 km flown. That is below the $44 per 1,000 km typical of long-haul fares here. Across the 9 departure cities we track at a similar distance from Sydney, this fare ranks 3rd — 19% above the $414 from Singapore. That puts it in the cheaper half of the 29 routes of similar length we watch out of Bangkok, where the middle fare is $658. The best time to be in Sydney: Oct–Nov · Mar–Apr.
Cheapest day in the next 4 months: 21 Oct, $529
Press a day to compare its fares
The median cached fare across this calendar is 18% higher than when tracking began on 8 Aug — $521 then versus $617 now, across 18 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $447, on 20 Oct.
October 2026
131415161718Monday 19 October: $584, around the usual price. Compare fares from this day.20Wednesday 21 October: $529, the cheapest day in view. Compare fares from this day.Thursday 22 October: $563, below the usual price. Compare fares from this day.Friday 23 October: $583, around the usual price. Compare fares from this day.24Sunday 25 October: $568, below the usual price. Compare fares from this day.26Tuesday 27 October: $590, around the usual price. Compare fares from this day.Wednesday 28 October: $580, around the usual price. Compare fares from this day.293031
November 2026
Sunday 1 November: $565, below the usual price. Compare fares from this day.Monday 2 November: $605, around the usual price. Compare fares from this day.Tuesday 3 November: $567, below the usual price. Compare fares from this day.Wednesday 4 November: $536, below the usual price. Compare fares from this day.Thursday 5 November: $529, below the usual price. Compare fares from this day.6Saturday 7 November: $569, below the usual price. Compare fares from this day.89101112Friday 13 November: $578, around the usual price. Compare fares from this day.Saturday 14 November: $574, around the usual price. Compare fares from this day.15Monday 16 November: $612, around the usual price. Compare fares from this day.Tuesday 17 November: $634, around the usual price. Compare fares from this day.Wednesday 18 November: $558, below the usual price. Compare fares from this day.Thursday 19 November: $691, around the usual price. Compare fares from this day.20Saturday 21 November: $575, around the usual price. Compare fares from this day.22Monday 23 November: $670, around the usual price. Compare fares from this day.Tuesday 24 November: $701, around the usual price. Compare fares from this day.2526Friday 27 November: $776, above the usual price. Compare fares from this day.Saturday 28 November: $722, above the usual price. Compare fares from this day.29Monday 30 November: $776, above the usual price. Compare fares from this day.
December 2026
Tuesday 1 December: $637, around the usual price. Compare fares from this day.Wednesday 2 December: $640, around the usual price. Compare fares from this day.Thursday 3 December: $715, above the usual price. Compare fares from this day.Friday 4 December: $712, above the usual price. Compare fares from this day.5Sunday 6 December: $881, above the usual price. Compare fares from this day.Monday 7 December: $897, above the usual price. Compare fares from this day.Tuesday 8 December: $734, above the usual price. Compare fares from this day.9Thursday 10 December: $776, above the usual price. Compare fares from this day.1112Sunday 13 December: $715, above the usual price. Compare fares from this day.Monday 14 December: $826, above the usual price. Compare fares from this day.1516Thursday 17 December: $584, around the usual price. Compare fares from this day.Friday 18 December: $590, around the usual price. Compare fares from this day.Saturday 19 December: $585, around the usual price. Compare fares from this day.Sunday 20 December: $608, around the usual price. Compare fares from this day.Monday 21 December: $570, around the usual price. Compare fares from this day.Tuesday 22 December: $586, around the usual price. Compare fares from this day.Wednesday 23 December: $622, around the usual price. Compare fares from this day.Thursday 24 December: $604, around the usual price. Compare fares from this day.Friday 25 December: $691, around the usual price. Compare fares from this day.2627Monday 28 December: $608, around the usual price. Compare fares from this day.Tuesday 29 December: $688, around the usual price. Compare fares from this day.30Thursday 31 December: $670, around the usual price. Compare fares from this day.
January 2027
1Saturday 2 January: $1.9k, above the usual price. Compare fares from this day.3Monday 4 January: $770, above the usual price. Compare fares from this day.56789Sunday 10 January: $942, above the usual price. Compare fares from this day.11Tuesday 12 January: $907, above the usual price. Compare fares from this day.131415161718192021222324252627282930Sunday 31 January: $628, around the usual price. Compare fares from this day.
CheapestBelow usualUsualAbove usualCached fares · checked 13 Oct 2026 · bands from 150 tracked fares
Cheapest in May, around $493
9% below the $540 typical fare
$524Oct, around the usual price. Compare October fares.$529Nov, around the usual price. Compare November fares.$570Dec, above the usual price. Compare December fares.$609Jan ’27, above the usual price. Compare January fares.$533Feb, around the usual price. Compare February fares.$538Mar, around the usual price. Compare March fares.$552Apr, around the usual price. Compare April fares.$493May, the cheapest month. Compare May fares.
CheapestBelow usualUsualAbove usualPress a month to compare its fares
Cheapest round-trip fare found each month, Bangkok to Sydney, from cached prices.
Route facts
- Airports
- Suvarnabhumi (BKK) · Don Mueang (DMK) ↔ Kingsford Smith (SYD)
- Flight time
- ≈11 hours outbound
- Distance
- ≈7,536 km each way
- Typical price
- $540 round-trip (seasonal median)
- Airlines on the board
- Thai AirAsia
- Itineraries
- Connections on current fares
- Best months to visit
- Oct–Nov · Mar–Apr
Good to know
BKK → SYD, answered.
Is $493 a good price for Bangkok to Sydney?
Only slightly. The seasonal median is around $540 round-trip and this fare is 9% under it. We do not call a drop notable until 20%, so this is an ordinary price for the route rather than a reason to hurry.
What is the cheapest month to fly from Bangkok to Sydney?
Across 8 months of cached-fare history, May comes out cheapest on this route. The best months to actually be in Sydney are Oct–Nov · Mar–Apr — when those overlap, that's your window.
How far in advance should I book BKK → Sydney?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 8 months of cached fares, May comes out lowest on this route. Our guide Why flight prices change covers what does move a fare.
Are there nonstop flights from Bangkok to Sydney?
The current cheapest fares involve a connection, ticketed under Thai AirAsia. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on 17 October). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Sydney?
Lock the flight first — then compare stays for 10–16 May '27 · 6 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next BKK → SYD drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
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