ExceptionalNonstop · 1.5h
SFO to LASUnited States
Las Vegas
$61
usually $155
−61%
Most monthly lows $130–$295. Cheaper than every other month on record (5).
Flights · SFO → SYD
San Francisco to Sydney
Best fare, round trip
$663
−42%
below its usual $1,140
you keep $477
RareFound
- Depart
- Sat 31 Oct
- Return
- Sat 14 Nov
- Stay
- 14 nights
- Flight
- 1 stop · 16.5h
- Airline
Alaska Airlines
Most of this route’s monthly lows fall between $943 and $1,142. The drop beats 90% of measured fares on the board, over 4 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 October around $663 and peak in December near $2,739, 313% dearer, across the 4 months we track. The cheapest itinerary we are tracking makes one stop and takes about 16.5 hours outbound, on a 14-night trip — ticketed under Alaska Airlines, which on a connecting fare need not operate every leg. At $663 for 11,948 km each way, that works out to about $28 per 1,000 km flown. That is well under the $42 per 1,000 km that ultra-long-haul fares on this board typically run. Of the 10 departure cities we track at a similar distance from Sydney, this is the cheapest right now — though Los Angeles is within a few dollars. That puts it in the cheaper half of the 48 routes of similar length we watch out of San Francisco, where the middle fare is $840. The best time to be in Sydney: Oct–Nov · Mar–Apr.
The 4 days we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 44% higher than when tracking began on 8 Aug — $1,187 then versus $1,714 now, across 19 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 $663, on 31 Oct.
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cached fares · checked 17 Oct 2026
Cheapest in Oct, around $663
42% below the $1,140 typical fare
$663Oct, the cheapest month. Compare October fares.$2739Dec, above the usual price. Compare December fares.$943Feb ’27, below the usual price. Compare February fares.$1142May, around the usual price. Compare May fares.
CheapestBelow usualUsualAbove usualPress a month to compare its fares
Cheapest round-trip fare found each month, San Francisco to Sydney, from cached prices.
Route facts
- Airports
- SFO · Oakland (OAK) · San José (SJC) ↔ Kingsford Smith (SYD)
- Flight time
- ≈16.5 hours outbound
- Distance
- ≈11,948 km each way
- Typical price
- $1,140 round-trip (seasonal median)
- Airlines on the board
- Alaska Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Oct–Nov · Mar–Apr
Good to know
SF → SYD, answered.
Is $663 a good price for San Francisco to Sydney?
Yes — the seasonal median for this route is around $1,140 round-trip. At $663 you're 42% below that, which we rate rare for this route.
What is the cheapest month to fly from San Francisco to Sydney?
Across 4 months of cached-fare history, Oct 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 SF → 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 4 months of cached fares, Oct comes out lowest on this route. Our guide Why flight prices change covers what does move a fare.
Are there nonstop flights from San Francisco to Sydney?
The current cheapest fares involve a connection, ticketed under Alaska Airlines. 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 31 Oct – 14 Nov · 14 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next SF → SYD drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
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