Seattle → Sydney flights

Fares hold near $503 — spread is tight, so don't overthink timing

Key takeaways

• Median fare sits at $503, matching both the low and the 25th percentile — most snapshots cluster at the floor.
• High end reaches $574, only a 14% spread from top to bottom — this is a low-volatility route.
• Bottom quartile ($503) and median are identical, suggesting the cheap fare is often available, not a rare dip.
• Sample size is thin at 12 days, so treat this as an early read rather than a settled pattern.
• No reliable day-of-week or carrier signal available from this data — the sample doesn't support that level of detail.

30-day price trend

See full numbers and stats on the SEA → SYD price history page.

The full picture

Across 12 daily snapshots, Seattle to Sydney fares have stayed remarkably consistent, with a median of $503 and a high of just $574 — a 14% spread that qualifies as tight by long-haul international standards. When the 25th percentile matches the median exactly, it tells us the $503 price point isn't a fleeting discount; it's showing up repeatedly across the tracking window, which is good news for travelers who don't want to obsess over timing.

With this little volatility, there's no strong evidence of a booking window where prices reliably soften — the data doesn't show a clear early-bird discount or a last-minute spike pattern. What we can say is that fares above $512 (the 75th percentile) have been the exception rather than the rule, so if you're quoted something meaningfully higher than $550, it's worth checking a few more dates or waiting a few days rather than assuming that's the going rate.

We don't have enough visibility into carrier mix or day-of-week patterns in this dataset to make specific claims there — with only 12 samples, slicing further would be guessing dressed up as insight. The honest takeaway: this route has been stable and the median fare is a reasonable target, but 12 days is a short observation window, and longer-haul routes like this one can still see seasonal swings that this snapshot simply hasn't captured yet.

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