Seattle → Singapore flights

Seattle–Singapore: target $386–$393 and book well ahead

Key takeaways

• Median fare: $393 across 30 daily snapshots of the cheapest available cached fares.
• Bottom 25% of fares came in at $386 or below — a relatively tight band that suggests consistent baseline pricing on this route.
• The floor was $339, roughly 14% below the median, meaning genuine deals exist but aren't the norm.
• Spread of 36% between low ($339) and high ($461) indicates meaningful price volatility — waiting too long risks paying $60–$70 above the median.
• The interquartile range is narrow ($386–$412), so most shoppers will land close to the median; outlier lows require timing and flexibility.

30-day price trend

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

The full picture

Seattle to Singapore is a long-haul transpacific route — typically 17–20 hours with at least one stop — and the 30-day fare snapshot data reflects pricing that is both relatively stable and occasionally punishing for late bookers. The median of $393 sits just $7 above the 25th-percentile price of $386, which tells us that the 'typical' fare and the 'good' fare are nearly the same thing on this route. That's actually a useful signal: you don't need to hunt aggressively for a deal if you're already shopping in advance — the market is fairly efficient near that $386–$412 band.

The more important story is the ceiling. The high of $461 is 17% above the median, and the spread of 36% from low to high is wide enough to matter on a ticket of this value. Historically on long-haul routes, fares tend to firm up inside the 3–4 week window before departure as seats fill on the limited nonstop or preferred connection options. The practical implication: shopping 6–10 weeks out is where you're most likely to find fares in the bottom quartile ($386 and below), including the occasional dip toward $339. No specific booking-day pattern is visible in this dataset, so claims about 'cheapest day to buy' are not supported here.

One honest caveat: 30 daily snapshots capture a single point-in-time slice of a dynamic market. Fares on a route this long are sensitive to fuel surcharges, alliance inventory decisions, and seasonal demand shifts around school holidays in both the U.S. and Singapore. The $339 low is real but rare — treat it as a ceiling on your ambition rather than a planning assumption.

Ready to look at fares?

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