Seattle → Taipei flights

Target $599 on SEA–TPE, but a $357 floor exists if you're patient

Key takeaways

• Median fare is $599, and half of all observed prices landed right at or below that — a reasonable planning anchor.
• The low was $357 — roughly 40% below median — signaling genuine sale windows exist on this route.
• The high reached $721, so waiting too long without a target in mind carries real upside risk of ~$120 above median.
• The interquartile range runs $599–$703, meaning the bottom 25% of fares cluster tightly at the median — occasional dips below it are notable when they appear.
• A 102% price spread is unusually wide for a single route, indicating this corridor is sensitive to timing, demand surges, or promotional fare drops.

30-day price trend

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

The full picture

Seattle–Taipei is a long-haul transpacific route where fares can move dramatically depending on when you look. Across 21 daily snapshots, the cheapest available fare ranged from a floor of $357 all the way to $721 — a $364 swing that represents a 102% spread relative to the low. The median of $599 sits close to the 25th percentile ($599 exactly), which tells an interesting story: most days fares are clustered in a $599–$703 band, but when they drop, they can drop hard toward the mid-$300s. That asymmetry means the reward for catching a sale is substantial, while simply buying at the median is still reasonable if your schedule is fixed.

On a route of this length and price volatility, the conventional wisdom of booking 6–10 weeks out for transpacific itineraries generally holds — carriers tend to release promotional inventory in that window before it tightens closer to departure. The $357 low observed in this dataset likely represents exactly that kind of limited promotional fare. If you can monitor the route and act quickly when a fare dips well below $500, the data suggests those windows do open. Setting a fare alert at $450–$480 gives you a realistic trigger that's meaningfully below median without chasing a floor that may not recur.

Carrier-level patterns aren't distinguishable from the data provided, so it would be misleading to recommend one airline over another on price grounds here. One honest caveat: with only 21 snapshots, this dataset captures roughly three weeks of a single price environment — seasonal shifts (particularly around Lunar New Year, summer, and major Taiwanese holidays) can push fares well above the $721 high observed here. Treat these figures as a baseline for off-peak or shoulder-season planning, and re-check if your travel falls near a holiday window.

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