Seattle → Buenos Aires flights

Fares cluster near $566 — window is tight, so book without delay

Key takeaways

• $566 median fare over the sampled window, with a tight range to the $639 high
• Bottom quartile sits at $566, meaning a quarter of observed fares were at or near the floor already
• Spread of just 14% suggests limited volatility — this isn't a route prone to dramatic swings
• Only 11 snapshots sampled, so treat this as a directional read rather than a statistically robust trend
• Fares at or below $596 (p75) represent the bulk of observed pricing — a reasonable target range

30-day price trend

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

The full picture

The data shows a relatively narrow band for Seattle to Buenos Aires fares: a $559 low, $639 high, and median of $566, for a spread of 14%. That's a tight range by long-haul international standards, and it tells us this route isn't swinging wildly day to day — travelers are unlikely to stumble into a fare dramatically below the median, but they're also not at high risk of getting badly surprised on the upside if they book within a reasonable window.

With only 11 daily snapshots in this sample, we can't make confident claims about a specific softening point in the booking horizon — there isn't enough history here to say prices reliably dip at 60 days out versus 21 days out, for instance. What we can say is that a quarter of the observed fares came in right at the $566 median itself (the p25 and median are identical), while the top quartile stretched up toward $596 and beyond, capping out at $639. That means most of the pricing activity we captured sat in a fairly compressed $566–$596 band, with only occasional spikes toward the high end.

We don't have enough visibility into carrier-level data here to say anything meaningful about which airline is driving the lower fares or whether specific days of the week matter — the sample simply isn't built for that granularity. The honest takeaway: this route's pricing looks stable rather than deal-prone, so a traveler fixated on timing the market for a steep discount may be waiting for a pattern that this data doesn't show. Booking when a fare lands at or below the $566–$596 range looks like a reasonably solid outcome given what we've observed, though the thin sample size (11 days) means this should be treated as a snapshot in time, not a long-term seasonal trend.

Ready to look at fares?

• When to book
  Seattle → Buenos Aires
  AI-authored booking-window guide
  Open →
• Price history
  Seattle → Buenos Aires
  30-day daily price snapshots
  Open →
• Where to stay
  Best hotels in Buenos Aires
  🇦🇷 Argentina
  Open →
• When to book
  Seattle → Tokyo
  Same origin, different destination
  Open →
• Read
  Mount Fitz Roy In Patagonia: Things To Know Before The Hike
  Argentina · 18 min
  Open →