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Houston–Buenos Aires fares show a $371 median over the last 30 days, with a wide spread — book early and stay flexible on dates.
Written from this route's 30-day price index (30 daily samples). Article last regenerated Nov 7, 2026.
See full numbers and stats on the IAH → EZE price history page.
Thirty days of cached fares on the Houston-to-Buenos Aires route show a median of $371, with the overall range stretching from $342 to $627. That's an 83% spread between the cheapest and priciest fares seen — a wide gap that signals real volatility rather than a tight, predictable market. Notably, the p25 figure matches the median almost exactly, meaning a full quarter of sampled days priced at or below $371, while the top quarter climbed well past $573 toward the $627 ceiling. In practice, this means travelers who shop around have a real shot at landing near the low end, but those who wait or hit the wrong dates can pay considerably more.
We don't have day-by-day booking-horizon data showing exactly when within the 30-day window fares softened, so we can't point to a specific number of days out as the sweet spot. What the spread does suggest is that this route rewards flexibility: with such a wide gap between the middle-half band ($371-$573) and the $627 high, waiting for a lower-priced window — rather than booking the first fare you see — is likely to pay off given how often cheaper fares appeared in the sample.
No single carrier dominance was visible in this data, so we can't make claims about airline-specific pricing patterns or day-of-week effects on this route. What we can say with confidence is that the fare range is broad enough that shopping across multiple dates matters more than usual here. The honest caveat: this snapshot reflects 30 cached fare samples over the past month, not a seasonal or multi-year trend, so prices outside this window — especially around holidays or peak South American summer travel — could behave differently.
Why we regenerated this article: Median fare ↓ 10% ($412 → $371). We only rewrite when the underlying price index actually moves — stable weeks keep the previous take.
AI-authored from this route's 30-day price index. Article last regenerated Nov 7, 2026. Fares shift continuously — confirm at booking.