Chicago → Buenos Aires flights

Chicago–Buenos Aires fares cluster near $389, rarely above $461

Key takeaways

• Median fare of $389 anchors this route, matching the observed low — a strong sign of pricing consistency.
• Bottom quartile sits at $389, meaning at least a quarter of snapshots matched the cheapest fare seen.
• Top end tops out at $461, just a 19% spread from the median — a relatively tight range.
• Sample size is thin at 12 days, so treat these numbers as a directional read rather than a firm forecast.
• No carrier or day-of-week pattern is visible in the data, so timing within the week isn't a reliable lever here.

30-day price trend

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

The full picture

Over the 12-day snapshot window, ORD–EZE fares moved in a narrow band: $389 at the low end (also the median) up to $461 at the high end. A 19% spread is modest by international long-haul standards, suggesting this route doesn't swing wildly day to day — travelers aren't likely to find dramatic discounts below $389, but they also aren't likely to get blindsided by fares far above $461 if booking within a similar horizon to this sample.

Because the median and low are identical, the data implies prices spent much of the window sitting at or near the floor, with occasional upward moves toward $461 rather than the reverse. That's a useful signal: if you see a fare close to $389, it's likely at or near the best this route offers, and waiting for something meaningfully lower may not pay off. We don't have visibility into how prices behave further out (90+ days) or closer to departure, so we can't responsibly claim a specific booking window softens fares — only that within the period captured, $389–$461 was the effective range.

No dominant carrier or weekday pattern emerged from this dataset, so we can't offer guidance on specific airlines or departure days — doing so would be guesswork dressed as insight. The honest caveat: 12 data points is a small sample for a route with seasonal demand swings like Buenos Aires service, and this snapshot may not capture peak or trough pricing periods (e.g., Southern Hemisphere summer travel). Treat $389 as a strong reference point for a fair price, but confirm with a fresh search closer to your intended travel dates.

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