Houston → Mexico City flights

IAH–MEX fares cluster tight around $84 — book early either way

Key takeaways

• Median fare is $84, with 50% of observed prices falling between $83 and $87 (p25–p75).
• The full observed range spans just $82–$92 — a spread of only 12%, which is unusually tight for an international route.
• Because the low end sits at $82, chasing a dramatically cheaper fare than median is unlikely to pay off based on this data window.
• No strong day-of-week signal is visible in this dataset — the compressed range makes it hard to attribute any savings to booking timing patterns.
• With fares this stable, the main risk is inventory shrinkage, not price volatility — booking sooner reduces the chance of watching $84 become $92.

30-day price trend

See full numbers and stats on the IAH → MEX price history page.

The full picture

The Houston (IAH) to Mexico City (MEX) route is showing unusually stable pricing across our 30-day snapshot window. With a median of $84 and a p25–p75 interquartile range of just $83–$87, roughly half of all observed fares landed within a four-dollar band. The absolute floor was $82 and the ceiling $92, producing a spread of 12% — well below the 20–30% swings that typically characterize short-haul international routes. In practical terms, this is not a route where patient waiting is likely to surface a meaningfully better deal.

Because the data reflects cached fares from a rolling 30-day window rather than a forward-looking booking curve, we cannot pinpoint a precise "book X weeks out" rule. What the tight spread does suggest is that this corridor is either well-supplied relative to demand, or that competitive pressure between carriers is keeping prices anchored. Either way, the evidence does not support holding out for a dramatic dip — the gap between the cheapest observed fare ($82) and the median ($84) is just $2, and dipping below the p25 of $83 requires catching a relatively rare moment.

For travelers planning this trip, the straightforward takeaway is to book when the fare shows $84 or below and treat anything at or under $87 as within normal range. There is no day-of-week or carrier pattern visible in this dataset that would justify more tactical timing. One honest caveat: 30 daily snapshots capture a specific slice of time and may not reflect seasonal surges — holiday periods around Semana Santa, Christmas, or major Mexican national holidays can break these patterns entirely, and fares during peak travel windows should be checked independently.

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