Washington → Mexico City flights

Target $270 or less on DCA–MEX — low end dips to $153

Key takeaways

• Median fare is $270, based on 30 daily snapshots of the cheapest available round-trip fares on this route.
• Bottom quartile (p25) sits at $153, meaning at least 25% of observed fares came in at or below that floor — a meaningful gap from the median.
• Top quartile (p75) is $282, so the upper half of fares clusters tightly between $270 and $282, while the low end has much more room to move.
• Spread of 92% between the low and high ($153 vs. $294) is exceptionally wide, indicating that timing has a significant impact on what you'll pay.
• The $153 low is not the norm — it likely reflects a short window of promotional or off-peak availability, so build in flexibility rather than counting on it.

30-day price trend

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

The full picture

The $153–$294 range on Washington DCA to Mexico City MEX is unusually wide for a single route: a 92% spread between the observed low and high means where you land in the booking window matters considerably. The median of $270 is a reasonable anchor for budgeting, but the p25 of $153 — matched or beaten in at least a quarter of the 30 daily snapshots — shows that materially cheaper fares do surface. What separates them from the median isn't entirely predictable, but the gap is large enough ($117) to justify monitoring fares over several weeks rather than booking on first search.

The tight clustering at the upper end — p75 at $282, high at $294 — tells a clear story: once you're above the median, prices don't have much further to go. The risk of waiting is relatively low in dollar terms at the top of the range. The reward for patience, however, can be substantial if you're able to catch fares closer to that p25 floor. A practical approach is to set a fare alert at or below $220 as an aspirational target, while treating anything at or below the $270 median as a reasonable buy if your travel dates are firm.

No dominant carrier pattern is visible from this dataset, so it would be misleading to steer you toward a specific airline on the basis of these snapshots alone. Similarly, while some travelers assume mid-week bookings reliably deliver lower fares, that specific pattern isn't supported by this data. The honest caveat here is that 30 snapshots capture the cheapest available fare each day, not the full distribution — the $153 low could reflect a single promotional run that has since expired. Don't plan your budget around the floor; plan it around the median and treat anything lower as a bonus.

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