July is the cheapest month to fly this route, with average fares around $289 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $298 | $262 | ||
| June 2026 | $299 | $267 | ||
| July 2026 | $289 | $265 | Best | |
| August 2026 | $304 | $291 | Peak |
Departing on Tuesday offers the lowest average fares at $284. Friday departures are the most expensive at $303, a difference of $19.
The best time to fly is July. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Houston to Mexico City is July, with average round-trip fares around $289. The lowest fare found in July is $265.
Tuesday departures are the cheapest, averaging $284 round trip. The most expensive day is Friday at $303.
Based on current pricing trends, booking for July travel offers the best value. Avoid August if possible, as fares average $304 compared to $289 in the cheapest month. June is a solid middle-ground option at $299.
Flying in July instead of August can save you approximately $15 per round trip. The cheapest month averages $289 while the most expensive averages $304.
Airlines, flight times, price calendar, and more for Houston to Mexico City
View IAH → MEX Details