August is the cheapest month to fly this route, with average fares around $405 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $497 | $458 | Peak | |
| June 2026 | $455 | $366 | ||
| July 2026 | $439 | $366 | ||
| August 2026 | $405 | $366 | Best |
Departing on Wednesday offers the lowest average fares at $397. Sunday departures are the most expensive at $476, a difference of $79.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Atlanta to Mexico City is August, with average round-trip fares around $405. The lowest fare found in August is $366.
Wednesday departures are the cheapest, averaging $397 round trip. The most expensive day is Sunday at $476.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $497 compared to $405 in the cheapest month. June is a solid middle-ground option at $455.
Flying in August instead of May can save you approximately $92 per round trip. The cheapest month averages $405 while the most expensive averages $497.
Airlines, flight times, price calendar, and more for Atlanta to Mexico City
View ATL → MEX Details