August is the cheapest month to fly this route, with average fares around $449 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $497 | $458 | ||
| June 2026 | $523 | $444 | Peak | |
| July 2026 | $509 | $445 | ||
| August 2026 | $449 | $366 | Best |
Departing on Saturday offers the lowest average fares at $478. Sunday departures are the most expensive at $527, a difference of $49.
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 Detroit to Mexico City is August, with average round-trip fares around $449. The lowest fare found in August is $366.
Saturday departures are the cheapest, averaging $478 round trip. The most expensive day is Sunday at $527.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $523 compared to $449 in the cheapest month. July is a solid middle-ground option at $509.
Flying in August instead of June can save you approximately $74 per round trip. The cheapest month averages $449 while the most expensive averages $523.
Airlines, flight times, price calendar, and more for Detroit to Mexico City
View DTW → MEX Details