July is the cheapest month to fly this route, with average fares around $315 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $396 | $342 | Peak | |
| June 2026 | $317 | $235 | ||
| July 2026 | $315 | $235 | Best | |
| August 2026 | $329 | $290 |
Departing on Sunday offers the lowest average fares at $310. Friday departures are the most expensive at $351, a difference of $41.
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 Dallas to Cancun is July, with average round-trip fares around $315. The lowest fare found in July is $235.
Sunday departures are the cheapest, averaging $310 round trip. The most expensive day is Friday at $351.
Based on current pricing trends, booking for July travel offers the best value. Avoid May if possible, as fares average $396 compared to $315 in the cheapest month. August is a solid middle-ground option at $329.
Flying in July instead of May can save you approximately $81 per round trip. The cheapest month averages $315 while the most expensive averages $396.
Airlines, flight times, price calendar, and more for Dallas to Cancun
View DFW → CUN Details