July is the cheapest month to fly this route, with average fares around $364 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $397 | $356 | Peak | |
| June 2026 | $371 | $356 | ||
| July 2026 | $364 | $356 | Best | |
| August 2026 | $369 | $356 |
Departing on Tuesday offers the lowest average fares at $357. Friday departures are the most expensive at $386, a difference of $29.
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 Boston to Cancun is July, with average round-trip fares around $364. The lowest fare found in July is $356.
Tuesday departures are the cheapest, averaging $357 round trip. The most expensive day is Friday at $386.
Based on current pricing trends, booking for July travel offers the best value. Avoid May if possible, as fares average $397 compared to $364 in the cheapest month. June is a solid middle-ground option at $371.
Flying in July instead of May can save you approximately $33 per round trip. The cheapest month averages $364 while the most expensive averages $397.
Airlines, flight times, price calendar, and more for Boston to Cancun
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