AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Cancun (CUN) in August 2025 (see full year).

One-Way flights

05 Aug	Spirit Airlines	direct
12 Aug	Spirit Airlines	direct
23 Aug	Spirit Airlines	direct
10 Aug	Spirit Airlines	direct
06 Aug	Spirit Airlines
13 Aug	Spirit Airlines
21 Aug	Spirit Airlines	direct
30 Aug	Spirit Airlines
18 Aug	Spirit Airlines
27 Aug	American Airlines	direct

Also check the deals for return flights from Philadelphia to Cancun in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from Philadelphia to Cancun in August from $90

One-Way flights