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

One-Way flights

03 Aug	Spirit Airlines	direct
31 Aug	Spirit Airlines	direct
05 Aug	Spirit Airlines	direct
30 Aug	Spirit Airlines	direct
08 Aug	Spirit Airlines
11 Aug	Spirit Airlines
22 Aug	Spirit Airlines
18 Aug	Spirit Airlines
27 Aug	Spirit Airlines
02 Aug	Spirit 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 $89

One-Way flights