AirHint found the following cheapest return flights from Miami (MIA) to Guatemala City (GUA) in August 2025 (see full year).

Return flights

04 Aug - 14 Aug	Avianca
05 Aug - 31 Aug	Avianca
06 Aug - 31 Aug	Avianca
21 Aug - 29 Aug	Avianca	direct
19 Aug - 27 Aug	Avianca	direct
06 Aug - 10 Aug	Avianca	direct
06 Aug - 13 Aug	Avianca	direct
12 Aug - 21 Aug	Avianca	direct
04 Aug - 13 Aug	Avianca	direct
05 Aug - 12 Aug	Avianca	direct
06 Aug - 02 Sep	Avianca	direct

Also check the deals for one-way flights from Miami to Guatemala City 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 return flights from Miami to Guatemala City in August from $95

Return flights