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

Return flights

22 Sep - 30 Sep	Avianca
11 Sep - 14 Sep	Avianca
20 Sep - 27 Sep	Avianca
25 Sep - 29 Sep	Avianca
23 Sep - 30 Sep	Avianca
11 Sep - 17 Sep	Avianca
02 Sep - 23 Sep	Copa
25 Sep - 30 Sep	Avianca
03 Sep - 24 Sep	Copa
10 Sep - 03 Oct	Copa
09 Sep - 16 Sep	United
09 Sep - 07 Oct	United

Also check the deals for one-way flights from Miami to Guatemala City in September.

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 September from 129€

Return flights