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

Return flights

17 Sep - 20 Sep	Avianca	direct
24 Sep - 29 Sep	Avianca
17 Sep - 21 Sep	Avianca	direct
26 Sep - 29 Sep	Avianca	direct
18 Sep - 21 Sep	Avianca
24 Sep - 28 Sep	Avianca
25 Sep - 29 Sep	Avianca
10 Sep - 14 Sep	Copa
11 Sep - 18 Sep	Copa
07 Sep - 22 Oct	Copa
07 Sep - 22 Oct	Avianca	direct

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 144€

Return flights