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

Return flights

08 Aug - 10 Aug	Volaris El Salvador
08 Aug - 11 Aug	Volaris El Salvador
07 Aug - 29 Aug	Volaris El Salvador
10 Aug - 17 Aug	Volaris El Salvador
06 Aug - 11 Aug	Volaris El Salvador
06 Aug - 10 Aug	Volaris El Salvador
05 Aug - 10 Aug	Volaris El Salvador
07 Aug - 10 Aug	Volaris El Salvador
03 Aug - 17 Aug	Volaris El Salvador
02 Aug - 17 Aug	Volaris El Salvador
25 Aug - 01 Sep	Avianca
26 Aug - 02 Sep	Avianca
26 Aug - 02 Sep	Avianca	direct

Also check the deals for one-way flights from Washington 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 Washington to Guatemala City in August from $258

Return flights