AirHint found the following cheapest return flights from San Salvador (SAL) to Guatemala City (GUA) in December 2025 (see full year).
Return flights
| 26 Dec - 29 Dec | Avianca | direct | |
| 30 Dec - 01 Jan | Avianca | ||
| 26 Dec - 26 Dec | Avianca | direct | |
| 28 Dec - 28 Dec | Avianca | direct | |
| 23 Dec - 25 Dec | Avianca | direct | |
| 29 Dec - 29 Dec | Avianca | direct |
Also check the deals for one-way flights from San Salvador to Guatemala City in December.
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