UK, Australian, New Zealand, South African, Canadian and US passport holders travelling to Honduras for touristic purposes do not require a visa for stays up to 90 days.
Honduras is part of the Central America-4 (CA-4) Border Control Agreement. As part of this agreement eligible foreign nationals can travel within the four countries (El Salvador, Guatemala, Honduras & Nicaragua) for a period of up to 90 days without completing entry and exit formalities at border immigration checkpoints. If travellers wish to remain in this area for more than 90 days they should research extensions. Anyone overstaying can expect a fine.
If you are a passport holder of another nationality, check Project Visa for more information on visa requirements for Honduras.