Southeast Asian countries are finding it harder to meet their 2026 tourism targets even after a strong start to the year. Understanding why the growth is slowing helps us see how global economics and politics affect travel plans and local economies.

Vietnam recorded 19.5 million international arrivals in the first ten months of 2026, a 13.8% year‑on‑year increase. However, Martin Koerner, commercial director of Anam Group, warned that reaching the 25 million goal would require a 37.5% surge – about 5.5 million more visitors – in just the final two months, which he says is increasingly unlikely under current market conditions.

Martin Koerner, commercial director of Anam Group, said the sharp rise in global oil prices has forced airlines to add fuel surcharges, raising airfares and discouraging many travelers. At the same time, Vietnam’s key source markets weakened: South Korea sent 6.3% fewer visitors and arrivals from China grew by only 1.4%.

The University of the Thai Chamber of Commerce blamed Thailand’s 4.6% drop in arrivals – 25.5 million foreign visitors in the first ten months – on the conflict in the Middle East, volatile oil prices, and rising travel costs. In Malaysia, director‑general Mohd Amirul Rizal Abdul Rahim said the Iran war disrupts travel and threatens the country’s 47 million‑visitor target, after the nation recorded 32.2 million arrivals in the first nine months, just a 2.4% rise year‑on‑year.

Cambodia’s tourism fell sharply, with 2.46 million international visitors in the first nine months, a 43.7% drop. Cambodian Minister of Tourism Huot Hak attributed the decline to regional and global challenges, including online scam concerns, tensions along the Cambodia‑Thailand border, and conflicts in the Middle East.

The slowdown shows that even strong early‑year growth cannot offset rising travel costs and geopolitical unrest. Without lower airfares or a calmer global situation, many Southeast Asian destinations will struggle to hit their 2026 tourism targets.