DUBAI (Reuters) - Dubai's Emirates airline on Thursday reported a record full-year profit, boosted by strong international travel demand on major routes.

The results underscore a sustained rebound in global air travel, with Emirates benefiting from a surge in demand across Asia, Europe and the Middle East.

The airline, among the world's largest by international capacity, has added new routes and increased flight frequencies amid a surge in tourism and business travel.

It carried 53.7 million passengers in the fiscal year, with seat capacity up 4%.

But escalating trade tensions and geopolitical uncertainty are clouding the outlook for the broader industry.

The Gulf carrier posted earnings of 19.1 billion dirhams ($5.2 billion) for the year ended March 31, compared with 17.2 billion dirhams a year earlier.

($1 = 3.6727 UAE dirham)