Arriving in Singapore from San Francisco, they expecting to disembark when they were instructed to hold their horses.
The plane was diverted and hidden away at a remote part of the tarmac, as authorities investigated a bomb threat.
That took place at around 12pm yesterday (22 Nov).
At about 2pm, they were allowed to leave.
Checks on the plane and its cargo turned up no explosives.
Police are investigating the source of the bomb threat, and have issued a stern warning against people engaging in such hoaxes or spreading false information.
The incident was especially worrying as it came after multiple terrorist attacks in Paris last weekend, where ISIS terrorists killed over 120 people and injured at least 400 others.
In a similar incident yesterday, a Turkish Airlines flight travelling from New York to Istanbul was diverted to Halifax in Canada.
No explosives were found on the plane or passengers as well.