RAIL Plus is offering 50% off companion fares on select Belmond Eastern and Oriental Express departures.
The deal amounts to savings of up to $2,000 and applies to certain Mar and Apr departures and travel between Sep-Dec.
The journey from Singapore to Bangkok is a three-day adventure while the Bangkok to Singapore option is four days in length.
Space is limited and bookings are based on twin share in the Pullman and State Cabins only.
Book by 25 Apr using the promotional code EC50.