https://www.flyroyalbrunei.com/brunei/en/help-support/frequently-asked-questions/rb-upgrades/
RB Upgrades - Brunei | Royal Brunei Airlines
Apr 17, 2026 - Get answers to your frequently asked questions about RB upgrades, including what is RB upgrade, cost and benefits of RB upgrades etc.
rb upgradesbruneiroyalairlines