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With air tickets from Phnom Penh back to Singapore costing around 4 times the price than that of those departing from Ho Chi Minh City, I opted to take the cheaper option, which also gives me a bonus Vietnam visit. This is turning into a strange yet logical ASEAN cross-border tour involving Singapore, Malaysia, Cambodia and Vietnam.
Giant Ibis is one of the more reliable bus operators in Cambodia. Having experienced what it’s like to skimp on a little bit of money for tickets the last time I did the reverse route (and the contrast when using Giant Ibis to Siem Reap), I decided just to top up a little bit more for the bus ticket and cross over to Vietnam without much worries or hassle.