If you have CIMB my bank account, very easy to open CIMB sg account. All can be done via online.

If you don't have CIMB, you can use Maybank. Difference is CIMB sg does not require lockup of sgd500 while Maybank sg needs you to lock up sgd500 or else there's a monthly fall below fees of sgd2.00/month.

Another difference is Maybank sg application better to do it via certain Maybank branch in Malaysia.

So actually you don't need to fly there. You fly there only if you want pure sg bank account and not a Malaysian bank which operate in Singapore. But if you want convenient, just pick either CIMB or Maybank sg as your sg bank.

Btw, you need to choose where you want to invest. If you don't have enough money, choose your investment wisely. If you have lots of money, no issue. A lesson I learned. I was too diversified. Everything also I want to buy.