Singapore Airlines (7401 KrisFlyer Miles) and Swiss (6140 Miles and More) are both Star Alliance.
So 1 or both are likely to expire before you get enough ff miles to use.
All your 3 ffp's have a hard expiry of the ff miles. Use them or loose them
FF miles are a byproduct of flying and not a the reason to select flights
Last edited by Mwenenzi; May 13, 2019 at 4:41 pm