Booking a return without knowing your return date - does it work?
I need to fly LON-SIN or LON-KUL soonish, coming back I have no idea when but more than 6 months, less than 12 months.
Fees:
LHR PSC/UK APD = £120
KUL PSC = £14
MH fares:
Cheapest return LHR-KUL fare w/3 month max validity + YQ = £438. Total with taxes = £572
Cheapest return LHR-KUL fare w/12 month max validity + YQ = £674. Total with taxes = £808
Cheapest one-way LHR-KUL fare + YQ = £250 or £370 with taxes/PSC
Cheapest one-way KUL-LHR fare (no YQ ex-KUL) = £344 or £358 with taxes
Total return cost for two one-way with taxes = £728
So two one-way tickets works out cheaper, and that's before the £100 change fee for the return, and possibly a fare increase as well.
So does it ever make sense to go for the return when you don't know your return date? Do you ever do it?