Singapore to Athens, Greece $358 | Berlin, Germany $411 Return on Scoot
Scoot are offering some cheap airfares to Berlin and Athens. This Athens deal is the cheapest ever seen on CCL by $66 and Berlin is the cheapest ever by $110!. Fares don't include bags, meals and seat selection. Scattered limited dates in March and April 2019 for ATH, May only for TXL.
Use the following Google Flights links or have a play around on Scoot's site:
So for example to Athens:
Base Fare: $358
Bags: $120 ($60 each way)
Bags & Meals: $212 ($106 each way)
Keep in mind the flight to Athens leaves at 3AM (12:25AM for Berlin) from Singapore so perhaps don't need a meal. Customise it as needed.