Jetstar is again running the same promotion – Pay to go and return for free on flights out of Singapore (if you’re a Tigerair fan check here for their offer). You still have to pay for taxes/fees but for longer flights this could be a good saving. The offer is available from now until the 18th of July, with the travel dates mixed. This is the same as the promotion that’s already been run this year and last.
When you go through and book your flights using the offer page the return flight should come out as $S0, but you’ll still pay the fees and taxes and on my dummy booking to Melbourne they were $S90, but the saving compared to a straight booking was around $S300. There are plenty of short and long haul destinations.
The offer isn’t as good for short-haul flights, like Singapore to Kuala Lumpur as the fees and taxes make up a greater proportion of the fare, but for medium to long haul they could offer a saving. Note all the other usual extra charges are not changed by the offer – the discount applies to the airfare only.
Here is the link again: http://www.jetstar.com/sg/en/special-offers/return-for-free