Scroll through the results for cheap flights to Mulu in Malaysia. To get the best deal, we'd advise booking in advance, particularly if you want to fly with a specific airline. Check your dates and see.
Flexible on dates? Conducting your search by month allows you to compare prices to Mulu throughout the year. Accommodation prices will also be higher at this time of year.
So, if the flights to Mulu don't work for you, you could always try searching for flights to other airports in Malaysia.
For even more options, check what other airports you could fly to Mulu from. You might be able to make a saving by going from a different airport or city.