Provided the lack of roads in Mulu National Park, rivers are the main ways of communication. skilful drivers will take you to in small canoes to all the places of interest.
Beware of the fact that, if you travel during the dry season and the water level of the river is not very high, you may have to get off the boat and push it against the flow.
If you have limited time, the only choice for reaching Mulu is by plane.
There is a small airport not far from the Mulu Royal Resort. All flights are operated by small jets and may be cancelled for bad weather reasons.
I flew into Miri from Johor Bahru on Air Asia. This was convenient for me because I was coming from Singapore and the fare was less than 100 ringgit. They have promotions from time to time and mid-week seems to be the time to get the cheapest fares. It's definitely a no frills airline but I never had a problem with them. They fly into Miri three times daily from Kuala Lumpur and once every Sunday, Monday, Wednesday and Friday from Johor Bahru.
Once at the airport, there are official taxis to the city proper. You state your destination at the desk by the kerb and they give you a voucher. It's all fairly simple and user-friendly.
If I'm doing a lot of short trips in one day or doing a bit of sightseeing, I like to get a private driver. I found this fellow to be decent and helpful. He did airport transfers for less than the official price (14 ringgit) and got up at 5:30am to take me to the bus stop so that I could go to Brunei (7 ringgit). He was also very knowledgable about the area and gave me plenty of touring options without being pushy. He was very talkative and obviously enjoyed guiding tourists around. The best part probably was that he knew where to find the cheapest of everything - unbelievable. For once I was able to outdo the backpackers in the hostel common room as everyone exchanged stories!
If you want to go to Miri from Brunei , you just need your own car or just use buses. For bus, you use the bus that stated Brunei to Miri bus. It just takes for 3 hours to reach they. You can use plane and it take for few minutes to reach there ( for about 2 minutes).
i suggest you should travel by car or bus because you can see a lot such many types of local houses and many more.
We have good buses with air -con(in town), taxis or you can rent a car. Buses are easy to use.. located in the centre of the town.
The map shows where are the hotels, inns, banks,shopping complexs and the bus station.
Although there are 4 buses leaving from Miri, you should take the morning ones to ensure you get connection to Brunei.
Taxi from Miri airport to city costs RM22 (Apr 2009). There is a bus service, but you will have no idea how long you need to wait.
I guess this is the only way to go Mulu. We are on a 20 person plane take around 30 min to reach Mulu. The prices is RM179 round trip.
It is possible to travel to Mulu by a combination of bus and boat.
This is time consuming and difficult.
Malaysia Airlines has Twin Otter flights between Miri and Mulu.
It is best to book early because these flight are most always full.