Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Balikpapan. Flights to Balikpapan from Bristol in September are about £726 on average during September, but can be found for as low as £569.
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Bristol and Balikpapan for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Bristol is roughly less than Balikpapan. You can assume this to be the case over the next 16 days.
You can imagine temperatures to be in the 31 °C range in January. The weather in Balikpapan is generally hotter than Bristol's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.