Our top picks for cheap travel hair dryers all have one thing in common - a dual voltage switch. There are a bunch of other cheap options in our comparison table that don't have this feature, and frankly it makes them hard to recommend. Anko, Remington, and Baybliss all have reasonably priced devices that will work no matter where you are in the world.
Out of these the Baybliss Pro Bambino stands out the most due to its super lightweight design, and its inclusion of negative ionic technology. The downside is that it doesn't fold down, and has a lower wattage than the rest. This lower wattage should be fine for most hair types, but if you've got curly or coarse hair then the Remington may be a better point of call.
With 2000W of power, the Remington Jet Setter is a bit too powerful than we would recommend for most people - hence its lower score. However, if you have hair that needs higher heats then it will likely be a better option. At 444g it isn't the lightest travel dryer, but it will probably still use up less of your baggage allowance than your home hair dryer.
Of course if price is your main consideration, you can't go past a good Kmart find. The Anko Travel Hair Dryer mostly loses out due to having no ceramic heating elements, and Kmart not disclosing the weight of the device. Generally Anko products are quite heavy (think 1kg for a normal hair dryer heavy), so we would expect that this is the same deal. Without a ceramic element it will also be harsher on your hair. Still if you've got naturally straight hair and are looking to save some money, this will be the best cheap option for you.