When you use Gimpo domestic airport, you do not need to worry too much about what to carry compared to international flight. But there are still things you should be careful.
So here is the list of things you can carry and can’t at Gimpo Domestic Airport .
Gimpo Domestic Airport Liquid Rule
When you go to Jeju island from Gimpo airport, there is no limit to liquid. So you can even bring your water bottle. 
But not all liquid is equal. You can bring unlimited alcohol that is under 24 percentage. But if it is between 24 – 70 percentage, the limit is 5 liter.
You cannot bring alcohol on the plane that is over 70 percentage.
Things You Can Carry On at Domestic Flight
- Nailclippers, fork, wine / beer opener, sawing kit
- liquid : Cosmetic products, hair dye, toothpaste
- Batteries: Calculator, Camera, Notebook, Camcorder
What Batteries Can you Carry
So most batteries are ok to carry on Domestic flights. But lithium batteries cannot be checked in (you can only carry on).
There are few products that most people don’t think of and everyday there are about 1500 cases where they catch lithium batteries on check in bags.
It can be not a big deal, but it can also lead to a fire on a plane, which can be very dangerous.
First, a lot of Koreans have these portable fans, and if you do have one, you should not check in.
You can carry on the plane, but cannot check it.
Also portable chargers use lithium batteries, so make sure to carry on the plane (Do not check in your portable batteries).
These are all the products that use lithium battery :
- E-Lighter
- E-cigs
- Portable Fan
- External Charger
- LED Flash Lights
- Watch batteries
- Drones
Your watch or camera have lithium batteries but if it is already inside the electronics, it is fine to check in.
There are other things that you cannot carry on or check in like guns and bomb, but I don’t think I need to write that down as it is common sense.
You can also find more information on their website.
If there is any questions, please let me know below comment.