But the security rules mean that a number of items are prohibited from being carried in hand luggage.
So before your next vacation, be sure to check if anything you pack breaks any flight laws.
The following item is prohibited from hand luggage on all or some airlines.
The UK government website states that frozen breast milk is not allowed on flights.
The statement read: “When traveling with a child, you are allowed to take sufficient baby food, baby formula and sterile water during the flight. There is no legal limit on the amount you can carry but check with the airport before you travel.
“You can carry breast milk in your hand luggage even if you are not traveling with a child, but you cannot carry frozen breast milk in your hand luggage.
“Individual packages of breast milk should not contain more than 2,000ml. Each container will have to be checked at the security point. Airport staff may need to open the containers to check the fluids.”
Cooling gel packs are also allowed to keep any breast milk, formula, or baby food refrigerated.
Babies often struggle to sleep on planes, but there are travel accessories that help, like hammocks and boxes that extend the seat.
However, accessories that turn seats into beds are prohibited by some airlines such as Qantas and British Airways.
“No-allowed devices include, but are not limited to, child seat extenders, infant swings, inflatable footrests, and devices that attach to the seat to restrict movement or to support the leg (bed boxes),” British Airways explained.
According to the Qantas website, the ban includes: “Aircraft travel accessories and devices that are attached to aircraft seats, inserted between seats, or block access to seat rows or aisles.
Examples of accessories prohibited on board include, but are not limited to, inflatable cubes, “bed boxes” and “leg hammocks.”
However, other airlines such as Virgin Atlantic allow certain products.
According to the Virgin Atlantic website Trunkie/Bedbox that extends the bench seat for children to sleep, the Plane Pal sign of inflatable pillows for children is allowed on their plane, as long as the child is in the middle seat or in the window.
But it should be carried in place of a cabin bag.
According to the UK government website, you are allowed to carry essential medicines over 100ml, including liquid food items and inhalers.
However, you will need supporting documentation from a relevant medical professional (eg a letter from your doctor or a copy of your prescription).
There are restrictions though – for example, inhalers are allowed in hand luggage but you must pack spare refills in your checked baggage, according to Gatwick Airport.
Epi-pens, although they are also allowed, must be accompanied by a doctor’s note.
Thomas Cook warns that this may be important to some foreign countries or you may end up “interrogated by local security or customs.”
Games that imitate weapons are prohibited – even if they are unlikely to cause any injury.
They can also get ticked on security checks, especially when passing through X-ray machines.
Any toy that could resemble a weapon should be put on hold, as the government advises that “imitative explosive devices (including replica or model weapons) should be banned”.
For example, in 2011 an airport banned a 3-inch rifle for a toy soldier from the plane because it was considered a security threat.
Snow globes are harmless souvenirs but you should not try to take them on a flight.
All because it is impossible for airport security to know how much liquid there is.
Earlier this year, a former airport worker revealed secret tricks that make traveling with kids a lot easier than parents never know.
Entertainment essentials and how to avoid travel anxiety are included.
This mom has revealed the best flight to book when traveling with kids.