9 things you shouldn’t pack in a checked bag for a flight
Before you stuff everything into your bag, check out these nine things you should never pack in checked luggage. And always check the TSA's website if you're unsure.
Lithium batteries

Lithium batteries are allowed only in carry-on baggage.
Lithium-metal (non-rechargeable) batteries are limited to two grams of lithium per battery, while lithium-ion (rechargeable) batteries are limited to 100-watt hours per battery (the average traveler easily meets these requirements).
Some smart carry-on suitcases, from brands such as Away and G-RO, have removable chargers, so if you end up needing to check your bag, don’t forget to take out the charger and carry it onto the plane.
Electronics

Large electronics with lithium batteries should be kept out of checked luggage in accordance with lithium battery restrictions.
But even electronics without lithium batteries should be carried on, too, as they’re far more likely to be damaged or potentially stolen in cargo.
Medication

Although you’ll have to put any medication over the 3.4-ounce liquid limit into checked luggage, you’ll want to keep medications on hand, because luggage does get lost or delayed.
No one wants to start their vacation with an emergency call to their doctor.
Matches and some lighters

One book of safety matches is allowed in carry-ons, while strike-anywhere matches are strictly prohibited from all luggage.
Electronic lighters are also forbidden from airplanes, but disposable and Zippo lighters without fuel are allowed in checked bags.
Travelers that have lighters with fuel can check them if they’re in a DOT-approved case.
Electronic cigarettes and vaping devices

Ever-popular e-cigarettes and vapes are banned from checked bags. Keep them in your carry-on.
Jewelry

You’re free to put as much jewelry into your checked bag as you’d like, but we recommend keeping anything valuable in a carry-on, to avoid any chance of losing it, whether permanently or temporarily.
Alcoholic beverages over 140 proof

Wine and some alcohol can be packed into checked luggage, though you’ll want to safely keep wine bottles to prevent them from breaking.
But any alcohol over 140 proof is banned. This means Everclear (190 proof), Bacardi 151 (151 proof) and Hapsburg Gold Label Premium Reserve Absinthe (179 proof) should be kept at home.
Film

Film is allowed to be checked, but because X-rays from the security scanners can potentially damage it, it’s best to pack it in your carry-on.
When going through the TSA security checkpoint, ask for the film to be scanned by hand.
Flammables and some firearm-related objects

You’d expect weapons to be banned in carry-ons, but some aren’t allowed in checked baggage either.
Gun powder and flares are prohibited, as are flammable items like fireworks, flammable paints and hand grenades.
Firearms, rifles, starter pistols and pellet guns are all allowed to be checked, but check the TSA website for the specific way they must be packed.