Disposable and Zippo lighters without fuel are allowed in checked bags. Lighters with fuel are prohibited in checked bags, unless they adhere to the Department of Transportation exemption, which allows up to two fueled lighters if properly enclosed in a DOT approved case.
Lighters (Disposable and Zippo)
Carry On Bags:
Yes
Checked Bags:
Yes (Special Instructions)
The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.