Southwest’s change follows the tightening of rules on carrying lithium batteries on planes by several Asian airlines, including Thai Airways and Singapore Airlines.

Southwest Airlines is implementing a rule later this month that will require flyers who use portable chargers and batteries while traveling on their flights to keep the electronics in plain sight, cit...

Earlier this year, a fire aboard an Air Busan flight waiting to depart from South Korea forced the evacuation of all 176 passengers after flames burned through the aircraft’s roof.