Mike Rein, spokesman for Lockheed, said South Korean officials are evaluating the company's F-35 Joint Strike Fighter proposal for South Korea's 8.3 trillion won ($7 billion-plus) competition for 60 new fighter planes.
Lockheed said its F-35 planes are still under development and will not be flown by the pilots.
However, the company will give South Korean pilots access to an F-35 simulator and rides in chase planes to show the capabilities of the F-35 Lightning II, said two sources familiar with the plans.
South Korea made a similar trip to Boeing's F-15 plant in St. Louis early last month.
Dennis Muilenburg, chief executive of Boeing's defense business, said the South Korean pilots flew a prototype of the F-15 Silent Eagle on several missions.
EADS has also proposed its Eurofighter Typhoon for South Korea's fighter plane competition.