REUTERS/Charles Platiau
An Airbus A-380 that departed from Los Angeles landed in Salt Lake City, where passengers and crew were being deplaned and transferred to the terminal, an FAA spokesman said.
A separate flight that left Dulles International Airport outside Washington was diverted to Halifax International Airport in Nova Scotia also because of an unspecified security concern, the FAA said.
According to Air France, the bomb threats were made by phone anonymously after the planes had taken off. Both planes have landed and passengers disembarked.
Here's Air France's statement on the planes:
Statement from Air France on "bomb scare" incidents involving two Paris-bound flights; both have landed safely. pic.twitter.com/ApdeOHdooP
"Several law enforcement agencies are working in concert, following established protocol, to determine the nature of the threats which caused the aircraft to divert," FBI Special Agent Todd Palmer of the Salt Lake City division told CNN.
It is not yet clear who made the bomb threat.
Air France flight from LAX to Paris diverted to #SLC due to security issue. FBI, Airport PD on scene. Operations are not effected.
- SaltLakeCityAirport (@slcairport) November 18, 2015Radar shows two Air France flights bound for Paris from the U.S. have been diverted; one to Halifax, one to SLC. pic.twitter.com/RQMGHMPA9b
- Brad Heath (@bradheath) November 18, 2015This post will be updated as more information is available.