TOKYO -- Leading travel booking websites Rakuten Travel, Expedia and Booking.com are being investigated in Japan over possible antitrust violations, sources told Nikkei.
Booking.com also investigated for allegedly constraining hotel rates

The three travel websites face administrative penalties if a probe uncovers price-fixing or other violations. (Photo by Masayuki Terazawa)
TOKYO -- Leading travel booking websites Rakuten Travel, Expedia and Booking.com are being investigated in Japan over possible antitrust violations, sources told Nikkei.