The itinerary of these groups, which are mostly comprised of pilgrims, includes visits to Jerusalem's holy sites, which are currently under the threat of a missile attack.
According to Shmuel Marom, chairman of the Israel Incoming Tour Operators Association, "In recent days we've seen tourists who are already in Israel asking to cut their stay short, but the most concerning issue is the cancelations of tourist groups.
"We are talking about cancelations for the next two-three months, including groups that were supposed to arrive on Christmas. About 15% of tourists in organized groups have canceled. This is a bad situation. We cannot plan tourism with such uncertainty."
Meanwhile, planes departing from and arriving at Ben-Gurion Airport have been diverted from their regular take off and landing routes in order to avoid being hit while the Iron Dome is intercepting rockets over central Israel, an IDF officer said Monday.
The fighting has also led to changes in flight schedules. Evening flights from Amsterdam and Paris to Tel Aviv are prolonged by two and a half hours as the Air France and KLM airlines have decided to make a stopover in Larnaca, Cyprus to replace their aircrews.
The shipping industry has been affected by the situation as well: Queen Elizabeth 2 and Costa Pacifica, two cruise ships carrying more than 6,000 passengers, announced that they would not dock in Israel this week.
Yoav Zitun contributed to this report