Marriott CEO: Tourists shun Brussels after attacks

Marriott International CEO Arne Sorenson said Friday the hotel chain experienced "lots of cancellations" after the deadly March 22 terrorist attacks at the main airport in Brussels and a city metro station.

"Sadly, we've been through this a little bit before," Sorenson told "Squawk Box" on CNBC. "This will be a few weeks [or] maybe a couple of months, and then folks will start to come back again." That's provided no new attacks are carried out in Europe, he added.

Following the deadly November Paris terrorist attacks, bookings at Marriott hotels dropped 20 to 25 percent, Sorenson said.

In mid-January, tourists were starting to return, he reported. "By February [or] March before Brussels, we were running down high single digits from a year before."

An online poll conducted after the Brussels attacks by travel data site Skift.com found 20 percent of U.S. travelers with plans to visit Europe over the summer months canceled their bookings, and 28 percent rethinking their plans.

The State Department issued a travel alert for Europe immediately after the Brussels attacks. The advisory, set to expire June 20, warned Americans to exercise vigilance when in public places or using mass transportation.

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