Police officers stand guard around the Zaventem Airport after two explosions went off in Brussels, Belgium on March 22, 2016.

Stocks in the tourism sector fell Tuesday as a result of the terror attacks in Brussels, but the decline will only be short term, according to investment experts.

The Euro Stoxx 600 travel and leisure sector slipped 1.9 percent by Tuesday midday and was the worst performer across the regional benchmarks. Ryanair shares fell 2.9 percent, Air France shares lost 4 percent and was down 2.5 percent. This came as major airlines cancelled flights from Brussels after the blasts.