The airline industry and related exchange traded fund are hitting some turbulence, but the sector outlook improves later this year.

The U.S. Global Jets ETF (NYSEArca: JETS), which tracks players in the global airline industry, dipped 2.9% Monday but rose 1.2% over the past month.

Along with mirroring the market sell-off in response to the Greece volatility, Airline stocks were further pressured after the targeted attack on the resort town of Sousse in Tunisia, the second attack on tourists in the country over recent months.

Consequently, European tour operators and airline stocks tumbled as cancellations mounted, reports David Cogswell for TravelPulse. However, while the attack tripped up the travel industry in Europe, the effects in the U.S. were less pronounced.

JETS includes a 76.4% tilt toward U.S. companies, along with 3.4% U.K., 2.3% Ireland, 1.1% Germany and 1.1% Greece.

Looking ahead, Cowen’s Helane Becker and team are waiting on Thursday’s traffic update from Delta Air Lines (NYSE: DAL) and the rest of the airlines will give guidance next week, reports Ben Levisohn for Barron’s.

“We expect similar trends in June as we saw in May, with load factors continuing to slip with the international segment leading load factors lower,” Cowen analysts said. “Given the difficult weather in late June we believe there is some upside to June PRASM expectations but are not expecting much in the way of significant improvement from previous guidance.”