Family deals to many non-European destinations are cheaper this summer than last, as travel nerves have slowed bookings.
The city's main liquified natural gas (LNG) processing site suffered a "technical accident" in the Ras Laffan industrial zone.
Zeynab Javadli had not been in contact with any of her friends since Tuesday.
British lawyer David Haigh lost contact with Zeynab Javadli on Tuesday and the BBC has been told her home in Dubai is locked and empty.
The United Arab Emirates has denied any involvement in the civil war and says it investigates alleged links.
The country is investigating the source of the strike, which it calls a "dangerous escalation".
The UAE denied reports of the "alleged visit" and insisted relations between the two countries were not based on "unofficial arrangements".
Commentators say it will take years or even decades to repair the damage.
Shipping company Maersk says one of its US-flagged commercial vessels has successfully exited the Strait of Hormuz under US military protection.
