The sudden collapse last month of one of Europe's biggest travel groups, Thomas Cook, ruined the holidays of 600,000 stranded tourists.
Hundreds of thousands more had trips booked when the news was announced.
But for parts of Spain's tourist sector, Thomas Cook's demise is also an existential threat.
The economic future of industry workers and staff at Thomas Cook's local suppliers and subsidiaries is at stake.
The Spanish Confederation of Hotels and Tourist Accommodation has said that 1.3 million autumn and winter visitors will be unable to fly into Spanish destinations.
This will result, it says, in the shutting down of at least 500 hotels, generating losses to the tourism sector running into the hundreds of millions of euros.
Spain's government has announced a package of measures worth €300m (£260m; $330m), including emergency credit lines and a reduction in airport fees, particularly for hubs in the Balearic and Canary islands, plus plans to spend €500m in improving tourism infrastructure.