No problem with kerosene at all in the Netherlands, though. Travel agencies are not preparing for shortages.
Let's keep this for future reference. https://www.nu.nl/economie/6391409/nederlandse-toerist-kiest-andere-bestemmingen-om-oorlog-midden-oosten.html

Carriers using these Italian airports are being instructed to arrive with fuller tanks or to refuel elsewhere on the network. While the measures stop short of a full shutdown, they significantly reduce flexibility for airlines.
And help to spread the problem over Europe.
https://www.thetraveler.org/fuel-squeeze-at-italian-airports-rattles-european-skies/

Air France-KLM's stock price is already down 32% since Trump and Netanyahu started their war.
You can buy the whole thing for €2.3 billion now.

The UK received its last tanker of jet fuel from the Middle East on Friday. Nothing more on its way now.
Yes, there are other sources, too. And lots of demand for those.
https://www.ft.com/content/19f155b1-8b12-491a-bbc5-a3bdb2a2e607?syn-25a6b1a6=1

The last tanker of jet fuel from the Middle East for the Netherlands arrived at the Port of Rotterdam anchor zone yesterday. It left Kuwait on 23 February, before Trump and Netanyahu started their war.
Nothing on its way now
https://www.bnr.nl/nieuws/economie/10597905/laatste-kerosinetanker-op-weg-naar-rotterdam-als-het-op-is-kun-je-niet-meer-vliegen