https://www.ynetnews.com/travel/article/s11kobddlx
Israelis search for niche holiday spots amid rising antisemitism and according to the article it is affecting availability and cost in some locations. So if these are among your destinations you might want to book a little earlier especially if you are overlapping a religious holiday.
Eastern European countries like Hungary, the Czech Republic and Romania, along with Thailand, Georgia, Azerbaijan and Dubai, are seen as friendlier, unlike Western Europe. Other popular destinations include Bucharest, Warsaw and Montenegro.
The surge in demand is driving up prices. In Eastern Europe, costs for peak dates like Sukkot have risen 15-20% over the past two years.
Related and pretty interesting:
https://www.jpost.com/opinion/article-862919
https://yeahthatskosher.com/2024/12/travel-smart-israels-guidelines-for-jews-and-israelis-in-europe/
https://www.totallyjewishtravel.com/blog/8-kosher-summer-destinations-eastern-europe