I check out reversebeacon.net. e.g. Make a custom filter, "DX = Continent:Europe", "DE = Continent:North America", and check the 10M and 12M boxes.
Pickings will be pretty sparse this summer. SFI is plummeting and getting to EU will be hard. Southern hemisphere routes, like to South America or to VK/ZL, will be more likely (if you need those), and I was working VK's and ZL's just a few weekends ago (Admittedly SFI was a bit higher then.)