Originally Posted by JohnnyBekkestad

As TiredSoul said, pPrune might be a better place for you.
However, I’ll give you my experience since I’ve done it.
Im assuming you are trying to go from FAA to EASA, there is no quick way of doing that.
You need to take 14 written exams, ATPL theory. Each one completely worthless and based on rote memorization of the questions.
Depending on how much 121 time you have you might be able to waive the official ground school requirement and just do self studies.
Once you take the first exam, you have 12 months to do all 14.
You have 7 sits to do the 14 exams, each sit consists on 1 week period.
You can retake a failed exam once and no more than 3 total.
Try to save a sit or two for contingency. I took my 14 exams in 4 sits.
Once you are done with the ATPLs you can do flight training, CPL can be done in the US however the IR portion cannot. So that has to be done over I. Europe.
You also have to have an EASA medical, it is NOT the same as an FAA medical, if it’s an initial, it costs close to 1000$ and you might as well apply to be an astronaut for NASA. Funny thing is that my EASA medical examiner actually does the medical for the ESA.
Another thing to have in mind is that, under EASA regulations there are no such thing as a Flight Review or an IPC.
In order to keep current you need to take a check ride ever 24 months for a Commercial Single or multi. Taking one does NOT get the other one current.
And you need to take an instrument check ride once every 12 months.
If you loose currency for over 7 years, you will need to take the 14 ATPLs again.
Id say to expect about 5-8000$ for the total cost.
If you get a job in Europe, they typically pay for your recurrent training to keep your type rating and instrument rating current, thus you only need to keep your single and/or multi engine current yourself.
Im about to loose my currency, End of April it’s been 7 years since my last instrument currency. And I’m expecting about 2000$ to get recurrent again.
There is one EASA medical examiner in the US, he is based in Ormond Beach, does medical by appointment only, and it’s on Fridays. Takes about 3 hours and I believe it’s about 250$.