Train from Frankfurt-amsterdam

Ask the man in seat 61 he knows all.

You can also use a website only for research and then shop for price. Trainline for example.

The German rail company is Deutche Bahn. Go to https://int.bahn.de/en for schedules and prices. Generally, the fastest, direct trains will be more expensive than the slower trains that require multiple connections.

I’d go by plane

I’d go by plane

By the time you've traveled to the airport, arrived 2 hours before your flight, flown, then deplaned and taken the train into A'dam, you could have arrived by train. In more comfort. Without the hassle.

Train wins over plane easily, for such a short trip.
Get your ticket on Deutsche Bahn.

possibly looking to fly into Frankfurt and take speed train to Amsterdam
( from another post by OP)

If OP is already at the airport, flying may not be a bad choice; doing it as a separate ticket does pose some risk.

The question really is, how much cheaper is it to fly to Frankfurt and then spend the time and money to get to Amsterdam, vs just flying to Amsterdam? Don't forget, your time has value.

I would fly, and I have. You don't need to get there two hours early, it's a local flight. 65 minutes in an airplane beats 4 hours on a train every time. And flying is cheaper.

Download the DB app. Very easy to book from here. Assuming you are departing from the Frankfurt airport, the fastest route requires no transfers and terminates at the central station. It's under 4 hours travel time. The leg to Cologne is very fast. It's slower going from there but is not an unpleasant trip. My unofficial rule is if it's around 4 hours or less, the train experience beats the plane even if a tad longer. Pros include not waiting around in an airport, typically terminates where you want to be instead of having to taxi from the airport, more comfortable.

Thanks for all the info

after having gone in the opposite direction last year with endless delays and packed trains I would recommend flying. That’s what I plan to do on my upcoming trip this year, land in Amsterdam, then connecting flight to Frankfurt.