Yes. US to Europe: ~$211–246 per bike, each way. Within Europe: ~$164–234 per bike, each way.
How much does Turkish Airlines charge for a bike between the US and Europe?
~$211–246 per bike, each way. Bike fee: €180–210 (about $211–246) each way between the US and Europe via Istanbul, depending on the country. Bikes don't count toward your bag allowance.
How much does Turkish Airlines charge for a bike within Europe?
~$164–234 per bike, each way. Bike fee via Istanbul: €140–200 (about $164–234) each way, depending on the countries. Bikes don't count toward your bag allowance.