As of March 4, 2018 I have been trying to buy YHT tickets for 4 from Konya to Istanbul for March 15, 2018. But have been getting message: “No travel solution found, try again by changing departure and arrival stations/dates” Is there some thing wrong? I was able to book other train routes like IST to Ankara to Konya but not Konya to Istanbul?
Though tickets are on sale prior to 15 days for high speed trains, only tickets until 14th of March are on sale as of today (4th of March). TCDD Tasimacilik introduced new tariff on Thursday for HSTs. That may be the reason for this irregularity and most probably, you’ll be able to buy tickets on Monday morning.