Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Thailand to Dortmund as you normally would.
Bangkok Suvarnabhumi
Dortmund
3 stops
29h 35mMultiple Airlines
Bangkok Suvarnabhumi
Dortmund
1 stop
16h 25mลุฟท์ฮันซ่า
Bangkok Suvarnabhumi
Dortmund
2 stops
23h 20mMultiple Airlines
For a flight from Thailand to Dortmund, you will be flying into Dortmund. Dortmund (DTM) is just 10.1 km from the centre of the city.
Yes, there are multiple flights from Thailand to Dortmund for under ฿62,200. The cheapest flight booked recently is on Multiple Airlines for just ฿62,150, but on average you can expect to pay ฿64,809.