I sent my proposed itinerary for a rtw trip to LH, which responded with a provisional booking. The total mileage for the trip would be around 24,000 miles so we are talking YRWSPCL. A couple of the flights I had requested had been changed, namely, instead of traveling DEL-SIN-NRT-LAX (all on SQ) on 7-8 Aug., LH scheduled me DEL-BKK-LAX (on TG) on 9 Aug. I checked availability on seatcounter and found that in fact there was no availability in H for either 7 or 8 Aug. between DEL and LAX.

Although there is no reason I need to be in LAX on the 8th, I am not wild about hanging around DEL an extra two days. I saw availability in M on both the 7th and 8th. I'm not sure if it is worth €400 to me, but would it be possible to pay for a YRWSTAR1 even if I am flying fewer than 26,000 miles?

Secondly, how likely is it that additional seats will open up in H between now and the end of July?