Karel Pype wrote:
This Saturday I am planning to go from Lille (France) to Barcelona (Spain) with my interrail pass. There is a change of trains in Lyon. For Lille-Lyon I can make my reservations for seats online, for Lyon-Barcelona I cannot - this needs to happen by post 6 days prior to departure (for which I am too late) or in a station.
I live in Belgium, and here the local railway service (NMBS) does not provide seat reservation for trains to Barcelona (I really don’t understand why??).
NMBS stopped selling tickets to Spain recently because they now only sell tickets that can be issued as e-tickets. Apparently, for Spain, they can't do that yet. They say they're looking for a solution but that doesn't help you now.
Karel Pype wrote:
My solution is to go on Saturday to Lille (France) early enough and hope that it still will be possible to make reservations for my train from Lyon to Barcelona on that same day.
Is there anyone who knows if this is possible? And whether I can check prior to departure whether there are still enough places free?
You can check free places here. However, pass holder seats for the TGV to Barcelona often sell out a week in advance (very few seats are available and there are very few trains) and this Saturday there are no seats left. The first train Lyon-Barcelona with available pass holder seats is on 29 March.
You can also travel via Cerbère/Portbou. You can check the timetable to Cerbère/Portbou via many sources but the rest is only available from Spanish sources (because Spanish railways don't share their complete timetable with the rest of the world). Here is the complete timetable Cerbère/Portbou - Barcelona. The SNCF trains in this PDF are regional trains that start somewhere in France and continue to Portbou; only the MD trains require a 4€ reservation that can be bought at the ticket office in Portbou or from the train conductor if the ticket office is closed.
Reservations for other TGVs are easier to get (also check availability on the Interrail website) and are also available from the NMBS ticket office, without any booking fee (Interrail charges a booking fee of 2€ per seat).
Edit: availability of pass holder seats in domestic TGVs in France should be checked here since the Interrail booking service still does not show 20€ reservations when the 10€ quota is sold out.