A few weeks ago I booked a return journey with KLM via their website. I am leaving from and returning to the EU. Today I noticed through their app that first leg (of three) of the return journey has been cancelled and I have been moved to a much earlier flight (~10:30 am instead of ~5:30 pm) with a extra 7 hours wait at that airport. This first leg is with a partner airline.
I am not aware of having received any notification of the change, if that's relevant. The outbound flight is in about 3 weeks and the return flight in just over 6.
Before I contact them, what are my rights? It feels unreasonable to totally change my flight like that after purchasing the ticket.
I see there is a flight from another airline (which I don't think has any partnership with KLM) for approximately the correct time. Have I any right to that?
KLM offer another route through a different airport at approximately the same time as the original. Have I any right to that?
I am specifically asking about my rights (i.e. what I can insist on). Obviously I will phone up and ask nicely! I am aware I can likely ask for a refund, but rebooking would be way more than I paid at the time.