引用：
https://tinyurl.com/unk6boc
3.2. Right to reimbursement or re-routing
In the case of a flight cancellation by the airlines (no matter what the
cause is), Article 5 obliges the operating air carrier to offer the
passengers the choice among:
a) reimbursement (refund);
b) re-routing at the earliest opportunity,or
c) re-routing at a later date at the passenger’s convenience.
Regarding reimbursement, in cases where the passenger books the outbound
flight and the return flight separately and the outbound flight is cancelled,
the passenger is only entitled to reimbursement of the cancelled flight, i.e.
here the outbound flight.
However, if the outbound flight and the return flight are part of the same
booking, even if operated by different air carriers, passengers should be
offered two options if the outbound flight is cancelled: to be reimbursed for
the whole ticket (i.e. both flights) or to be re-routed on another flight for
the outbound flight (Interpretative Guidelines, Point 4.2).
翻译：
欧盟那边有了新的规定
可退款
可改期(最近的日期)
可改期(依乘客方便)
我想应该里程票可以期待免补avios差额和365天改票限制