If you miss your Brussels Airlines Flight, your booking is usually marked as a no-show, and the remaining itinerary may be cancelled automatically. Rebooking options depend on your fare type. Flexible tickets may allow same-day changes or rebooking for a small fee, while restricted fares often require purchasing a new ticket. Refunds are typically not available on non-refundable fares, though airport taxes may be reclaimable. If the missed flight was due to a delay on a connecting Brussels Airlines service, the airline may rebook you free of charge. Contact customer service immediately.