1. able to be boarded; suitable or accessible for boarding
Usage: commonly used in transportation and sports contexts
2. suitable for boarding as a guest; offering accommodations
Usage: chiefly historical or regional

Examples

• The airline announced that all flights were boardable starting at 2 p.m.
• The waves today are boardable for experienced surfers.
• The ship became boardable only after the storm passed.
• This mountain is boardable in winter for snowboarders.
• The damaged aircraft was no longer boardable until repairs were completed.