Source: Schema.org v30.1 vocabulary. Official boardingGroup property definition.
What does boardingGroup mean?
The airline-specific indicator of boarding order / preference.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status