Refine Flight Guide Inventory

Server-resolved filters for one canonical Flight Guide frame.

The browser supplies preferences, never candidate inventory. Brain applies these constraints to the persisted outbound frame and the complete cached Phase-2 return market, selecting at most one checkout observation per outbound.

Server-resolved filters for one canonical Flight Guide frame.

The browser supplies preferences, never candidate inventory. Brain applies these constraints to the persisted outbound frame and the complete cached Phase-2 return market, selecting at most one checkout observation per outbound.