Italy high speed rail inventory joins global airline systems under code 9B

Italian high-speed rail is moving into airline booking channels, letting travelers stitch a Rome-Milan Italo leg onto an international flight under one ticket, one booking code and one set of passenger-rights rules.

One ticket, one code, one identity check

Italo's intermodal contract of carriage took effect June 23, 2025 and governs how flight-plus-rail itineraries work in practice. The rail segment sits on the same booking code as the flight, with a fixed route, date, time and assigned seat printed on the ticket.

The ticket is nominative. The name must match a valid ID and passengers should expect the same document check onboard that Italo runs on any standalone fare. Tickets can be purchased through Italo's website, Pronto Italo, station counters, self-service machines, travel agencies and, in limited cases, onboard staff, up to three minutes before the first segment departs.

Distribution through airline systems widened in July 2026, when AccesRail added Italo inventory to global distribution systems under carrier code 9B and BSP stock 450. That means travel agents and airline retailing platforms can now sell the rail leg the same way they sell a codeshare flight. It builds on the February 2023 memorandum between ITA Airways and the Ferrovie dello Stato Group covering integrated train-air tickets, shared loyalty and common digital platforms.

What travelers should actually do

Book the rail leg together with the flight when the itinerary allows it. A single intermodal booking code means one point of contact if the inbound flight is late, rather than a forfeited Italo fare bought separately on a non-refundable promo. Refunds and changes still follow the specific commercial fare purchased, so cheaper Italo buckets carry the same deductions they always have.

Two practical notes for foreign travelers. Invoice requests must be filed by 11 p.m. on the day of purchase through Italo Assistenza. And the airport pairings that benefit most run through Rome, Milan, Florence, Bologna, Venice and Naples, the corridors already covered by Italo's high-speed network and worth checking against any longer stay in Italy that involves multi-city routing.