15Below, a Brighton company backed by the private equity firm LDC, runs the notification platform airlines use to tell passengers about delays and disruption. Ryanair has been a customer since 2002.
Founded in 2000, the company has 51 to 200 staff. Its core platform covers disruption alerts, journey messaging before departure and an always-on service for IT outages; it is rules-based automation rather than AI. The AI line arrived in July 2025 with the purchase of Airport AI, whose conversational platform is used at more than 80 airports including London Gatwick (LGW).
Ryanair sends more than 50 million notifications a year through the platform, and British Airways, Cathay Pacific, Lufthansa and SWISS are also recorded as users. Scale figures such as more than 150 airlines and 1.8 million notifications a day, and the 97 per cent automation rate claimed for Airport AI, are the company's own.
Ryanair · 15Below
Ryanair sends more than 50 million personalised notifications a year through 15below, the vendor says in a case study.
The relationship goes back about two decades. Ryanair was 15below's first customer, and in October 2022 the two marked 20 years together with a contract extension, Travel Daily Media reported on 6 October 2022.
British Airways · 15Below
During the Heathrow shutdown, British Airways alone sent more than 120,000 notifications through the 15below platform between midnight and 8am, 15below wrote in a blog post on 25 March 2025.
Lufthansa · 15Below
When disruption hits, Lufthansa Group airlines use Optimized Passenger Recovery, an Amadeus tool that re-plans affected journeys. It checks seat availability, takes account of frequent-flyer status and follows the airlines' own business rules, such as which carriers to rebook passengers on and in what order.
That is all in a Lufthansa Group factsheet dated 1 October 2024. After rebooking, the factsheet says, the tool triggers the passenger notification, including the new boarding pass, for flights of the group's airlines, among them Lufthansa, SWISS, Austrian Airlines and Brussels Airlines.
Cathay Pacific · 15Below
Cathay Pacific sends passengers automated flight messages by text and email from a notification platform developed with Amadeus and Accenture. Vivian Lo, the airline's general manager of Customer Experience and Design, told APEX in November 2019 that the platform sends pre-flight reminders seven days before departure and check-in reminders 48 hours before, with updates in between.
Cathay's current flight-messaging page says passengers are told whether a flight is on schedule, delayed by more than 15 minutes, diverted or cancelled, and members sign up once to receive messages for all their bookings. APEX also reported that a chatbot introduced alongside the platform can propose a flight change when disruption is expected, and Lo said frontline staff had been able to automate common problems such as rebooking.
Neither source describes a prediction or learning function in the messaging itself. Message volumes, take-up by channel and the platform's current suppliers were not published as of 16 October 2026.
Automated disruption management and passenger notification system that identifies affected passengers during schedule changes, cancellations, or irregular operations (IROPS) and delivers personalised communications with self-service rebooking options.
Eliminates manual, time-consuming passenger contact processes during flight disruptions; reduces inbound call centre volume; ensures accurate and timely personalised communication at scale without human error.
Automated itinerary-based notification suite covering booking confirmations, pre-departure information, check-in prompts, and day-of-travel updates.
Reduces passenger uncertainty throughout the travel journey; replaces manual or generic broadcast communications with personalised, timely notifications; generates ancillary revenue through targeted offers embedded in journey communications.
Resilience solution that enables airlines to continue communicating with passengers during IT outages or system failures.
Prevents passenger communication blackouts during major IT disruptions or third-party system outages; protects airline brand reputation by maintaining personalised passenger updates even when core reservation infrastructure is unavailable.
Omnichannel conversational AI SaaS platform that automates two-way interactions between airports (and, post-acquisition integration, airlines) and passengers.
Reduces airport and airline customer service labour costs by automating passenger interactions at scale; provides passengers with real-time, personalised information through preferred digital channels without requiring human agent intervention.
Profile data from the Aerostack companies register; deployment records from the verified register. Evidence grades: T1 first-party confirmation, T2 credible reporting. See Our approach for how records are graded.
Aerostack tracks AI deployments across airports and airlines, with the published evidence behind each record. Photography is real aviation imagery. Record thumbnails may show the named airport or airline; other photographs do not.