The leading global inventory, reservation,
and ticketing system for public transport

S3 Passenger is a fully scalable and modular web-based platform, able to handle millions of transactions per day.
Sqills supports the public transport industry in becoming the customers’ preferred mode of transport.
Powerful and innovative to exceed your needs in the years to come, flexible enough through APIs
to connect with your existing infrastructure.

With more than 34 operators across 8 countries, we are just starting to develop our community
of users as S3 Passenger is the public transport industry’s system of choice.

10.5 billion journey searches
85 ms response time
172.5 million passenger segments
89 Net promoter score

Unique Selling Points

  • Global leading SaaS reservation, inventory, ticketing, distribution product
  • Innovation and product evolution at its core, continuous product development to meet market expectations
  • New functionalities and updates constantly added (weekly releases)
  • Proven product mitigates operational risks
  • Cost efficient solution vs expensive bespoke software development and related maintenance and upgrades
  • Hands-on user training supported with over 10.000 pages of detailed functional and technical documentation
  • Powerful after sales functions such as service disruption management, rebooking, cancellations, and automated refunds help to restore customer satisfaction and save on operational costs
  • Wide range of API’s facilitating the integration in operator’s IT landscape
  • Strong customer involvement in product roadmap and prioritisation
  • Customers are pushing industry standardisation and interoperability

1 real time system 4 focus areas

  • Self-service. Provide operators' passengers easy and efficient self-services to create and change bookings

  • Best global system. Offers operators a powerful, flexible, and cutting edge-SaaS product to replace their legacy reservation systems and effectively battle for market share and customer preference

  • Collaboration. Leverage operator’s user experience and industry input in ongoing S3P innovations, to remain the public transport’s best in class and preferred product platform with several thousands out-of-the-box features and growing, every day

  • Quality, innovation, reliability and security are at the base of everything we do at Sqills

Customer Booking Flow Click to view more information Download product brochure

The S3P modules work together closely in a customer centric booking flow to guide customers through the ‘orientation’ phase. Customers select a journey with available inventory and products, choosing the price and conditions that match their preferences in the orientation phase.

This is followed by the ‘booking phase’ where the selection is converted to a reservation that can be completed or expanded with ancillary products and passenger information.

Finally the customer pays for the reservation, receives confirmation of the reservation, and their tickets are distributed. Activities are orchestrated by the S3P modules shown here:

Orientation phase

Booking phase

Retrieve travel options
Retrieve products
and prices
Store customer information (optional)
Fulfill purchased tickets
Retrieve availability
Create provisional booking + reserve seats
Register payment of
the booking
An S3 Passenger visual tour

We can imagine our comprehensive solution appears overwhelming. That's why we offer a brief visual tour to help you understand it even better...

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Constant evolution

Our industry, operator needs, and customer demands are constantly evolving, S3 Passenger can quickly adapt and evolve where needed to ensure that it meets current and future needs. Continuous deployment paired with SaaS means faster distribution, earlier access to new features to customer, smaller deliveries, and ensuring customers always have the latest bug fixes and improvements. In addition, current operators are involved in the evolution of the product through the User Story Marketplace.

Multi-channel distribution

  • The strength of S3P is represented by its core modules combined with sales and distribution API’s
  • All modules are managed through a single GUI back office environment (browser accessible), offering users an easy to use S3P platform.
  • Sales and distribution channel integration is facilitated with a standardised (and well-documented) set of API’s
  • Configurable prices, rules & conditions per distribution channel
  • Operators can create their own tailor-made (B2C) customer booking experience
  • S3P can be integrated with any client system based on web technology, mobile technology or other types of API driven (global) distribution channels such as ticket vending machines, station desk sales and B2B partner integrations.
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Latest updates
S3 Passenger is constantly evolving and improving, despite the fact that Sqills uses continuous deployment, these are a few of the key changes and highlights
Jan 2021
S3 Passenger 2021.01
Nov 2020
S3 Passenger 2020.7
Oct 2020
S3 Passenger 2020.6
Jul 2020
S3 Passenger 2020.5
Jun 2020
S3 Passenger 2020.4

Our customers

With a continuously growing list of S3 Passenger users, Sqills offers an internationally proven solution.


S3 Passenger 2021.01

The first update of the year. Especially since the introduction of the latest / greatest versioning product suite versioning approach, these updates will provide a simple overview of the most impactful changes. There are changes in the
  • S3 Passenger now offers the possibility to sell multiple consecutive journey segments that offer different products in one booking;
  • A new booking horizon setting is introduced, booking horizon for service types;
  • A sales channel can be configured that repricing operations are not considered as after-sales operations;
  • In case of upgrading from a standard class seat reservation to a first class seat reservation and adding an add-on product during an upgrade after-sales operation to a booking with multiple segments, the add-on product will be added to that segment with non-cancelled items.

S3 Passenger 2020.7

This extraordinary year has come to an end. Covid-19 has changed the world and has had its impact on S3 Passenger as well. In this last release of the year, S3 Passenger introduces, amongst other things, features for pricing period strategies, extension of carriage restriction rules and agent payment profiles.
  • The Journey Search provides better support for “Required” interactions between tariffs that both belong to main products.
  • S3P added an additional business rule to offer bundles for a given product X that exclusively consist of tariffs that do not natively belong to that product X
  • Carriage restriction rules can be inherited from an equipment template or entered manually.
  • In the tariffs screen batch edit for “can be bundled with product” functionality is supported, making it easier to configure that functionality on a large range of tariffs at once.

S3 Passenger 2020.6

The most notable feature for this new release is one of the new variants of the Journey Search API call, POST Journey search for exchange. This allows to upgrade and re-book offers for a given booking. It is possible to use Journey Search while providing routes to only see offers for provided journeys, without having to provide the Service Type.
  • New feature that that allows a single booking to either be placed on a different location on-board, even upgrading to a new class, or it can be moved to a different service entirely with user-friendly screens
  • Seat positioning logic supports multiple strategies that determine the format of the generated sequence number
  • The option to define fulfilment methods to send out communication
  • The Services screen contains the functionality to add or remove services in batch modes;

S3 Passenger 2020.5

COVID-19 continues to dominate the headlines. With the ongoing impact of Covid-19 in the travel industry Sqills had to act: S3 Passenger now offers built-in features to apply social distancing during seat allocation. This is achieved by avoiding proximity between people who do not share a household, on schedule level. When enabled, the seating algorithm will automatically apply logic to ensure that seats directly opposite or directly next to an allocated seat are never occupied by a person originating from another booking.
  • Increased work in the payment features of S3 Passenger
  • The voucher logic is improved
  • The re-accommodation functionality has been improved
  •  S3 Passenger introduces a new screen called the Schedule gaps screen

S3 Passenger 2020.4

While most people were enjoying their summer holidays S3 Passenger kept on changing and improving. Many of the notable improvements came in terms of seat selection functionality and S3 Inventory.
  • S3P introduces a new product type code “Seat Selection” that can be used in the context of seat selection logic at a specific price point
  • The option to offer bundles to passenger groups that actually mix different main products in one offer
  • More flexibility in the management of rules around which passenger fields are mandatory on a booking
  • More tariff features on S3 Inventory
  • A wide range of smaller changes and improvements