Stack Overflight

What Stack Overflight does

Stack Overflight (legal entity STACK OVERFOOD S.L.) is a Barcelona-headquartered SaaS company founded in 2020 that sells a modular digital software ecosystem to airlines. Its portfolio comprises five integrated products: Digital Experience (PSS-agnostic CMS, booking flow, manage booking, check-in, loyalty areas and mobile), Notification (multi-channel passenger communications across email, SMS, WhatsApp and push), Travel Marketing (AI-powered paid acquisition and lifecycle campaigns with an Agentic Optimisation Engine), Disruption Management (IROP workflow automation and a passenger self-service portal), and Data & AI (a unified data layer consolidating PSS, flight operations, revenue management, marketing, finance and customer data, with AI-driven anomaly detection and predictive signals). Architecture is headless CMS-based with real-time data pipelines and modular components, explicitly positioned as PSS-agnostic so it integrates with existing airline reservation systems.

The company is structured as a Spanish private limited company (Sociedad Limitada) with four co-founders — Xavier Brascó (CEO), Sergio Massip (CTO), Daniel Llano (COO) and Víctor Moreno (CPO) — and operates with a distributed team of 40+ engineers, product specialists and airline experts across 8 countries. It serves over 10 airline customers, with documented implementations across European, long-haul and Asia-Pacific carriers showing outcomes such as 40% disruption recovery time reduction, 70% passenger self-service adoption, 80% faster reporting cycles, 60% faster content publishing and 3x page speed improvement.

Commercially, Stack Overflight combines multi-year SaaS subscriptions (covering Digital Experience, Disruption Management, Notification, Travel Marketing, and Data & AI modules) with separate professional services for implementation, CMS migration, data platform deployment and disruption management rollout. Pricing is not publicly disclosed; sales run through an enterprise field-sales motion with demo-first engagement via an Outlook Calendar booking flow. The company operates exclusively in the airline vertical, and revenue, funding and unit-economic data are not disclosed in available sources.

Name

Stack Overflight

Legal name

STACK OVERFOOD S.L.

Website

https://stackoverflight.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

Stack Overflight is a Barcelona-based SaaS company that sells a modular digital ecosystem — CMS, disruption management, multi-channel notifications, AI-powered travel marketing, and a unified data layer — to enterprise airlines globally, serving 10 carriers with a 40+ person distributed team.

Ownership category

akta.pro rank

Headquarters

HQ city

Barcelona

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. SaaS Platform Subscription: Annual or multi-year subscription for access to the modular airline digital ecosystem covering Digital Experience, Disruption Management, Notification, Travel Marketing, and Data & AI modules.
2. Professional Services: Implementation and customization services including CMS migration, data platform implementation, and disruption management deployment. Governed by separate service agreements.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Stack Overflight provides a modular SaaS ecosystem of five integrated products for airlines: Digital Experience (CMS, booking, check-in, mobile), Notification (multi-channel passenger communications), Travel Marketing (AI-powered paid acquisition), Disruption Management (IROP workflows and self-service), and Data & AI (unified analytics layer). The products are PSS-agnostic, share a unified data layer, and are sold as annual or multi-year enterprise subscriptions with separately governed implementation services.

Product overview

Stack Overflight offers a modular ecosystem of five integrated products designed for airlines: Digital Experience (airline websites, mobile apps, CMS, booking flows, check-in, loyalty), Notification (multi-channel passenger communications), Travel Marketing (AI-powered paid acquisition and lifecycle campaigns), Disruption Management (IROP workflows and passenger self-service), and Data & AI (unified data layer with dashboards and AI-driven insights). These products are designed to interconnect — Notification powers Disruption Management communications, Data & AI feeds insights across all products, and Travel Marketing connects to airline sales flows.

Differentiator

Problem solved

Functional benefit

Products and services

• Digital Experience PSS-agnostic digital product suite covering the entire airline digital ecosystem including website (CMS, booking flow, manage booking, check-in, loyalty areas), mobile apps, and dedicated landings. Enables modular content management, conversion-first booking experiences and passenger self-service for airline digital direct channels.
• Disruption Management Complete disruption management suite for monitoring incidents, automating IROP workflows, communicating with passengers across channels, and managing operational impact in real time. Includes a passenger self-service portal for rebooking and an operations control dashboard.
• Notification Unified communication platform orchestrating transactional, operational and revenue-driven messages across Email, SMS, WhatsApp and Push Notifications throughout the passenger journey, covering booking confirmations, check-in, boarding passes, disruption alerts and ancillary upsells.
• Travel Marketing Travel-focused AI-powered marketing platform for managing, optimising and scaling paid acquisition and lifecycle campaigns. Features predictive bidding, route/market activation, audience segmentation and a unified growth dashboard connected to airline sales flows.
• Data & AI Intelligence layer platform unifying airline operational, commercial, marketing, financial and customer data into a single analytical foundation. Delivers role-based dashboards, AI-driven insights with anomaly detection, and real-time operational monitoring.

Quantifiable outcome

• 40% reduction in disruption recovery time
• +6 more outcomes

Named customers3 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability7 records

Feature6 records

Scale indicators12 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Datalex: Provides digital commerce, merchandising and passenger experience software to airlines. Directly competes with Stack Overflight's Digital Experience and Travel Marketing modules for airline direct-channel RFPs.
• CellPoint Digital: Offers digital payment, PSS-agnostic commerce and ancillary platforms for airlines. Closely comparable to Stack Overflight's Digital Experience product with overlapping target customers in the airline IT modernisation space.
• Accelya: Financial, commercial and passenger-facing software platform for airlines. Competes with Stack Overflight in commercial operations, data platforms and ancillary revenue optimisation for airline customers.
• OpenJaw (Accelya): Travel and loyalty platform serving airlines and travel retailers. Overlaps with Stack Overflight on loyalty areas, booking flows and travel-retail merchandising functionality.

Broad incumbents

• Amadeus: Dominant airline IT and GDS provider with Altéa PSS and Navitaire. Large incumbent offering overlapping passenger servicing, disruption and analytics capabilities at global scale.
• Sabre: Major global PSS and airline IT provider. Broad incumbent competing across nearly all airline digital touchpoints; Stack Overflight positions itself as a PSS-agnostic alternative layered on top of Sabre infrastructure.
• PROS: AI-powered pricing, revenue management and offer optimisation software used by airlines. Comparable to Stack Overflight's Data & AI and Travel Marketing modules for commercial optimisation use cases.
• Lufthansa Systems: Aviation IT vendor offering PSS, network planning and digital passenger solutions to airlines worldwide. Established incumbent providing overlapping functionality to Stack Overflight's product set.

Emerging players

• RateGain: Travel and hospitality SaaS for distribution, revenue intelligence and digital marketing. Partial overlap with Stack Overflight's Travel Marketing and Data & AI products in serving airlines and adjacent travel verticals.
• Flyr: Cloud-native airline commercial platform with revenue management, pricing and offer optimisation. Emerging competitor overlapping with Stack Overflight's Travel Marketing and Data & AI modules for next-generation airline platforms.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/stack-overflight

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stack Overflight