Beyond building engaging websites and driving digital marketing, we specialize in travel API integration development, connecting external services and creating custom tools that empower our clients to deliver seamless, personalized experiences. Over the years, we’ve worked with nearly every major travel-related service, engineering innovative solutions that streamline operations and enhance results.
MAKING BOOKINGS SEAMLESS AND EFFORTLESS
Booking Engines Integration
From hotels and villas to cruises, experiences, and car rental brokers, bookings sit at the core of travel commerce. We engineer seamless booking journeys by connecting any system with a structured API directly into your digital ecosystem. By eliminating friction and external redirects, we deliver a fluid, branded experience. Backed by real-time inventory synchronization, robust security, and headless flexibility, our integrations empower travel agencies and hospitality brands to streamline operations and maximize direct conversions.
WHEN OFF-THE-SHELF ISN'T ENOUGH
Custom AI Solutions Development
We architect cutting-edge AI ecosystems, from conversational chatbots and automated translations to RAG platforms and LLM orchestrators. By integrating knowledge graphs and advanced AI search, we automate internal customer service workflows, dramatically accelerating response times and building the intelligent infrastructure travel professionals need to scale operations and elevate client experiences.
TURNING GUESTS INTO LIFELONG CUSTOMERS
Loyalty Platforms Integration
We design seamless, frictionless loyalty platform integrations that deepen guest engagement and drive repeat business. By connecting advanced loyalty systems directly into your digital touchpoints, we allow hotel guests to check reward tiers, redeem points, and access personalized offers in real time. This unified, data-driven approach removes operational friction, fosters brand affinity, and transforms casual travelers into lifelong brand advocates.
SEAMLESS PAYMENTS, GLOBAL REACH
Payment Gateway Integrations
A flawless booking journey requires a secure, frictionless checkout. We develop robust integrations with leading domestic and international providers—including Stripe, Revolut, Cardlink, Viva, and Nexi—utilizing API, Redirect, or iFrame methods. Our expertise extends beyond standard transactions to manage complex workflows like automated future collections, real-time refunds, IRIS payments, split installments, and pre-authorizations, ensuring absolute compliance, security, and a seamless payment experience.
CONNECTING THE DOTS ACROSS SYSTEMS
CRM & Internal Tools Integrations
We unify your technical ecosystem by bridging the gap between your digital front-end and critical backend systems. Our tailor-made integrations connect CRMs and ERPs to automate internal workflows, streamline lead management, and accurately track marketing conversions. By centralizing guest profiling, secure client login areas, and automated email workflows, we empower travel professionals to eliminate manual data entry, optimize operations, and deliver hyper-personalized service at scale.
MAXIMIZING VISIBILITY WITH GOOGLE
Google Services Integrations
We leverage the full power of Google’s infrastructure to boost your visibility and data accuracy. Our expertise spans advanced API integrations for Google Things to Do and Google Maps, custom Google Cloud and Google Apps Scripting to automate workflows, and cutting-edge server-side tracking implementations. By engineering clean, secure data streams, we ensure precise performance measurement, compliant tracking, and highly optimized digital marketing campaigns.
Featured case studies
Mar-bella Collection
#SeamlessBookingEngine #LoyaltyIntegration
For MarBella Collection, we engineered a seamless booking engine and secure payment gateway integration directly into a high-end, user-centric website. The system is designed to provide prospective guests with a frictionless checkout path, making it effortless to navigate availability and complete reservations securely across the luxury resort portfolio.
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Manessis Travel
#OTA #PaymentGateway #DigitalCoupons #AI-Development
For Manessis Travel, we delivered a comprehensive digital transformation by integrating a high-performance hotel booking engine, complex holiday package feeds, and secure, PCI-certified payment gateways. Backed by advanced server-side analytics tracking, this robust ecosystem provides a seamless, data-driven booking journey for group itineraries and FIT travelers alike.
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Discover Greece
#HotelBookingIntegration #ExperiencesBookingIntegration
For Discover Greece, we engineered a powerful multi-supplier integration that seamlessly connects hotel inventory and diverse experiential providers into a single digital ecosystem. The platform pulls real-time availability and dynamic pricing, embedding these booking paths natively within the editorial content as well as deploying them through standalone travel planning features to inspire and convert travelers.
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KeyTours
#ExperiencesBookingIntegration #PaymentGateway
For Keytours, we engineered a seamless booking experience by integrating their digital platform directly with a leading travel tech distributor. Combined with a secure payment gateway, smooth CRM integrations, and an SEO-AI optimized framework, this robust ecosystem automates backend workflows while maximizing search visibility and delivering a frictionless journey for travelers booking excursions.
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Variety Cruises
#CruisesBookingIntegration #PaymentGateway
For Variety Cruises, we engineered a comprehensive digital overhaul, transitioning their business model from simple lead generation to a real-time booking engine. The solution integrates a specialized cruise API for cabin and departure selection, secure payment gateways, and direct backoffice connectivity, delivering a seamless, conversion-driven reservation experience.
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ElaMeteoraTrikala
#GoogleCloudTools #AdvancedAnalytics
For ElaMeteoraTrikala, we implemented an advanced integration of Google Services APIs to enhance destination discovery. By embedding custom mapping, sophisticated location filtering, and real-time directions, we created an intuitive regional guide. Coupled with a tailored Google Analytics tracking integration, the platform delivers deep data insights into user behavior and engagement.
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AbbyCar
#CarRentalBooking Integration #OaymentGateway #OnlineCheckin #BookingManagement
For Abbycar, we engineered a fully integrated car rental booking ecosystem designed to streamline the entire vehicle rental lifecycle. The solution connects a seamless booking path with real-time online check-in capabilities, comprehensive customer booking management, and direct CRM and backoffice system integrations to automate fleet operations and elevate user convenience.
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Hotelsnest
#OTA #PaymentGateway #MultipleAccommodationProviders
For Hotelsnest, we engineered a high-performance booking platform that aggregates multiple accommodation providers into a single, unified interface. The solution combines secure payment gateways with an enhanced, GDPR-compliant client area, allowing users to effortlessly manage their complex reservations, update personal information, and access their complete booking history within a secure ecosystem.
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Blue Villas Collection
#HotelBookingIntegration #VillasPortal #AI-Development
For Blue Villas Collection, we engineered a high-performance booking platform integration that delivers real-time villa availability and dynamic pricing. To complement this, we developed custom AI solutions aimed at automating and elevating the customer experience, enabling hyper-personalized interactions that cater to the unique preferences of luxury travelers.
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Integrating complex travel APIs is only half the battle. At Nelios, we blend this technical engineering with award-winning UX/UI design, SEO-AI frameworks, and our status as a Google Premier Partner to ensure your infrastructure drives commercial success.
Since 2008, we have been 100% focused on travel and hospitality. We speak your language and understand your operational pain points. When you choose Nelios, you aren’t just hiring a development agency; you are partnering with industry specialists dedicated to scaling your business and future-proofing your digital footprint.