Travel App Development Company

The Travel Platform That Lasts Is the One That Handles Complexity

Travel software looks simple on the surface. Search, book, pay. But underneath that surface is a layer of complexity that breaks most development teams: timezone synchronization across suppliers, fare rules that change mid-session, multi-currency payment flows, regulatory compliance that varies by country, and real-time inventory from systems designed in the 1970s.

EltexSoft is a travel app development company. 35-50 senior engineers. Headquartered in Lisbon, Portugal. Engineering team in Ukraine. Founded in 2015. We build travel platforms, airline passenger rights systems, booking engines, and aggregator integrations.

Our travel clients include MyFlyRight, an EU air passenger rights platform that has recovered over €100M in compensation for delayed and cancelled flights, and a major global travel aggregator where we shipped timezone synchronization and multi-airline checkout under NDA.

What We Built

MyFlyRight: €100M+ Recovered for EU Air Passengers

MyFlyRight enforces air passenger rights under EU Regulation 261/2004, the regulation that entitles passengers to €250-€600 in compensation for flight delays, cancellations, and denied boarding. We have been their engineering partner for over 10 years.

The platform handles the full claims lifecycle: passenger claim submission with flight data validation, eligibility assessment against the regulation’s criteria, case management for legal teams, court filing automation across multiple EU jurisdictions, integration with European Court of Justice rulings that set precedent for new claim types, airline response tracking, settlement management, and compensation disbursement.

What makes this system hard: every airline disputes claims differently. Every EU member state has different procedural requirements for court filings. ECJ rulings periodically expand or narrow what counts as an “extraordinary circumstance.” The platform must adapt to all of this while processing thousands of active claims.

Over 10 years, MyFlyRight has recovered more than €100M in compensation for passengers. The legal and engineering infrastructure that makes this possible is production software, not a claims form with a database behind it.

Major Travel Aggregator: Timezone Synchronization and Multi-Airline Checkout

For a major global travel aggregator (name confidential), we shipped two critical features:

Timezone synchronization. When a passenger books a multi-leg itinerary with connections in different timezones, every supplier returns times in its own format and timezone convention. Departure from Tokyo Narita at 14:00 JST, arrival in Los Angeles at 08:30 PDT, connecting departure at 11:45 PDT, arrival in Mexico City at 17:20 CST. The system must normalize, display, and validate all of this correctly, including daylight saving transitions.

Multi-airline checkout. A single itinerary may involve two or three carriers, each with its own fare rules, baggage policies, change fees, and payment requirements. The checkout must present a unified price, collect payment once, and split the transaction correctly across suppliers. If one leg changes price during the session, the system must handle the conflict without losing the booking.

What We Build for Travel

Booking and reservation systems. Flight search, hotel booking, multi-supplier aggregation, availability calendars, dynamic pricing, GDS and direct API integration (Amadeus, Sabre, Travelport), NDC connections, payment processing with multi-currency support.

LegalTech for travel. Claim engines, case management, jurisdiction routing, court filing automation, settlement tracking, regulatory compliance. This is the MyFlyRight vertical, and it is where travel meets legal automation.

Travel marketplaces. Two-sided platforms connecting travelers with service providers: tour operators, local guides, transfer services, vacation rentals. Listing management, review systems, booking calendars, payment escrow.

Travel operations dashboards. Real-time flight status monitoring, disruption management, passenger rebooking workflows, revenue analytics. The back-office systems that airlines and travel companies use to run their operations.

Mobile travel apps. Trip planning, itinerary management, offline access (critical for travelers with intermittent connectivity), push notifications for flight changes, boarding pass integration, and expense tracking.

What It Costs

Senior travel engineer (dedicated): $50-99/hr.

By project type:

Travel booking MVP: $40K-$80K, 3-5 months.

Passenger rights platform with case management: $80K-$180K, 5-8 months.

Multi-supplier aggregator integration: $60K-$150K, 3-6 months.

Travel marketplace (web + mobile): $120K-$300K, 6-12 months.

Annual maintenance: 15-20% of build cost.

Who We Are

EltexSoft is a boutique travel app development company. 35-50 senior engineers. Headquartered in Lisbon, Portugal. Engineering team in Ukraine. Founded in 2015.

Our travel clients include MyFlyRight (10-year partnership, €100M+ recovered) and a major global travel aggregator. We also build with Laravel, React, Vue, Django, iOS, and Android.

5.0 Clutch rating across 30+ verified reviews. 200+ five-star Upwork reviews. Top Rated Plus and Expert-Vetted agency status (top 1%). Average client engagement: 3+ years. Our Lisbon headquarters means GDPR-native operations and EU regulatory familiarity.

30-minute technical call. Bring your GDS integration challenge, your multi-supplier booking flow, or your travel product idea. We’ll tell you what we’d build and what we wouldn’t.

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