TripStack

What TripStack does

TripStack is a B2B travel technology company that builds Virtual Interlining (VI) infrastructure, combining flights from multiple non-cooperating carriers (low-cost carriers, full-service carriers, and NDC-enabled airlines) into single, retail-ready itineraries. Founded in Toronto in 2016 and acquired by Sweden-based Etraveli Group in 2019, TripStack operates a multi-cloud (GCP and AWS) flight booking API that exposes 100+ LCCs, a growing roster of FSC NDC integrations (IATA NDC 17.2 certified), and TripStack-built VI fares; the platform processes 240M+ daily API searches across 40B+ daily price points and serves 28,000+ daily bookings, 16M+ annual passengers, and $3.1B USD of annual gross sales.

Its three core product lines are the TripStack API (the central flight content endpoint for OTAs and travel retailers), Self-Connect for Airlines (a customisable white-label platform that lets airlines retail VI fares on their own websites, with TripStack acting as Merchant of Record and offering a Self-Connect Guarantee covering missed connections), and FareShare (a subscription-based LCC content caching module delivered via FTP). The underlying VI engine, supported by 200+ employees across offices in Toronto, Pune, and Kraków, applies flight-matching, pricing, and automated rebooking algorithms to assemble unique itineraries that are unavailable through traditional GDS or interline channels.

TripStack makes money through transaction-based booking fees as a percentage of fare on VI, LCC, and NDC content; a recurring FareShare subscription; revenue-share economics on airline whitelabel deployments; and Merchant of Record payment economics across 19 payment methods, 40 currencies, and 10 payment providers. Its customer base spans airlines (Azul, Nok Air, Etraveli-owned carriers, plus 20+ NDC partners), OTAs and travel retailers (Alternative Airlines, eSky, SmartFares, LBF Travel, Tryp.com, Travelyn), airports (Aeroporti di Roma), and technology partners (Navitaire, Amadeus, InteliSys, Etraveli Group), with strategic distribution amplified through Etraveli's consumer brands and Amadeus/Navitaire-hosted carrier networks.

Name

TripStack

Legal name

TripStack

Website

https://tripstack.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

101–250 employees

Short description

TripStack is a Toronto-based B2B travel technology company, owned by Etraveli Group, that operates a flight booking API and white-label platform for Virtual Interlining — combining LCC, NDC, and full-service carrier fares into single itineraries for OTAs, airlines, and airports globally.

Ownership category

akta.pro rank

Product category

Travel Technology Platform

NAICS

Travel Agencies (56151), Travel Arrangement and Reservation Services (5615), Other Nonscheduled Air Transportation (481219)

SIC

Arrangement Of Transportation Of Freight & Cargo (4731), Air Courier Services (4513)

akta.pro primary industry

Online Booking & Reservation Platforms (B2B/B2C) (THALAMAA)

akta.pro secondary industry

Online Booking Tools (OBT) & Corporate Booking UX (THALAGAD)

Keywords

• Flight booking API
• Virtual interlining
• NDC content distribution
• Airline white-label platform
• LCC cache solutions

Headquarters

HQ city

Toronto

HQ country

Canada

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Booking fees on VI fares: TripStack charges a cost-effective booking fee as a % of the total fare for Virtual Interlining transactions processed through its API.
2. Booking fees on LCC and NDC content: Cost-effective booking fee applied on LCC and NDC fare transactions through the TripStack flight booking API; no markups added to base fares.
3. FareShare LCC Cache subscription: Low monthly recurring fee for access to cached LCC flight itineraries and price points delivered via FTP, with configurable caching intervals.
4. Airline Self-Connect revenue share: TripStack offers a lucrative revenue share to airlines using the White-Label Self-Connect platform; TripStack covers all technology, payment, and customer service costs (zero cost of ownership for the airline).
5. Merchant of Record payment economics: TripStack is the full Merchant of Record on VI fares sold through the Airline Whitelabel, taking payment economics across 19 payment methods, 40 currencies, and 10 payment providers (90%+ approval rate).

Pricing tiers

Go-to-market motion4 records

Distribution channels5 records

Marketing channels7 records

Core offering

TripStack is a B2B flight technology company that operates a Virtual Interlining (VI) booking engine combining flights from non-cooperating carriers (LCC, FSC, NDC) into single itineraries. It monetizes this capability through a flight booking API that exposes 100+ LCCs and NDC content to OTAs, a white-label Self-Connect platform that lets airlines retail VI fares on their own websites, and the FareShare LCC Cache data product. The platform processes 240M+ daily API searches, 28,000+ daily bookings, and $3.1B USD in annual gross sales.

Product overview

TripStack is a B2B Flights-as-a-Service platform built around three named offerings that share a common Virtual Interlining (VI) technology core. The TripStack API is the central flight booking product, exposing 100+ LCC integrations, Full-Service-Carrier NDC API integrations, and TripStack-built Virtual Interlining fares through a single endpoint with self-serve onboarding. The Self-Connect for Airlines product is an add-on White-Label platform that lets airlines retail VI / Self-Transfer fares from their own websites with TripStack acting as Merchant of Record and providing a Self-Connect Guarantee. FareShare is an add-on LCC caching module that supplies cached low-cost-carrier price points and itineraries to lower Look-to-Book ratios and power pricing calendars. Underlying all three is TripStack's proprietary Virtual Interlining technology — the flight-matching, pricing and automated rebooking engine — and the company also operates as Etraveli Group's Flights-as-a-Service gateway, exposing the parent group's flight content, payments, fraud prevention, pricing, and customer support to OTAs, airlines and meta platforms.

Differentiator

Problem solved

Functional benefit

Brands

• TripStack API: Flight booking API product providing LCC, NDC, and Virtual Interlining content access.
• Self-Connect for Airlines
• FareShare

Products and services

• TripStack API A B2B flight booking API that provides OTAs and travel retailers with access to 100+ Low-Cost Carriers, Full-Service Carrier NDC integrations, and TripStack-built Virtual Interlining fares via a single endpoint. Includes ancillaries (baggage, seat selection, branded fares), IATA NDC 17.2 certification, multi-cloud hosting on GCP and AWS with 99.9% uptime, sub-1-second search response, and 24/7 integration support with a Self-Serve Portal.
• Self-Connect for Airlines (White-Label Platform) A highly customizable white-label platform that lets airlines retail Virtual Interlining (Self-Connect) fares from their own websites via a deep-line redirect to a branded Airline Whitelabel. TripStack acts as full Merchant of Record, supports 33 languages, 19 payment methods across 40 currencies and 10 payment providers (PSD2/3DS compliant, 90%+ approval rate), and provides 24/7 pre-trip and in-trip customer support plus a TripStack Self-Connect Guarantee covering missed connections.
• FareShare Caching Solution A cached Low-Cost-Carrier flight content product that delivers LCC itineraries and price points to OTAs and travel sellers to lower Look-to-Book ratios, power pricing calendars, and enable marketing campaigns. Caching is based on One-Way pricing and the full route list per carrier, with configurable caching intervals and FTP delivery.

Quantifiable outcome

• 200+ employees across 4 continents
• +8 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

AI capability5 records

Feature8 records

Partnerships

23 partnerships are on record, tiered major, core, flagship / core and minor.

• flyadealmajorChannel Partner/ Reseller/ Distributor · 18 June 2026Strategic distribution agreement signed June 18, 2026 giving flyadeal direct access to TripStack's global API network, enabling flyadeal to distribute retail-ready content to some of the largest travel sellers worldwide. Provides access to dynamic pricing, branded fares, and ancillaries.
• SpiceJetcoreTechnology or Integration · 9 April 2026API integration completed April 9, 2026 providing broader distribution of SpiceJet content (SG), one of India's leading LCCs operating 150+ flights daily. Customers can consume comprehensive ancillaries, branded fares, and other capabilities within a single unified workflow.
• AzulmajorOEM/ Whitelabel/ Licensing Partner · 21 May 2025Virtual Interline partnership announced May 21, 2025 allowing Azul customers to book international connections directly on Azul Airline's website. TripStack technology builds the itineraries to minimize travel time and offer attractive fares; full baggage policies presented during booking.
• Aeroporti di Roma (ADR)majorStrategic or Co-development Partner · 13 November 2024Partnership announced November 13, 2024 to enhance connectivity with Virtual Interline Solution. TripStack's VI platform powers ADR's Fly&Visit Rome (flyandvisitrome.com) flight offering, providing travelers with greater connectivity via Rome Fiumicino (FCO) and Rome Ciampino (CIA) airports. Supports Rome as a travel hub and includes QPass fast-track benefits.
• RyanaircoreTechnology or Integration · 15 October 2024Ryanair API integration completed October 15, 2024 providing broader distribution of Ryanair (FR, RK), Malta Air, Buzz (RR), and Lauda Europe (LW) content via the TripStack API.
• Turkish AirlinescoreTechnology or Integration · 10 October 2024Turkish Airlines NDC 21.3 API integration completed October 10, 2024 providing broader distribution of Turkish Airlines (TK) content via the TripStack API.
• Amadeusflagship / coreStrategic or Co-development Partner · 13 June 2024Strategic agreement with Amadeus Travel Platform to integrate TripStack's Virtual Interline (VI) content, part of a wider joint initiative with Etraveli Group enabling Amadeus to source and distribute selected Etraveli Group content including TripStack VI fares. Announced June 13, 2024.
• EmiratescoreTechnology or Integration · 15 February 2024Emirates NDC 17.2 API integration completed February 15, 2024 providing broader distribution of Emirates (EK) content via the TripStack API.
• Air CanadacoreTechnology or Integration · 11 February 2024Air Canada NDC 21.3 API integration completed February 11, 2024 providing broader distribution of Air Canada (AC) content via the TripStack API.
• Nok AirmajorOEM/ Whitelabel/ Licensing Partner · 20 October 2023Nok Air launched 'NokGo', a Self-Connect product powered by TripStack, in October 2023. Allows Nok Air customers to purchase tickets to global destinations by combining Nok Air flights with other carriers. Provides expanded network, seamless booking, increased revenue, integrated Etraveli Group customer service, and the TripStack Self-Connect Guarantee.
• LATAM AirlinescoreTechnology or Integration · 1 June 2023LATAM NDC 19.2 API integration completed June 2023 providing broader distribution of LATAM NDC content (LA) via the TripStack API.
• Travelyn.comcoreChannel Partner/ Reseller/ Distributor · 31 May 2023Partnership announced May 31, 2023 to distribute TripStack's LCC and FareShare products via Travelyn.com, a Sweden-based flight search engine operating in Poland, Norway, Denmark, Germany, Spain, Italy, UK, and France.
• InteliSys AviationmajorStrategic or Co-development Partner · 1 May 2023Partnership and integration announced May 1, 2023 offering InteliSys Aviation airline partners a new indirect sales channel via TripStack's extensive client network (including GoToGate, MyTrip, Flight Network). TripStack's Self-Connect product is available to all InteliSys Aviation carriers to help expand their route network.
• Alternative AirlinescoreChannel Partner/ Reseller/ Distributor · 6 February 2023Partnership expansion announced February 6, 2023 to bring Virtual Interline fares to Alternative Airlines customers via alternativeairlines.com. UK-based global flight search and booking site working with 600+ airlines and 40+ payment types. Long-standing partnership (6+ years).
• Singapore AirlinescoreTechnology or Integration · 1 January 2023Singapore Airlines NDC 18.1 API integration completed January 2023 providing broader distribution of Singapore content (SQ) via the TripStack API.
• Tryp.comcoreChannel Partner/ Reseller/ Distributor · 1 December 2022Partnership announced December 1, 2022 to distribute TripStack's LCC and Virtual Interline (VI) products via Tryp.com, a young Danish OTA that creates multi-destination dynamic travel packages using AI to combine accommodation, rail, air, and bus content.
• Navitaireflagship / coreStrategic or Co-development Partner · 27 June 2022Strategic partnership announced June 27, 2022 to bring Virtual Interline technology directly to Navitaire's 60+ hosted carriers. Provides viable alternatives to code shares and interline agreements, enabling new connections and routes at very low cost. Enables airlines to sell Virtual Interline (self-connect) itineraries powered by TripStack technology via the Navitaire platform.
• IndiGocoreTechnology or Integration · 1 January 2022IndiGo API integration completed January 2022 providing broader distribution of IndiGo content (6E) via the TripStack API.
• British AirwayscoreTechnology or Integration · 1 November 2021British Airways NDC 17.2 API integration completed November 2021 providing broader distribution of British Airways content (BA) via the TripStack API.
• American AirlinescoreTechnology or Integration · 1 March 2021American Airlines NDC 17.2 API integration completed March 2021 providing broader distribution of American Airlines content (AA) via the TripStack API.
• Etraveli Groupflagship / coreStrategic or Co-development PartnerTripStack has been part of Etraveli Group since 2019 (acquired June 2019). As Etraveli Group's Flights-as-a-Service provider, TripStack connects partners to Etraveli Group's flight content, fulfillment capabilities, and travel-tech ecosystem, trusted by Booking.com, Google Flights, Skyscanner, and Kayak. Etraveli Group operates B2B brands plus consumer brands Gotogate, Mytrip, and Flightnetwork.
• IATA NDC Implementation Guide CommunityminorOthersTripStack joined the IATA NDC Implementation Guide Community for NDC 21.3 on September 29, 2022 — an industry standards body that helps members build best Virtual Interlining itineraries.
• Google Cloud Platform (GCP) / SADAmajorTechnology or IntegrationTripStack scales its business on Google Cloud Platform (GCP) with help from SADA, a GCP Premier Partner. After extensive provider review, GCP was selected for its technological edge (June 8, 2018). The TripStack API is now multi-cloud hosted across GCP and AWS.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Dohop: Dohop is a Reykjavik-based Virtual Interlining and self-connect technology provider founded in 2004, directly competing with TripStack by combining non-cooperating carriers into single itineraries for airlines, OTAs, and airports. The closest direct peer in the VI/self-connect space.
• Duffel: Duffel is a London-based flight booking API for travel businesses, providing access to NDC and LCC content. Direct peer to TripStack's API product, serving OTAs and travel retailers with aggregated flight content via a developer-facing API.
• Travelfusion: Travelfusion is a UK-based LCC content aggregator and direct-connect API provider for OTAs and TMCs. Direct peer to TripStack's LCC aggregation capability, with comparable API-first delivery to travel retailers globally.
• Mystifly: Mystifly is a Singapore-headquartered flight content aggregator offering OneSky API access to LCC and GDS content for OTAs and travel sellers. Direct peer in the flight content aggregation category serving OTAs with comparable take-rate economics.

Emerging players

• Kiwi.com: Kiwi.com (owned by Travelport) pioneered the consumer-facing Virtual Interlining product via its "self-transfer" guarantee. Adjacent peer to TripStack's VI technology with different go-to-market (consumer OTA vs. B2B API/white-label) but overlapping underlying self-connect capability.
• Hopper: Hopper is a mobile-first OTA and travel fintech that has explored self-connect and Virtual Interline offerings through partnerships. Emerging player with partial overlap in the VI product category, primarily consumer-facing rather than B2B infrastructure.
• Self-Transfer.com: Self-Transfer.com is a smaller specialist offering self-connect itineraries to consumers. Niche emerging player in the VI/self-connect category with meaningful but smaller-scale product overlap with TripStack's Virtual Interlining technology.

Broad incumbents

• Amadeus: Amadeus is the world's largest GDS and travel technology incumbent, offering NDC aggregation and the Amadeus Travel Platform with which TripStack has a strategic content partnership. Broad incumbent competing in airline distribution and NDC content aggregation.
• Sabre: Sabre is a leading global GDS and travel technology incumbent offering NDC content aggregation via SabreMosaic and a broad portfolio of airline and travel-retailer solutions. Broad incumbent competing with TripStack's NDC aggregation capabilities.
• Travelport: Travelport (now part of the Kiwi.com/Etraveli-adjacent ownership chain) is a major global GDS offering NDC content distribution and is itself the parent of Kiwi.com. Broad incumbent and indirect connection given its positioning in flight content distribution.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat7 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/trip-stack

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds1 record

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 TripStack