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Alternative Airlines and TripStack partner to bring Virtual Interline fares to customers

Toronto, Canada, Feb 6, 2022


TripStack is proud to announce a partnership with Alternative Airlines to distribute TripStack’s Virtual Interline (VI) product via website.


Virtual Interlining, also known as VI or Self-Transfer fares, is the act of creating travel itineraries by combining flights between carriers without Interline agreements or Code-share agreements. Virtual Interlining is a new perspective on travel that provides more options, better prices for the consumers, and margin opportunities for the OTAs. Virtual Interlining has grown from a niche product offered by a few online players to a viable travel option for travelers around the world. There is a real opportunity for OTAs to embrace this technology and differentiate their content by selling VI flights that are increasingly more popular with the traveling public.


Alternative Airlines, based in the UK, is a unique global flight search and booking site. Alternative Airlines specializes in providing travelers with a wide choice of flights by working with more than 600+ global airlines and accepting 40+ payment types including buy now pay later options.


Sam Argyle, Managing Director of Alternative Airlines, commented on the partnership -”We’re very excited to be expanding our longstanding partnership with Tripstack by launching their Virtual Interlining product on our site. We operate within a highly competitive industry so it is crucial for us to differentiate ourselves with diverse and dynamic content. Tripstack’s world class VI technology provides us with access to better fares and more flight options and enables us to offer greater choice to our customers. Tripstack are leaders in their field and share our passion for innovation, so we look forward to continuing to work together on this project."


"We at Tripstack are very happy to have the opportunity to work with Sam and his team on this initiative. It is always a pleasure to cooperate with a forward thinking, capable, and technology oriented partner such as Alternative Airlines - and TripStack is lucky to be able to do that for 6 years now. Virtual Interline fares are a great step forward in offering more options and more competitive fares to customers, and we are looking forward to supporting Alternative Airlines with our unique technology on that journey." - said John Boguslawski, TripStack Co-Founder., founded in 2016 is a global leader in airline distribution & Virtual Interlining (VI) technology. Virtual Interlining (VI) combines carriers without traditional interline agreements into a single itinerary providing travelers more connections at significantly better prices. It also helps the Online Travel Agencies (OTA) and Airlines expand their product offering to customers.

The TripStack flight booking API is simple to integrate and provides access to the world's most important Low-Cost-Carriers (LCC), NDC - API connections and Virtual Interlining (VI) fares, without any mark-ups added. It also includes the most important ancillaries: Baggage and Seat selection. 

Media Contact:

John Boguslawski -

Avalon Harris Trussell - 

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