Are there any airline alliance and specialized connectivity providers that focus on improving connectivity to secondary markets?

Yes. There are a few airline alliances, regional airline groups, and specialized connectivity providers that explicitly help improve access to secondary or underserved markets.

Airline alliances / airline groups

These aren’t always marketed only around “secondary markets,” but they often improve connectivity by linking smaller cities into larger hubs:

• Star Alliance
  Strong hub-and-spoke coverage through member airlines, which often benefits secondary markets via regional feeders.

• oneworld
  Similar effect, especially through regional affiliates and code-sharing.

• SkyTeam
  Also supports connectivity into smaller markets through partner networks.

• Regional airline alliances / partnerships Some airline groups and joint ventures focus more directly on regional feed:

  • Scandinavian / Nordic regional cooperation
  • Lufthansa Group regional affiliates
  • Air France-KLM regional feed via subsidiaries
  • Iberia/Aer Lingus/BA regional networks

These tend to connect secondary cities to major hubs rather than build point-to-point service.

Specialized connectivity providers

These are more directly relevant if you mean providers that actively work to create or improve service for smaller markets:

• airline network planning firms They use demand forecasting and route economics to identify viable service for underserved cities.

• virtual interlining / distribution platforms Examples:

  • Kiwi.com
  • Travelport / Sabre / Amadeus ecosystem players
  • Mango, Dohop (specialized connectivity/interline tech)

  These help passengers connect across carriers, which can materially improve accessibility to smaller markets even without new flights.

• regional aviation specialists Companies and groups that focus on thin routes, essential air service, and community connectivity often target secondary markets:

  • Emerald Airlines-type regional operators
  • Propair / small regional carriers
  • public-service-obligation (PSO) operators in Europe

• airport and route development specialists Firms and airport route-development teams often act as “connectivity providers” for secondary markets by attracting airlines and coordinating incentives.

If you mean “alliances” in a broader sense

A few models are especially relevant for secondary markets:

• Code-share alliances Let smaller cities feed into bigger networks.
• Interline agreements Useful for low-volume routes where full network service isn’t economical.
• Virtual interline / itinerary stitching Often the most flexible option for secondary-market access.

Bottom line

If your goal is improving connectivity for secondary markets, the most relevant players are usually:

1. Major airline alliances with strong regional feeder networks
2. Regional airline groups / code-share partners
3. Specialized interline or virtual connectivity providers
4. Route-development and airport connectivity consultants

If you want, I can also give you a short list of specific companies by category, or tailor it to a region like Europe, North America, or Asia-Pacific.