The price is based on the complexity, features, and type of B2b travel portal development or B2C travel portal development for the business need. Website design, user experience, and mobile-friendly features all play a role in the final price, the more features you require (like car rental, bus, or cruise booking engines), the higher the development cost.
The cost depends heavily on the complexity of the features, integrations with Global Distribution Systems (GDS) or other APIs. A well-designed basic portals with essential booking features are less expensive.