Many international fares routed through Gulf and Southeast Asian hubs allow stopovers of 24 hours or more at no extra airfare. Airlines like Emirates, Singapore Airlines, and Qatar Airways publish stopover programmes that 7x4Flights surfaces during search.
When comparing itineraries, look at total journey time versus layover duration. A 12-hour daytime layover in Singapore can be enough for a city tour; an overnight in Dubai pairs well with desert experiences.
Always verify visa requirements for the stopover country — Indian passport holders may need a transit visa depending on duration and airport zone.