Travel sections in major newspapers are one source of consolidators. But many of the best consolidators don't deal directly with the public. Their margins are small so they make their money on volume. They deal only with travel agencies who already find out from the customer what they want. So the consolidator is merely a booking engine, not a place to chat up your possible international trip plans. You can ask any travel agency if they work with consolidators and if so, which one(s). USACA also lists several consolidators who are part of their organization.

Often, but not always, such consolidator tickets have more restrictions than published fares. But on the other hand, often consolidator tickets are less restrictive - waiving advance purchase restrictions, even lower change fees on occasion than published fares, etc.

Delta started decreasing or eliminating mileage accrual on most consolidator fares, so be careful if you are using a consolidator for Delta flights.