We are the world’s leading specialist in air transport communications and IT solutions. Available means that for the identical airfare you have received a quote, it is currently saleable by Flight Centre and can be booked in the same booking class, for the same number of passengers, on the same date(s), at the same time(s) and on the same flight number(s).
You may want to split it and say that personnel permanently relocating (Long Term Personnel and Dependents), and travelling over 14 hours, have the right for Option 1) and split the trip and stay overnight but will only fly cheapest airfare available (again unless the additional cost of splitting the trip will make it more expensive than direct premium class fare).
Second, it states that documentation substantiating the lowest airfare available takes the form of quotations from competing airlines or travel service from which the lowest priced airfare can be selected; giving proper consideration to any potential discount or credits to the contractor’s cost”.
The most recent flight and airfare comparison websites are now configured to include price and live availability searches on full schedule airlines, low cost budget flights and holiday charter services, all search results are returned and presented in a comprehensive and easy to read display for easy price comparison.
The easiest way to find and compare all of the flight and airfare options for a particular route is to use one of the many online travel agencies (which sell tickets) or fare aggregator sites (which direct you to an airline or other website to purchase the fare).