If you cancel or change your flight, you will not get your money back. Nonetheless, most airlines will apply the value of your canceled ticket toward the purchase of a new ticket. Some restrictions apply as to how tickets can be used and purchased. This holds true even if an employee leaves the company. Nearly all non-refundable fares require the ticket to be purchased within 24 hours of making the reservation.
Fares are always liable to change until the reservation is ticketed.
For lower fares, a roundtrip ticket is generally, but not always, required. When using your non-refundable ticket towards a new ticket, there are a few things to remember. If you change your outbound flight you must start with a new ticket and reservation. Your current ticket value, minus an airline penalty charge, may be applied toward a new fare on your same airline. When you check in at the hotel, always ask if this is the lowest price they offer.