2. If you're going to use your points on business or first class tickets, longer flights offer a better point value than shorter flights. "For business- or first-class flights under 1,000 miles, points averaged 0.72 cents in value; for flights over 1,000 miles, it was 1.13 cents per point." For shorter flights in business class, they recommend paying for your flight instead of using points.
3. In the event you're taking a one-way flight, that's a great opportunity to use points. "Almost two-thirds (62%) of one-way flights offer better point values than round-trip flights," the study found. While one-way tickets are often more expensive than a round-trip flight on a per-mile basis, using your points can provide good value.