: Just because you have the miles doesn't mean the seat is available. Always verify "Saver" award space exists before hitting the buy button.
: High-end international travel. A business class ticket to Europe might cost $5,000 in cash, but if you can buy the 120,000 miles needed for $2,700 during a promotion, you save over $2,300.
: Airlines can change reward charts overnight, making your purchased miles worth less than what you paid.
: Always buy directly from the airline or official partners like Points.com . Using "mileage brokers" often violates terms of service and can lead to your account being shut down. When to Pull the Trigger When it Makes Sense to Buy Points