How to Get the Most from Frequent-Flier Miles

Pauline Frommer, Travel Expert and Author Keep track of your frequent flyer miles. Miles expire sooner these days; some are good for only 18 months. Consider giving miles to family members or as donations to charity. If you’re not planning to travel, you can use your miles for other purchases with most programs. If you collect miles from an airline affiliated credit card, be sure to pay your bills on time. Many airline cards carry very high fees. If you are planning travel, don’t take the first "no available seats” for an answer. Keep calling or surfing for your preferred dates of travel. You can use your miles to upgrade your ticket when booking a flight. (If you want an upgrade, you can also try asking at the airport if there are upgrades available for sale. Some airlines offer upgrades for as low as $30 one way.)