航空公司收紧了赚取里程的规定，将奖励限制为全价机票，并排除了许多折扣。 Airlines tighten rules on earning miles, limiting rewards to full-fare tickets and excluding many discounts.

航空公司现在对乘客何时可以赚取里程有更严格的规定。 Airlines now have stricter rules on when passengers can earn miles. 一般来说，您支付全额票价的航班可以赢取里程，但折扣、常旅客优惠和某些信用卡预订可能不计算在内。 Generally, you earn miles for flights you pay full fare for, but discounts, frequent flyer deals, and certain credit card bookings might not count. 请务必在预订前查看航空公司的政策，以确保您有资格获得里程奖励。 Always check your airline's policy before booking to ensure you qualify for mileage rewards.