1.   A complimentary upgrade to an ocean-view room is subject to availability.

2.   Early next year Delta will stop awarding complimentary upgrades good on international flights to silver and gold SkyMiles members.

3.   He had called the airlines earlier for a complimentary first-class upgrade through the frequent flier program.

4.   In addition to cheaper tickets, American said it will give double frequent-flier miles and complimentary upgrades to members of its frequent-flier program.

5.   They will have unlimited complimentary upgrades in North America and six annual upgrades for international flights.