Northwest has renovated its online reservations system and they really want you to give it a try. Through Oct. 31, WorldPerks members can earn 2,000 bonus miles when they make their first online ticket purchase at the new nwa.com Reservations. And, every subsequent purchase at nwa.com nets you an additional 500 miles. If you’ve made reservations at nwa.com in the past, don’t fret, you are still eligible to earn this bonus, as Northwest is attempting to attract attention to its new, and presumably improved, system.

It appears these airlines might be reaching their goals regarding online usage, so if you still want to take advantage of these first-time offers, you better act quickly.