Here are 8 mistakes to avoid if you want to get the Chase Sapphire Preferred while it has its 100,000-point welcome bonus before it ends on May 15.

New Sapphire Preferred cardholders have one last chance to earn 100,000 welcome bonus points after spending $5,000 on purchases in the first three months from account opening. This rare offer, which is worth up to $1,250 in travel redemptions, will officially end on May 15 at 9 AM ET.

The Chase Sapphire Preferred's massive limited-time welcome bonus is ending soon. Here's why travel hackers are jumping on it before it disappears.