One of the fastest ways to get miles is to take advantage of sign-up offers. As promised in the title, here are as many as 9 promos you can sign up for to collect a bunch of miles quickly. Some may involve fees, but buying miles is like buying USD, Labubus, or any valuable commodity — get them cheap enough and you’re still coming up ahead. 1: Miles and vouchers with Amex Travel Insurance Most promos that give you miles for signing up are credit cards, so kicking this list off is an unexpected source you can get miles from — travel insurance. The current promo gives miles if you use a Amex KrisFlyer or Amex Platinum card, plus Grab vouchers that can offset your policy premium. For some single-day trips, the value of the gifts can even exceed the cost of the coverage. Check it out here: 2 & 3: Up to 140,000 miles with Amex KrisFlyer Ascend + Amex Platinum Charge...