Columbus Day celebrates the first voyage of Christopher Columbus to the new world in 1492. Of course, we honor the day with huge discounts at big box retail stores.

And with Halloween approaching, we can thank old Chris for big discounts on costumes at Kmart. The retailer is celebrating through Oct. 13 with 30 percent off Halloween costumes and decor.

Online, there many costumes for girls, boys, teens and adults for around $20 or less.

Use code CSTMK10 at checkout to maximize the savings with an extra 10% off costumes and 25% on decor. Ship to store for free, if you have a qualifying Kmart retail location nearby. Otherwise, shipping is FREE on purchases over $25.

Click this link:

Buy 1 Batman Dark Knight Boy’s Halloween Costume ($29.99) $19.94
Buy 1 Totally Ghoul Pink Pixie Fairy Girl Halloween Costume ($24.99) $16.62
Use code CSTMK10 at checkout.
Shipping is FREE.
Final Price: $32.91 shipped.