Amazon: 30% off select Halloween candy (through 10/31) amazon.com

American Apparel: 15% off sitewide with newsletter sign up (ongoing) americanapparel.com

Costume Discounters: 10% off + free shipping with newsletter sign up (ongoing) costumediscounters.com

Costume Super Center: 15% off + free shipping on orders $39+ with code SKULL (through 10/31) costumesupercenter.com

Disney Store: 25% off orders $100+ with code SAVEMORE (through 10/21) shopdisney.com

eBay: Big savings sitewide on costumes and more (ongoing) ebay.com

Halloween Costumes: 20% off your first order with newsletter sign up + free shipping on orders $65+ (ongoing) halloweencostumes.com

Halloween Express: 30% off sitewide with code FLEX30 (through 10/31) halloweenexpress.com

Halloween Mall: 10% off sitewide with code DD921 (through 10/31) halloween-mall.com

Home Depot: Up to 30% off Halloween decorations + free shipping (through 10/31) homedepot.com

Macys: 25% off Halloween costumes with code THANKS (through 10/20) macys.com

Nordstrom: Up to 40% off Halloween costumes and decorations (ongoing) nordstrom.com

Nordstrom Rack: Up to 70% off Halloween clothing and accessories (ongoing) nordstromrack.com

Party City: 25% off + free shipping on orders $30+ with code TREAT25 (through 10/31) partycity.com

Petco: Up to 50% off dog + cat costumes (through 10/31) petco.com

Shindigz: $15 off all orders $99+, $25 off all orders $199+ and $50 off all orders $299+ with code FALL50 (through 10/28) shindigz.com

Spirit Halloween: 20% off 1 item with code TAKE20 (through 10/31) spirithalloween.com

Target: 50% off select costumes (through 10/21) target.com

UNIQLO: Download the UNIQLO app to get one free HEATTECH item priced $19.90 (through 10/31) uniqlo.com

Walgreens: Save 25% on select costumes (through 10/24) walgreens.com

Walmart: Big savings on Halloween costumes and candy (ongoing) walmart.com

Wholesale Halloween Costumes: 10% off + free shipping with code SWEETS (ongoing) wholesalehalloweencostumes.com

Windy City Novelties: $20 off + free shipping on orders $199+ with code DEAL20 (ongoing) windycitynovelties.com

Yandy: 10% off your first order with newsletter sign up (ongoing) yandy.com

Thanks for reading this huge list of Halloween Costume Deals 2019!