Southwest Discount Codes – Verified Deals & Offers | September 2026

Enjoy up to 40% off base fares for travel on select flights from 8/4 to 12/16 at Southwest.

Score up to 40% off your eligible order using this promo code during checkout.

Buy one, get one 20% off when you add this Southwest Airlines code.

Save up to 40% on your eligible order when this Southwest discount code is applied.

Take up to 30% off your order when you use the Southwest coupon code at checkout.

Buy and save 15% your rent-a-cart with a promo code from Southwest at checkout.

Enter this coupon code at checkout and get up to 1200 points payless car rentals.

Receive 30% off your purchase using a coupon code in your cart at Southwest.

Use this promo code at checkout to get up to 30% off your qualifying order.

Purchase at Southwest and get $500 off select orders using this coupon code in your cart.

Take up to 25% off with coupon code

Take 25% off rent a car by adding this Southwest code.

Enjoy $1 off sitewide by adding this Southwest code.

Paste this promo code at checkout and save 25% on any order.

Enter this coupon code at checkout and get a 25% discount on base fare.

Enjoy $5 off your purchase and earn up to 2,400 points (avis) at Southwest.

Get 75% off your order when you use the Southwest promo code at checkout.

Book at Southwest with a coupon code and get up to 50% off your cart at checkout.

Paste this promo code at checkout and save 30% on any order.

Shop at Southwest and take 20% off your purchase using a coupon code on your cart.