Up to 40% Off Southwest Airfares!

Southwest Airlines is offering up to 40% off on select flights with the promo code FLOWERS when booked by April 23, 2026. This discount applies to a wide range of travel dates from May through September 2026, with specific blackout dates. The deal includes domestic U.S., international, Hawaii, and Puerto Rico flights, making it quite versatile.

The deal is attractive, especially with a significant discount of up to 40%, which is above average for Southwest fare deals. The requirement to book by April 23 and the restrictions on blackout dates are typical; however, the wide availability of travel dates and destinations enhances its value.

While the discount is sizable, it's important to note that taxes, fees, and additional charges may apply, and seats are limited. Still, this offer is one of the better savings opportunities for Southwest flights in this promotional window, making it worth considering if your travel plans align with the available dates.