Southwest Low Fare Calendar 2025. Sign up to receive southwest emails to be alerted when we offer a sale. The southwest low fare calendar for 2025 is here to help you find the best deals on flights to your favorite destinations.
5, 2024, for 30% off travel through march 5, 2025, for domestic routes and may 22, 2025, for hawaii, puerto rico and. The low fare calendar is an online tool available on southwest airlines’ website.