Heads up, Southwest fans! There's a new promotion that could save you some serious cash on your next trip. Southwest is offering a sweet 30% off base fares when you use the promo code DREAMBIG. This offer is valid for flights between January 26th and May 13th, 2026, so you have plenty of time to plan a spring adventure! Now, there are a few things to keep in mind. This discount only applies to flights within the continental U.S. and is valid for travel on Mondays, Tuesdays, Wednesdays, and Thursdays. But if your travel plans are flexible, this is a fantastic opportunity to snag a bargain. Plus, savvy award travelers know this stacks nicely with any Chase Offers you might have on your Southwest credit cards, potentially maximizing your savings! If you already have a Southwest flight booked during the eligible dates, it's worth checking if you can reprice it using the promo code. It could save you money on an existing reservation. Don't wait too long - book by January 8th to take advantage of this deal!