**UPDATE: Southwest has extended its sale through Friday, June 5, so start planning a trip!**
Southwest Airlines is offering flights for as low as $47 during an epic four-day flash sale from June 2 through June 5.
Some of the best deals include a $49 one-way flight from Chicago to Memphis, a $49 flight from San Francisco to L.A. and $99 flights from New York to both New Orleans and Nashville.
After the sale crashed Southwest's website, the airline announced it had extended the deals for an extra day.
The sale lists one-way flights at four price levels: $49, $99, $129 and $149, though we even happened upon a one-way flight for $47 from Charlotte to Baltimore.
There are lots of inter-Texas flights for $49. And for $99, you can shop flights from Austin to Chicago, from Atlanta to Boston and more.
The sale is for travel between Aug. 24 and Dec. 16, 2015, with a few blackout dates including Labor Day weekend and Thanksgiving. The sale doesn't include Friday or Sunday flights, either. But the good news? If you've already booked a trip within the sale's designated dates, Southwest encourages you to look into changing your reservation, which could potentially score you one of the new, lower fares.
Oh how sweet air travel can be.
HuffPost Lifestyle is a daily newsletter that will make you happier and healthier — one email at a time. Learn more