WOW, that is a great fare and I only hope that they start promoting fares from Miami like that. Come on Pedro, please!
Here’s a chance to visit one of the world’s most biodiverse countries if you can navigate the blackout dates: Copa Airlines is offering a round-trip fare for $473, which includes all taxes and fees, from LAX to Panama City.
The fare is subject to availability and must be purchased 14 days in advance. You must stay at least three nights but may not stay more than 30.
You may travel any day of the week between Feb. 1 and April 15. These blackout dates apply: Flying from the U.S. to Panama: March 4-9 and April 19-23. Flying from Panama to the U.S. Feb. 26-March 3 and March 12-April 20.
Info: Copa Airlines, 
(800) 359-2672
Source: Airfarewatchdog
Las Vegas is LAS not LAX to avoid any confusion. I also found a copa fair to Las Vegas for $401 round trip.