Flew with Alaska from LAX to Liberia, Costa Rica (and return) in January/February, 2019 and I have an Alaska card so we flew using miles. But Alaska always does a great job. On this trip, we were late leaving LAX but only because of weather issues elsewhere which delayed the arrival of our plane. Other than that, great flight and they made up most up the time in the air. Alaska flight attendants have always been great and no different on our flights to/from Costa Rica. I don't fly a lot so I'm no expert, but I highly recommend Alaska Airlines and have used them numerous times over the years.