Dan
Contributor
Not sure how Cocos & Galapagos are coming into this Komodo liveaboard conversation. Since OP is from USA, the traveling to Cocos & Galapagos would be shorter than to Komodo for sure.Dived Cocos in Costa Rica and the travelling required more days than actual diving!
The main reason why I never bother with Galapagos.
Going to Cocos, you would need to fly to San Jose, Costa Rica. For example from Houston would be 3.5 hour flight to San Jose. Then you need to take a 2-hour ground transport to Puntarenas to board the boat and 35-hour crossing to Cocos. For more details, please read Trip Report - Diving in Cocos Dec. 2020 Trip Report
Going to Galapagos would be much shorter than to Cocos. No crossing, since you can fly to Galapagos (Baltra or San Cristobal). For more detail, please read How is diving in Galapagos in December?