If you don’t know what skiplagging is, its picking a cheap flight to an airport that through or close to where you want to go to. I do it often and rarely pay more than $250 for a one way flight from from Roatan to either Miami, Dallas, Atlanta or Houston.
So if you are interested in trying it, the best airports right now to search for a flight from Roatan are MSP, SLC and DTW.
Getting to Roatan is harder, there is a good deal from LAX to RTB going through Guatemala city right now for $225 one way (I found it on skiplagged.com). There are other options for less than $300 one way from many of the new york airports and Atlanta.
Here is what you search should look like: