The popular airline cards for Citi are the AA cards. If you are also looking for hotel stays, the Hilton card can be added to the mix. Both Citi and AMEX offer the HHonors cards (free and annual fee versions).
There are other offers for the AMEX PRG card that reached 75K points recently but it will require a higher spend to get them.
You will have to see which airline is worth the best value flying to Honduras. Each program has its advantage where one might not have an airline to transfer to and the other does.