I have read press released from 2011 announcing the interline relationship (googled it fatter seeing signs in there airport when flying JetBlue and having gone to Chile in LAN many times). But I cannot find a way to book a JetBlue flight and LAN on one ticket with bag gaged checked through. Neither airline's web site is letting me do this (doesn't offer the destinations needed) and I have called both with no luck (but wasn't particularly impressed with the knowledge of the agents I spoke with). I do have a travel agent friend who tells me she can do it but I worry that it isn't really right as I have had no luck calling either airline. Trying to go from Burlington BTV to Santiago Chile SCL. If I cannot check the luggage straight through will probably drive to Boston or NY instead (have done that in the past for 10 previous trips). The LAN flight from JFK is direct so is usually worth the extra travel time to JFK over BOS.

Any idea if I can actually have luggage checked through LAN/JetBlue at JFK? I know I'd need to retrieve the luggage for customs on my return but was hoping to just put it back on the he belt like you would on a connecting flight.

If this is not possible, any idea how travel between terminals at JFK would be if I purchased a separate JetBlue BTV to JFK round trip? The problem is it is a ski trip so everyone has a backpack, gear bag, and a big ski bag to have to switch terminals with.