LT or light truck tires can be installed on a travel trailer and they will usually work just fine and get you to and from your destination.
However it's recommended to use regular trailer tires on all trailers including travel trailers because the trailer tires are made with stiffer sidewalls which help to reduce the bouncing and swaying of the travel trailer.
So your travel trailer will ride much better going down the highway when you use trailer tires on the travel trailer.
I have used LT tires on trailers and travel trailers before and never had a problem but I find my trailers including my travel trailer pulls much better using trailer tires instead of LT tires.
It's worth the extra cost to pay for trailer tires vs the LT tires but if all you can find where you're at at the time are LT tires then you certainly can use the LT tires on the travel trailer.
But I would go with trailer tires for the best ride and to prevent blowouts.