Met someone while traveling abroad? Now he won't respond to my messages?

I met someone while traveling abroad and we both really hit it off. We hung out with each other for about two weeks and got to know each other... or at least I thought. We live on different continents and I think we both knew that this wouldn't go anywhere. However, he encouraged me to come visit him in his country since I would be around the area for a weeks over the summer.

After we went our own separate ways we maintained contact for about two weeks. I then messaged him one day to make plans for my visiting him. He has yet to respond and it's been over a week. I understand that things change and that maybe he's moved on which is totally okay. I'm just upset by the fact that he hasn't given me an answer. Honestly I would be okay if he said no but I feel like leaving someone in the dark is kinda rude. Even though we weren't anything serious we still spent time together and shared some intimate moments. I guess I'm just dissapointed. I don't want to make assumptions and accuse him of anything. I know people get busy or start dating other people. I just feel like an answer would be nice.

So, I'm debating about whether or not to send him another message just to check in and see if he's okay. I dont want to come off as clingy or pushy but I feel like I deserve a response. What are your thoughts about this?