Do you still travel if you are depressed?

I have an incredible 13 day trip to Iceland coming up literally in a week that iv been planning for a while. But recently iv become so depressed, and next week is also the 1 year for my fathers passing and I really don’t feel motivated to go. If I cancel I won’t get a refund on my plan ticket. I’ll be traveling solo and I feel that might make it worse. But then maybe traveling somewhere if always wanted to go might make me temporarily feel better.