Fetching details from the dictionary...

sometime; someday; one day; some time or other; the other day; in due course; in time
いつか家族と一緒に海外旅行に行きたい。
I want to travel abroad someday.
いつかあなたに会えると信じています。
I believe I can meet you someday.
いつかこの経験が役に立つはずだ。
This experience should be useful someday.