Is it journeys or journey's

Both are correct depending on the context:

• journeys is the plural form for the singular noun journey
• journey's is the singular possessive form

Examples:

plural: My journeys have now all ended.

possessive: My journey's end will come soon.

The Word journeys is also the third person, singular, present, of the verb to journey (journeys, journeying, journeyed):

• He often journeys to Europe.