1590s, contraction of Middle English in felde, from Old English on felda "in the field" (especially of battle), from a- "on" (see a- (1)) + field (n.). Meaning "away from home" is attested by early 15c.
1. During their summer holidays they cruised further afield to Normandy and Brittany.
2. British tour companies are nudging clients to travel further afield.
3. Many of those arrested came from far afield.
4. Don't go too far afield or you'll get lost.
5. You can hire a car if you want to explore further afield.