day trip
A trip that is completed within a single day, without an overnight stay.
I went on a day trip to a hot spring over the weekend.
I went on a day trip to Hakone over the weekend.
I'm planning a day trip with a friend.
I visited Kyoto on a day trip.
日帰り is a general adjective/adverb meaning 'same-day return,' while 日帰り旅行 specifically names the trip itself as an event.
Compound of 日帰り (day return) + 旅行 (travel).