The most common Korean word for “trip” is 여행 (yeohaeng). There is one more word with a similar meaning — compare them below. 「trip」는 한국어로 여행.
trip; travel
TOPIK 1 · noun
trip; picnic; outing
TOPIK 2 · noun
Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato