Short answer: clean up vacation photos on iPhone by grouping repeated moments and choosing the keeper first. The real goal is not deleting the trip. It is removing the weaker versions that make the album feel heavier than it needs to be.
Vacation clutter is usually a similar-photo problem more than a duplicate-photo problem. Sunsets, landmarks, meals, beach shots, family poses, and repeated attempts at the same scene all compete with each other without being exact copies.
What to review first
Repeated takes of the same landmark, meal, room, or scenic moment.
Burst-heavy groups where one frame is clearly stronger than the rest.
Utility travel images that no longer need to stay in the main library.
Obvious weak versions with blur, bad timing, or redundant framing.
How to keep the memories while reducing the clutter
Choose the keeper first before turning the rest into deletion candidates.
Treat the best expression, sharpest image, or strongest composition as the anchor.
Leave emotionally difficult groups for a second pass instead of deciding too fast.
Why vacation cleanup gets slow manually
Travel albums often contain more decision-heavy near-duplicates than everyday photo clutter. That is why grouped review matters more here than file-size logic alone. You are curating the album, not just making it smaller.
If you want the feature route next, open similar photos. If you want the broader memory-safe organization route, continue to How to Organize iPhone Photos Without Deleting Memories.
Vacation-photo cleanup works when you keep the trip memory intact and delete only the weaker repetitions around it.