San Francisco has become the nation’s costliest summer destination for tourists, according to the annual TripAdvisor.com TripIndex Cities cost comparison study.

Honolulu was the costliest destination last summer, but has dropped four places from a year ago.

The average daily cost for two to visit San Francisco is $508, versus $431 for Honolulu which is now ranked fifth.

Between the City by the Bay and Honolulu, are New York City, with a $501 average daily cost, Boston, Mass., at $491, both unchanged from a year ago, while Seattle, Wash., is the fourth-costliest summer destination this year with an average daily cost of $484, four spots ahead of last summer.

The least expensive U.S. destination is Las Vegas at $276 per day for two people.