Exhibit 99.1 Tripadvisor Reports First Quarter 2024 Financial Results NEEDHAM, MA, May 8, 2024 — Tripadvisor, Inc. (Nasdaq: TRIP) (“Tripadvisor” or the “Company”) today announced financial results for the first quarter ended March 31, 2024. • Revenue of $395 million, reflecting year-over-year growth of 6$59 million, or $0.43 loss per share, which includes the net impact of$42 million in incremental income tax expense, a result of a previously communicated IRS audit settlement. Refer to “In ...