May is a favorable month to travel from Denver International Airport (DEN) to Daniel K. Inouye International Airport (HNL). It’s shoulder season between spring and summer tourism peaks, often offering lower fares than high winter travel to Hawaii and pleasant weather on Oahu. Aim to book 6–10 weeks in advance for the best May deals.
Arriving at Daniel K. Inouye International Airport (HNL) in May provides a pleasant introduction to Oahu with warm weather, manageable crowds, and good opportunities for snorkeling and late-season whale watching. Use airport shuttles or rideshares to reach Waikiki quickly and plan inter-island flights if you intend to visit Maui or the Big Island.