It is possible to figure out how WWII affected passenger traffic in and out of Honolulu, Hawaii using Ancestry Library Edition (ALE). Just search Card Catalog for this Record Collection:
Honolulu, Hawaii, Passenger and Crew Lists, 1900-1959
Next search Arrival Date—Year for the following years:
1940: 122, 806 hits
1941: 120, 915 hits
1942: 14,764 hits
1943: 16,821 hits
1944: 30,384 hits
1945: 71,912 hits
1946: 192,046 hits
As you can see, the start of WWII had a direct and immediate impact on passenger traffic in and out of Honolulu. It reduced traffic by approximately 100,000 passengers per year during the period 1942-1944. Note: Traffic doubled in 1944 and doubled again in 1945 because by mid-1944 the U.S. military had established clear air and naval superiority throughout the Pacific Theater.
You may use ALE at Central Library or any of our branches.