Honolulu is about 2.8 times smaller than Antigua and Barbuda.

Antigua and Barbuda is approximately 443 sq km, while Honolulu is approximately 157 sq km, making Honolulu 35.4% the size of Antigua and Barbuda.
Tip: This to-scale comparison of Antigua and Barbuda vs. Honolulu uses the Mercator projection, which distorts the size of regions near the poles.