Alaska is about 1,983 times bigger than Tonga.

Tonga is approximately 747 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 198,206% larger than Tonga. Meanwhile, the population of Tonga is ~105,517 people (604,714 more people live in Alaska).
Tip: This to-scale comparison of Tonga vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.