Solomon Islands is about 3.7 times bigger than French Southern and Antarctic Lands.

French Southern and Antarctic Lands is approximately 7,829 sq km, while Solomon Islands is approximately 28,896 sq km, making Solomon Islands 269% larger than French Southern and Antarctic Lands.
Tip: This to-scale comparison of French Southern and Antarctic Lands vs. Solomon Islands uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: Solomon Islands vs. French Southern and Antarctic Lands