Gaza Strip is about 1.4 times smaller than Flathead Lake.

Flathead Lake is approximately 510 km² (197 sq mi), while Gaza Strip is approximately 365 km² (141 sq mi), making Gaza Strip 71.57% the size of Flathead Lake.
Tip: This to-scale comparison of Flathead Lake vs. Gaza Strip uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.