Tarantulas: The Deadly Cargo (1977) on Netflix

Plot summary

In Ecuador, two pilots bribe officials to fly a load of coffee beans into the United States, and they take on three passengers to smuggle in as well. The sacks in the cargo hold carry more than beans, because tarantulas nest inside them, and the noise and the height of the flight drive the spiders out during a thunderstorm. The plane comes down just outside Finleyville, California, an orange-growing town, and the spiders leave the wreck and head for the groves. Doc Hodgins treats the people pulled from the aircraft, unable to explain their symptoms. Mayor Douglas worries that news of the spiders will ruin the town's orange trade, while Cindy Beck, her family and Bert Springer try to learn what the plane carried.