Sadly, at this time your choice of satellite providers is extremely limited. I do hope you have a safe, happy trip. Things may be different in a year or so with the upcoming low-earth orbiting satellite system currently being launched by Space X called Starlink.
After a quick Google search, I found this:
The big three providers of satellite phone service are Iridium, Globalstar, and Inmarsat. Iridium has the highest service prices because they offer the most comprehensive global service, effectively covering the entire planet with a network of 66 low-Earth orbiting (LEO) satellites.Jun 8, 2021
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