I flew across the Pacific on Alaska Airlines last month and they specifically said they'd only have Internet until we left the continental US. Most of the trip had no Internet, just the in-flight movies that you can stream over their wifi.
Depending on the satellite provider, they may still be using satellite and still only work over the continental US. Even starlink basically bounces the signal off a satellite and down to a ground station; this doesn't work over the ocean. They just started doing satellite to satellite links to get "back to land".
