This is a transoceanic flight crossing the Atlantic.
Tips
usage
Almost always attributive: 越洋电话 ('transoceanic call'), 越洋航班 ('transoceanic flight'), 越洋光缆 ('transoceanic fiber cable'). 越洋电话 was a meaningful phrase in the era when international calls were rare and expensive - today most uses lean toward shipping, aviation, or undersea cables.
memory
越 ('to cross over/exceed') + 洋 ('ocean') - 'cross the ocean'. The same 越 is in 超越 ('to surpass') and 越过 ('to cross over').
