Roafly

Roafly uses SK Telecom and LG U+ networks for coverage across Korea. Pricing starts at $3.90 for 1GB valid for a week, scaling up to 50GB for 30 days, and includes mobile hotspot capability so you can tether to other devices. The week-long plans are among the cheapest entry points for quick Korea visits.

Best for budget travelers or those who need to share their connection with others. If you're just passing through Korea for a few days or managing multiple devices, Roafly delivers value without cutting corners on coverage.