GigSky

GigSky was founded in Silicon Valley in 2010, well before most of today's eSIM apps existed, and that US base has translated into deeper, longer-standing relationships with American carrier networks than most international competitors bring to the table. It's also one of the few providers running promotions tied to major US events, including a 2026 offer built around the World Cup being hosted across the US, Canada, and Mexico.

For a visit to the United States specifically, GigSky's per-GB cost improves fast at scale: smaller plans start around $9 for 1GB over 7 days, but larger bundles bring the effective rate down toward $0.55 to $0.90 per gigabyte. Frequent visitors or people relocating temporarily can use GigSky One, a monthly subscription with 50 to 100GB tiers billed monthly, quarterly, or annually, a structure closer to a normal US phone plan than a one-off travel package. Coverage is data-only. It's a strong option for anyone who wants a provider with real US roots and infrastructure rather than an offshore reseller layering a plan on top of a network it doesn't control.