This mistake could cost you up to $210 in Europe alone—but there's a solution smart travelers are already using. After testing every major eSIM provider across 15 European countries, one eSIM stands out: Saily. Here's why traditional roaming and local SIM cards are costing you hundreds of dollars, and how Saily solves the connectivity puzzle for European travel.
By Nord Security • 200+ countries
From $4/week · $13 for 2 weeks
Save up to $197 vs traditional roaming
Your existing US carrier
$10–15/day · $140–210 for 2 weeks
Up to $210 for a 2-week trip
Per country, airport kiosks
$15–30 each × countries visited
Multiplies cost across countries
Your regular carrier's international roaming hits you with $10 to $15 per day. That's potentially $210 for a 2-week trip—and it's easy to forget you're burning through it while checking Google Maps or texting back home.
Maybe you plan to buy local SIM cards. But picture this: you're exhausted after a transatlantic flight, digging through your bag for that tiny SIM tool, hoping the airport kiosk isn't sketchy. And if you're visiting multiple countries—France, Germany, Spain—you might need three or four different cards. One train ride later, your phone says "No Service."
⚠ The real problem: Most eSIM providers and local SIMs simply don't have the infrastructure to handle seamless multi-country European travel. You could end up with zero bars right when you need navigation the most.
Saily is built by Nord Security — the same company behind NordVPN. They've been managing secure internet infrastructure globally for years. That background matters: Saily connects your phone to whichever local carrier has the best signal in each country automatically, rather than locking you into a single network.
Watch our complete video guide to choosing the Best eSIM for Europe in 2026
One underrated feature: Saily's built-in ad blocker stops autoplay videos, trackers, and pop-ups from eating your data plan. This can save up to 28% of your mobile data—that's nearly 1.4 GB back on a 5 GB plan. You're also getting more privacy than a standard SIM card provides.
| Option | 2-Week Europe Trip | Crosses Borders? | Speed Throttled? | Hassle Level |
|---|---|---|---|---|
| Saily eSIM ⭐ | $13 | ✓ Seamless | ✓ Never | Minimal (3-min setup) |
| US Carrier Roaming | $140–$210 | ✓ Yes | ✗ Often | High (surprise bills) |
| Local SIM Cards | $15–30 × countries | ✗ One country only | Varies | Very High (repeat purchase) |
| Wi-Fi Only | $0 | ✗ Unreliable gaps | N/A | Risky (public Wi-Fi) |
The Saily advantage: One plan covers your entire European adventure. You could save $127–$197 compared to traditional roaming on a 2-week trip.