United States eSIM for 3 Days
Choose a package that lasts the trip and fits your real data pattern rather than buying solely from the headline price.
| Provider | Package | Validity | Price |
|---|---|---|---|
| Saily | 1 GB | 7 days | US$3.99 |
| Airalo | 1 GB | 3 days | US$4.00 |
| Saily | 3 GB | 30 days | US$8.99 |
| Airalo | 3 GB | 7 days | US$9.00 |
| Airalo | 5 GB | 7 days | US$12.50 |
| Saily | 5 GB | 30 days | US$13.99 |
| Airalo | 10 GB | 15 days | US$22.00 |
| Saily | 10 GB | 30 days | US$22.99 |
| Airalo | 20 GB | 30 days | US$36.50 |
| Saily | 20 GB | 30 days | US$36.99 |
How much data for 3 days?
Light: about 0.8 GB before a safety buffer — Maps, messaging, email and light browsing.
Moderate: about 2.3 GB before a safety buffer — Navigation, social media, browsing and some short video.
Heavy: about 4.5 GB before a safety buffer — Frequent social/video use plus hotspot or uploads.
Remote work: about 9.0 GB before a safety buffer — Hotspot use, video calls, cloud files and heavier streaming.
A 20% buffer is useful if you expect navigation-heavy days, hotspot use or cellular photo backup.
Validity can eliminate an otherwise cheap plan
A package that expires before day 3 is not a complete solution unless you plan to top up or buy another package. Compare full-trip cost rather than the lowest entry price.
Price is not the only filter
Check the local network, hotspot policy, high-speed fair-use rules, activation timing and whether you need ordinary voice/SMS. For Canadian travellers, keeping the home SIM active for incoming SMS can also affect the setup.
Primary provider sources
Saily United States packages →
Airalo United States packages →
Related tools
Calculate your own data need →
All United States package benchmarks →
General 3-day travel-data guide →
Pricing snapshot: September 12, 2026. Re-check live packages before purchase.