United States travel checklist
Power, visa, eSIM, packing rules, and weather in one fast page.
Currency
USD
Language
English
Power
Plug types A, B, 120V / 60Hz.
Time zone
EST (UTC-5)
Power banks
Under 100Wh allowed in carry-on; 100-160Wh needs airline approval; Up to 2 units.
United States travel checklist overview
What this page covers
The United States travel checklist highlights the key rules that affect most visitors: power standards, entry requirements, SIM options, carry-on rules, and weather expectations.
Who it helps
Use this checklist if you want a fast pre-flight scan before diving into the full tools. It is designed for first-time visitors and quick repeat trips.
Local context
Expect 120V power, strong eSIM coverage in major cities, and TSA carry-on limits that are enforced at security checkpoints.
Local essentials
What locals use
- Transit card: NYC OMNY / MetroCard
- Main airports: JFK, LAX
- Emergency number: 911
- City climate notes: NYC is humid in summer and cold in winter; LA stays mild year-round; Miami is wet from June to October.
- Voltage differences: Voltage is consistent nationwide at 120V / 60Hz.
Local insight
The US is huge, so plan by region and expect long travel days between cities. Domestic flights are often the fastest way to move cross-country, while rail is best in the Northeast corridor. Tipping is standard in restaurants and ride services. Major metros are walkable downtown, but suburbs rely on cars. Weather swings can be extreme, so pack layers if your trip crosses multiple climates.
Entry essentials
🛂 Visa & entry
- ESTA required for visa waiver passports, B1/B2 for others
- Passport should be valid for the full stay
- Onward or return ticket recommended
🔌 Power & charging
- Type A/B plugs, 120V power
- Check device input labels for 100-240V support
- Bring a voltage converter for high-watt devices
📱 eSIM & data
- Major cities have strong 4G/LTE coverage
- Unlimited plans are best for navigation-heavy trips
- Activate eSIM before arrival for instant access
💳 Payments
- Cards widely accepted in cities
- Sales tax added at checkout
- Keep a small cash backup for tips and transit
Getting around, safety, and best seasons
🚆 Transportation
- Domestic flights are common for long distances
- Ride-hailing works well in major cities
- Tipping drivers is common in many areas
🛡️ Safety
- Emergency number is 911
- Keep valuables secure in crowded areas
- Avoid leaving bags unattended on public transport
🌤️ Best seasons
- Spring and fall offer mild weather
- Summer is peak season in major cities and national parks
- Winter storms can disrupt travel in northern states
Planning checklist
United States travel checklist tools to use
Power bank rules
Under 100Wh allowed in carry-on; 100-160Wh needs airline approval; Up to 2 units.
Open tool →Visa and entry snapshot
| Passport | Status | Notes |
|---|---|---|
| United Kingdom | visa-free | 90 days | ESTA authorization required - apply online before travel. |
| Japan | visa-free | 90 days | ESTA required before travel. |
| Australia | visa-free | 90 days | ESTA required before travel. |
| France | Check | Open visa tool for full rules. |
Best eSIM picks for United States
Airalo
5GB for 30 days • $15 • 4G/5G
Nomad
5GB for 30 days • $18 • 4G/LTE
Weather and packing advice
Best weather months around New York:
- September: 24°C / 17°C, 109mm rain
- May: 22°C / 13°C, 106mm rain
- June: 27°C / 18°C, 112mm rain
FAQ
It depends on your passport. Many travelers use ESTA, while others need a B1/B2 visa.
The United States uses type A and B plugs with 120V / 60Hz power.
Yes, but they must be carried in the cabin and are limited by watt-hour rating.
Other destinations
Last updated: 2025-02-01. Always confirm critical rules with official sources.