Snow storms during winter can cause delays and cancellations throughout the major airline hubs in the US. Contact your airline or travel company before you leave. See Natural disasters
The hurricane season normally runs from June to November and can affect US coastal regions. You should monitor the progress of approaching storms on the US National Hurricane Centre website. See Natural disasters.
The US Visa Waiver Programme (VWP) allows most British Citizen passport holders to visit the US for up to 90 days without a visa. If you’re arriving by air or sea, you must get an authorisation via the Electronic System for Travel Authorisation (ESTA) before you travel. See Entry requirements
If you’re arriving by land from Mexico or Canada and you qualify for entry to the US under the Visa Waiver Programme, you won’t need to complete an ESTA. See Entry requirements
There is a general threat from terrorism. See Terrorism
You should be alert to the dangers of car and street crime. See Crime
Around 5.5 million British nationals visit the United States every year. Most visits are trouble free.
The Overseas Business Risk service offers information and advice for British companies operating overseas on how to manage political, economic, and business security-related risks
Take out comprehensive travel and medical insurance before you travel.