Travel from United States to United Kingdom is conditional — see requirements below
This is the generic answer for any United States citizen. Not legal or medical advice — verify with your airline and destination authorities before travel.
United States passport holders need an Electronic Travel Authorisation (eTA) to visit United Kingdom for stays of up to 6 months.
Generic country-level guidance for United Kingdom. Verify against the official source before you travel.
This page covers a direct flight to United Kingdom. If your route connects through a third country, that country may require its own transit visa — sometimes even for a short airside layover. Transit rules depend on your specific routing, so check the country you connect through separately, or analyse your full itinerary.
You're travelling to United Kingdom (GB). Your home cellular plan may or may not include data abroad — check your carrier's international options before you fly. An eSIM is a low-commitment alternative if your plan doesn't cover the destination or charges high roaming rates.
Declare USD 10,000 or equivalent when entering or leaving United States (US). Form: FinCEN Form 105. Must declare $10,000+ in currency/monetary instruments on entry or exit
This page covers the generic case for any United States citizen. Sign in (free) to factor in your specific passport expiry, vaccinations, previous visas held, and connecting flights — and get the same analysis for your exact itinerary.
Sign in (free) to personalize →The US State Department publishes these advisories for your route. United Kingdom: Level 2 — Exercise Increased Caution (as of 2025-05-08). Review the country page for the specific areas and risks flagged before you go. This is a US State Department safety perspective, not an entry or boarding rule — it doesn't affect whether you can board, only what to be aware of on the ground. Travellers from other countries should also check their own government's advisory.
United Kingdom's entry rules ask for proof you'll leave the country, but visa-waiver / ETA travelers like you usually get waved through without check-in agents looking. Have a screenshot of your return flight (or any onward ticket) on your phone in case they do — answers the question instantly.
United Kingdom (GB)'s immigration officers can ask arriving visitors to show they have enough money for the stay — some travellers are never asked, others are pulled aside at the same border on the same day, so plan as if you will be. Approximately $70/day per person. Accepted: Bank statements, payslips, or sponsor letter. UK immigration may request proof of funds for visit visas Have a recent bank statement, a credit card with available limit, or a sponsor letter ready — the goal is to have a documented answer the officer can check in 30 seconds, not a debate.
Typical September conditions at LHR (United Kingdom (GB)): mild. Typical lows around 10°C, highs around 19°C, some rain (~56mm for the month).
Your United States (US) passport requires an electronic travel authorization (ETA) for United Kingdom. ETAs are usually quick to apply for online but require advance preparation — don't leave it to the airport. Source: Wikipedia visa matrix, synced 2026-06-21T10:11:55.888854+00:00.