ESTA or a Visa - Which One Do UK Travellers Actually Need for Vegas?

ESTA stands for Electronic System for Travel Authorization. It's a digital pre-screening the US Department of Homeland Security runs on every passenger from a Visa Waiver Programme (VWP) country before that passenger is allowed to board a US-bound flight or ship. The UK has been a VWP member since 1988, alongside 40+ other countries including Ireland, France, Germany, Australia, Japan and South Korea.

An approved ESTA is not a physical stamp in your passport. It's a database record tied to your passport number that airlines look up when you check in for a US-bound flight. If there's no approved ESTA on file, the airline will refuse to board you.

A B1/B2 visa is a full traditional tourist visa. B1 covers business meetings, conferences and contract negotiations. B2 covers holidays, family visits and medical treatment. Both are stamped in your passport at a US embassy or consulate after an in-person interview and are typically valid for 10 years from issue. The two categories are almost always issued together as a combined B1/B2.

Both classifications allow the same 90-day maximum stay per trip. The practical difference is process: ESTA is a 15-minute online form with a 72-hour minimum lead time. A B1/B2 visa is a DS-160 application, biometric appointment and in-person interview at the US Embassy in London (or Belfast) with a 3-6 week wait for the appointment.

The UK is a VWP country. Any UK citizen with a valid British passport, travelling to the US for tourism, business meetings or transit, for 90 days or fewer per trip, uses an ESTA. That covers essentially every Vegas trip: hen weekends, stag do's, weddings, corporate offsites, F1 hospitality, casino runs, restaurant weekends.

The UK Foreign Office confirms this: travellers must have either an ESTA or a visa to enter or transit through the US, and the ESTA route applies to VWP members. Source: gov.uk/foreign-travel-advice/usa/entry-requirements.

ESTA coverage: - Tourism (holidays, weddings, family visits) - Business meetings, conferences and contract signing (no paid work) - Transit through a US airport en route somewhere else (even airside) - Up to 90 days per trip - Multiple trips over the 2-year validity window - Multiple US ports of entry within the same trip

ESTA does not cover: - Any paid employment in the US - Study at a US school for a degree (needs an F-1 student visa) - Marriage-based entry with intent to stay (needs a K-visa or CR-1) - Journalism assignments (needs an I-visa) - Trips longer than 90 days - Bringing goods for sale

The reasons a UK traveller cannot use ESTA are specific. If none of these apply to you, ESTA is the correct route:

Prior US visa denial at any point in your life, of any type - even if you never actually applied for the trip that denial referenced.

Prior arrest or conviction, including UK cannabis convictions. US federal law still classifies cannabis as a Schedule I controlled substance, and DHS treats any drug offence in your record as a bar to ESTA regardless of the offence's severity or whether it was prosecuted to conviction in the UK. This catches UK travellers off guard more than anything else on this list.

Prior US immigration violation, including overstaying a previous ESTA visit by even a day. DHS keeps a permanent record.

Dual nationality with any of nine countries: Iran, Iraq, Libya, North Korea, Somalia, Sudan, Syria, Yemen (dual nationals since March 2011), or Cuba (dual nationals since 12 January 2021). Source: cbp.dhs.gov/travel/international-visitors.

Travel to any of the same nine countries since the same cutoff dates, even on a single tourist trip.

Any trip longer than 90 days, even if all other criteria are met.

Paid employment or study. ESTA is strictly tourism, business meetings, and transit. Any activity that resembles work (including remote work for a UK employer while physically in the US) technically requires a work visa; the enforcement here is a grey zone.

If any of the above apply, the route is a B1/B2 visa via the US Embassy in London (or Belfast for Northern Ireland residents). Cost is US$185 for the visa itself, application processed via DS-160 form at ceac.state.gov. Interview wait times at London currently run 3-6 weeks; visa return typically 1-2 weeks after the interview.

ESTA application:

1. Go to esta.cbp.dhs.gov. This is the ONLY official portal. Copycat sites with domains like esta-us.com or esta-uk.gov.co charge £60-100 for a form you can fill in for $40 direct. If the URL isn't esta.cbp.dhs.gov, close the tab. 2. Fill in personal details (name, DOB, passport number, address, employer, US contact details). Takes 10-15 minutes. 3. Pay the $40 USD fee by card. Travel-optimised cards (Monzo, Chase, Revolut, Starling, First Direct) charge zero FX. 4. Submit. Most approvals arrive within 72 hours; many within minutes. About 1% get flagged for manual review, which can take 7-10 days. 5. Screenshot the approval page. Airlines don't require a printout at check-in, but it's peace of mind.

Lead time for group trips: apply 3 weeks minimum before departure so a manual-review flag doesn't derail the trip. Officially the minimum is 72 hours.

B1/B2 visa application:

1. Complete Form DS-160 at ceac.state.gov (US State Department portal). Takes 60-90 minutes; upload a compliant photo. 2. Pay the US$185 visa application fee via the US Embassy London payment portal. 3. Schedule biometrics and interview via ustraveldocs.com/gb. Current wait for a London appointment: 3-6 weeks. 4. Attend the interview at the US Embassy in London (Nine Elms) or Belfast. Bring your passport, DS-160 confirmation, photo, appointment confirmation and any supporting documents (proof of ties to the UK, employment letter, financial evidence). 5. If approved, the visa is posted to you 1-2 weeks after the interview. If refused, the fee is not refunded.

An approved ESTA is not a guarantee of entry. Neither is a valid B1/B2 visa. Final admission is at the discretion of the US Customs and Border Protection (CBP) officer at the port of entry - in the Vegas case, that's Harry Reid International Airport (LAS).

Standard entry process at LAS: - Present passport to CBP officer - Fingerprints scanned, facial photo taken - Officer asks: purpose of visit, length of stay, where staying, return flight date, employment - Officer either admits (green light) or sends to secondary inspection (a separate room with longer wait)

Reasons a CBP officer refuses entry despite valid ESTA/visa: - Answers inconsistent with itinerary (saying "tourism" but carrying company laptop with visible corporate badge) - Suspected intent to work or stay beyond 90 days - Undisclosed prior US immigration issue that surfaces in the database check - Undisclosed criminal record

If refused, you're held in secondary inspection and put on the next available flight home at your cost. Your ESTA is revoked; future entry usually requires a B1/B2 visa.

The UK Foreign Office notes CBP officers can inspect electronic devices, emails, text messages, and social media activity. This is legal under US law; there is no requirement to notify you in advance.

Denial is rare. The published approval rate for ESTA from UK passport holders is above 99%. When denial happens, the two-word system response is "Travel Not Authorized" with no explanation of why.

Common denial triggers (from the DHS review process): - Prior US visa denial not disclosed on the ESTA form - Prior arrest or caution (yes, even a UK police caution counts) not disclosed - Data mismatch (name spelled differently on ESTA vs passport) - Machine-learning risk flag (opaque)

If denied, your route is a B1/B2 visa application at the US Embassy in London. Cost US$185. Wait 3-6 weeks for the interview slot, 1-2 weeks post-interview for visa return.

For a group trip: if the person planning it (the hen, stag, or bride) gets denied, they have to either apply for B1/B2 or hand off organisation to another guest. The 4-week-out ESTA check every group should run is exactly to catch this in time. Denials that surface 5 days before departure become expensive problems.