Before You Fly: What US Visitors Need to Know About Ireland
Planning a trip to Ireland from the US? A handful of small details — border rules, currency switches, driving quirks — trip up more visitors than anything else. Here’s everything you need to know before you land, in one place.
These ireland travel tips for americans will help ensure a smooth journey.
The Quick Version
| Topic | Republic of Ireland | Northern Ireland |
|---|---|---|
| Currency | Euro (€) | British Pound (£) |
| Speed limits | Kilometers per hour | Miles per hour |
| Entry requirement | Standard passport rules | UK ETA required |
| Border | — | Invisible, but legally real |
Do You Need a UK ETA?
If any part of your trip includes Northern Ireland, yes — even if you’re only passing through on a drive north from Dublin. The UK Electronic Travel Authorisation is now mandatory for all US citizens entering Northern Ireland, and it’s checked electronically against your passport.
There’s no physical checkpoint at the border, so it’s easy to assume the rule doesn’t apply if you’re driving rather than flying in — but it does. As of February 25, 2026, airlines are verifying ETA status before US passengers even board, so this isn’t something to sort out on arrival.
- Cost: around $25
- Valid for: two years, or until your passport expires, whichever comes first
- Apply well ahead of your trip so there’s no last-minute scramble
One Island, Two Countries
Most US visitors fly into Dublin and drive to various corners of the country. If driving north to the Causeway Coast — about a two-hour drive — since Dublin offers more direct flights from the US. Flying directly into Belfast (either Belfast International or George Best Belfast City Airport) is the alternative, and it puts you closer to the coast from the moment you land. Both are good options.
What catches people out is that the border between the Republic and Northern Ireland is invisible — no checkpoint, no signage — but three things quietly change the moment you cross it:
- Currency switches from Euro to British Pounds
- Speed limits switch from km/h to mph
- Your rental car’s dashboard may not switch with you — it’s worth knowing which unit your speedometer is actually showing at any given time
Money
In the Republic, you’re spending Euro. In Northern Ireland, it’s British Pounds. US dollars aren’t accepted anywhere — that’s not an exaggeration, don’t expect to pay cash in dollars and get change, or to use them “just in case.”
Personally, I haven’t carried cash for at least 4 years now as everything is tap to pay. Cards and Apple Pay are accepted almost everywhere in both currencies, but it’s worth carrying roughly £50 or €50 in cash for rural parking meters, small coastal cafés, and trailheads where card readers might be unreliable.
There’s a common assumption amongst US visitors that Europe doesn’t do tipping — that’s not accurate. Tipping is real here regardless of whether you’re a local or a visitor, it’s just not at US levels. 10% is the standard rate, and 20% is generous — you’ll rarely see anyone go beyond that, here or elsewhere in Europe.
Eating Out
Restaurant prices here can add up quickly. Don’t overlook pubs — a huge number of them serve genuinely good, freshly cooked food, not just bar snacks, and it’s usually a good bit cheaper than a restaurant or hotel dining room. You don’t need to seek out a “restaurant” every time; some of the best meals of a trip come from an ordinary-looking pub.
Picking Up Your Rental Car at Dublin Airport
When you book your rental car, look for the option to collect it from the airport terminal itself rather than an off-site compound. It costs little to nothing extra and saves you waiting on a shuttle bus to and from the rental compound — worth doing every time.
Once you drive out of the airport, the first thing you’ll meet is a three-lane roundabout with traffic lights. Roundabouts here are simple and efficient once you know the rule, but they catch a lot of US visitors out on their first attempt — it’s worth looking up how they work before you land rather than figuring it out at the wheel. Locals know to watch out for rental cars on this particular roundabout but make sure you are in the correct lane and use your indicators.
Driving
A few local rules of the road worth knowing before you pick up a rental:
- We drive on the left.
- Give way to the right at roundabouts
- Missed your exit? Just keep circling until you can safely come off — every driver does this at some point, and it’s completely normal
- On narrow roural roads, a small palm-up wave is the standard way to thank another driver for pulling in to let you pass. The same goes anywhere someone lets you out into traffic — a small wave of thanks is the norm here, and people notice when it’s missing
- If you’re driving slowly — and a lot of visitors do, taking in the scenery — keep an eye on your mirror. If a line of local traffic is building up behind you, pull in somewhere safe and let them pass, then carry on at your own pace. It’s a small courtesy that avoids frustrating everybody else on the road
- Get zero-excess or Super CDW insurance. It’s worth every cent. The most common damage seen on rental cars here is scraped side mirrors from squeezing past stone walls on narrow roads, and wheel or tire damage from driving too close to the curb — both easy to avoid once you’re used to the roads, but common enough for first-timers that the extra cover pays for itself
Uber Isn’t What You Expect
If you’re used to Uber from the US, it works differently here. Under Irish law, the Uber app doesn’t dispatch private drivers — it simply books you a regular licensed taxi. Fares and cars are standard Irish taxis; the app is just the ordering method.
Staying Connected
Since Brexit, Northern Ireland (UK) and the Republic (EU) sit in separate mobile roaming zones for most US carriers. A plan advertised as covering “Ireland” or “Europe” may quietly exclude Northern Ireland — check with your carrier specifically before you fly, not after.
Download your Google Maps offline areas in advance, too. Signal may drop out completely in rural mountainous places along a lot of the remote headlands on the coast of Northern Ireland.
Local SIM cards can be purchased from vending machines on arrival at Dublin airport.
What to Pack
Layer for the weather, not the forecast. Three layers work best: a moisture-wicking base, a warm mid-layer, and a genuinely waterproof outer shell — not water-resistant, waterproof, there’s a real difference on the coast. Footwear with good grip matters too if you’re walking cliff paths.
Check your hair tools before you pack them. Northern Ireland and the Republic both run on 230v power. Most US hair dryers and straighteners aren’t dual-voltage, and a plug adaptor alone won’t save them — they’ll simply burn out. Check the label: if it doesn’t say 110–240v, leave it home and pick up an inexpensive one locally at DID, Currys, Harvey Norman, Boots or Expert once you land.
If You’re Eloping or Getting Married Here
One rule worth building into your packing list specifically: keep your wedding outfit in your carry-on, always. Checked bags get delayed or misrouted on transatlantic routes more often than anyone wants to think about, and it’s not a risk worth taking with the one thing you can’t easily replace on the day.
Have questions about planning your elopement or wedding in Ireland? Get in touch — happy to help you sort out the details.
