Belfast has two airports — Belfast International (BFS) and George Best Belfast City (BHD) — and both put rental desks in the arrivals hall with no shuttle for most brands. Northern Ireland has no Clean Air Zone and no toll roads, but there is one rule that catches visitors out: driving into the Republic of Ireland needs a declared cross-border fee, or your insurance can be void. Compare suppliers on DiscoverCars first.
Key Takeaways
- Belfast International (BFS) has five rental desks inside Arrivals; Belfast City (BHD) is a compact single terminal.
- Northern Ireland has no Clean Air Zone, no LEZ and no toll roads.
- Crossing into the Republic needs a declared cross-border fee (£30 / €25–€50) – undeclared crossings can void your CDW.
- Many NI suppliers prohibit taking the car to Great Britain by ferry.
- The Giant’s Causeway is ~57–61 miles, about 1h15 direct.
Which Belfast Airport Should You Rent From?
| Airport | Code | Rental desk access |
|---|---|---|
| Belfast International | BFS | Five desks inside the Arrivals Hall; cars a short walk. Hertz sits at the Main Stay car park (2 min walk). |
| George Best Belfast City | BHD | Compact single terminal; Avis, Budget, Europcar, Hertz and National in arrivals. Sixt may be off-airport. |
BHD’s proximity to the centre is convenient if you only need a car for part of your trip. As with any UK airport, confirm the exact pickup point on your voucher — Sixt is the least consistent across both airports.
Driving Into the Republic of Ireland: Declare It or Void Your Cover
This is the single most important thing to get right when renting in Belfast. Cross-border driving into the Republic is normally permitted, but it must be declared and paid for at pickup:
- The fee — Budget Northern Ireland charges £30 for cross-border coverage; other suppliers typically charge €25–€50. It is a flat rate for the whole rental, not per crossing, and is non-refundable even if you never cross.
- The insurance trap — if your agreement says “Northern Ireland only”, crossing the border voids your CDW and insurance, whatever a desk agent told you verbally. Get the cross-border cover written onto the rental agreement.
- Recovery — the fee also funds cross-border vehicle recovery. Break down south of an undeclared border and repatriation is at your own cost.
- No checkpoint — the border is unmarked, so it is genuinely easy to cross by accident. Southbound, road signs switch from mph to km/h.
Also note that many Northern Ireland suppliers prohibit taking the car to Great Britain by ferry (Budget restricts to NI and the Republic only). If your trip spans the Irish Sea, two separate rentals is usually cheaper and simpler than one.
Best Road Trips From Belfast
| Route | Distance | Time |
|---|---|---|
| Giant’s Causeway (direct via M2/A26) | ~57–61 mi | ~1h15–1h20 |
| Causeway Coastal Route (Belfast to Derry) | ~120 mi | ~4h driving; allow 2 days |
| Causeway Coastal Route with all nine loops | +256 mi | Several days |
The Causeway Coastal Route is one of the best coastal drives in the UK and Ireland, and it is the main reason to rent a car in Belfast rather than rely on tours.
UK Rental Rules That Apply in Belfast
The UK drives on the left, and most rental fleets are manual transmission — automatics are less common, cost roughly 10–30% more, and should be booked well in advance. A US or other English-language licence is valid for UK driving for up to 12 months from entry, and an International Driving Permit isn’t legally required for US licence holders, though some suppliers still ask, so check your voucher.
UK rentals bundle a Collision Damage Waiver (CDW) into the base rate, which caps your liability at an Excess (the UK term for a deductible) rather than the car’s full value. CDW typically excludes tyres, the windscreen, the undercarriage, and mirrors — the gap an Excess Waiver closes. Minimum age is generally 21, with a young driver surcharge of about £15–£40 per day for drivers aged 21–24; see our full guide to rental car age requirements.
How Much Does a Rental Car Cost in Belfast?
Expect roughly £25 to £60 per day for an economy car in Belfast, with airport pickups running about 18% higher than city-centre branches. Automatics carry a premium and limited stock, so book early. Add the cross-border fee if your itinerary includes the Republic. Comparing every supplier at once on DiscoverCars is the quickest way to see who is cheapest for your dates and age.
Tips for Renting a Car in Belfast
- If you might cross into the Republic, declare it at pickup and get it on the agreement.
- Check whether your rental forbids taking the car to Great Britain by ferry.
- Northern Ireland drives on the left, uses pounds sterling and posts limits in mph – the same as the rest of the UK.
- Allow two days for the full Causeway Coastal Route rather than rushing it.
- Fuel, especially diesel, is usually cheaper in Northern Ireland than in the Republic.
Ready to compare Belfast rental prices?
Frequently Asked Questions
Do UK rental cars come with automatic transmission?
Most UK rental fleets are manual by default. Automatics are available but less common, typically cost 10 to 30% more per day, and should be booked well in advance because supply is limited, especially outside the largest cities.
Is a US driving licence valid for renting a car in Belfast?
Yes. A US licence is valid for driving in the UK for up to 12 months from entry because it is in English, and an International Driving Permit is not legally required. Some rental companies still request one, so confirm with your supplier before you travel.
What does ‘Excess’ mean on a UK car rental agreement?
Excess is the UK term for a deductible: the amount you remain liable for if the car is damaged, even with the standard Collision Damage Waiver included in your rate. Many renters buy an Excess Waiver to reduce or remove that liability.
Can you drive a Belfast rental car into the Republic of Ireland?
Usually yes, but it must be declared at pickup and a cross-border fee paid, typically £30 or €25 to €50 as a flat rate for the whole rental. If your agreement says ‘Northern Ireland only’, crossing the border voids your CDW and insurance.
Is renting a car in Northern Ireland different from the rest of the UK?
Mostly no: Northern Ireland drives on the left, uses pounds sterling, and posts speed limits in mph, with no Clean Air Zones or toll roads. The differences are the cross-border fee for the Republic and that many suppliers ban taking the car to Great Britain.
How far is Belfast from the Giant’s Causeway?
About 57 to 61 miles, roughly 1 hour 15 minutes direct via the M2 and A26. Taking the scenic Causeway Coastal Route instead adds around 30 minutes each way and is well worth it, with the full Belfast-to-Derry route best spread over two days.
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