Flights to Belfast: Cheapest Airports, Best Booking Times and How to Save in 2026

Belfast is one of the better-value city breaks in the UK and Ireland, largely because it is served by two airports and a mix of low-cost and full-service airlines. Fares can be very cheap if you book the right airport on the right day — and surprisingly expensive if you do not. This guide covers both Belfast airports, the Dublin alternative, when to book, the cheapest months, and how to keep the total cost down.

Use the search box further down to compare live fares for your dates.

Belfast City or Belfast International?

Belfast has two airports and they behave very differently.

• George Best Belfast City (BHD) — about 10 minutes from the city centre. Mostly UK domestic routes with full-service and hybrid carriers. Fares are often slightly higher, but the convenience is hard to beat: a short bus or taxi ride and you are downtown.
• Belfast International (BFS) — roughly 30 minutes northwest of the city by road. This is the low-cost base with the broadest European network and typically the cheapest headline fares.

Ground transfer costs

• BHD: frequent airport bus into the city, or a short taxi ride. Cheap either way.
• BFS: an express coach runs into the city centre and takes around 30–40 minutes. Taxis cost considerably more.

For a solo traveller with hand luggage, the cheaper fare from BFS almost always wins. For a family of four, four coach fares each way can wipe out a small saving — price the whole journey, not just the flight.

Don't overlook Dublin

Dublin Airport (DUB) is about two hours from Belfast by direct coach, and it has a far bigger long-haul network including transatlantic service. If you are flying in from North America, the Middle East or further afield, compare:

• Flying into Dublin and taking the coach north.
• Flying into a UK hub such as London or Manchester and connecting to Belfast.
• A direct or one-stop routing into BFS.

For long-haul travellers the Dublin option frequently saves money, and the coach is inexpensive and runs regularly. For short European hops, Belfast's own airports are usually cheaper once you account for the transfer.

When to book flights to Belfast

• UK domestic and Irish routes: 3 to 8 weeks ahead. These are short, high-frequency routes and prices rise as the plane fills.
• European routes: 4 to 10 weeks ahead is the usual sweet spot.
• Peak periods: summer, Christmas, Easter and the St Patrick's Day weekend should be booked 3 to 6 months out.

Timing tricks that work

• Midweek is cheaper. Tuesday and Wednesday departures consistently beat Friday and Sunday, which carry both weekend-break and business demand.
• Avoid Friday evening, the single most expensive slot on UK domestic routes.
• Early and late flights are usually the cheapest of the day.
• Search a whole week. Moving your outbound by a day often saves more than switching airline.

Cheapest months to fly to Belfast

• Cheapest: mid-January to mid-March, and November. Weather is wet and cool, but city-break prices — flights and hotels — are at their lowest.
• Best value: late April to early June, and September. Long days, greener landscapes, milder rain, and fares below peak.
• Most expensive: July and August, Christmas and New Year, Easter, and the weekend around St Patrick's Day.

Northern Ireland's weather is changeable all year, so pack layers and a waterproof regardless of when you go. Shoulder season gives you most of the summer experience — including the Causeway Coast — without summer prices.

Baggage and the real cost of a cheap fare

Low-cost carriers dominate Belfast International, and their pricing model relies on extras.

• Cabin bag: basic fares often include only a small under-seat bag. The full-size cabin bag is usually a paid upgrade.
• Checked bag: prepay online. Airport fees are dramatically higher.
• Seat selection: optional. Skip it if you don't mind where you sit.
• Check-in: always check in online before you leave; some carriers charge for airport check-in.
• Priority boarding: rarely worth it on a short flight.

Add the bags you actually need to every option before comparing. A hybrid carrier from BHD with a bag included sometimes beats a stripped-back BFS fare.

What to do once you arrive

Belfast rewards a short trip, and most of it is walkable:

• Titanic Belfast — the flagship attraction, built on the slipways where the ship was constructed. Book timed entry ahead.
• Cathedral Quarter — bars, live traditional music and street art in a compact area.
• Political murals and black-taxi tours — the most direct way to understand the city's recent history.
• Crumlin Road Gaol — a well-run guided tour of the Victorian prison.
• Day trip to the Giant's Causeway and Causeway Coastal Route — under two hours away and the main reason many people visit. Tours run daily from the city, or hire a car for the day.
• Game of Thrones filming locations — the Dark Hedges and several coastal sites are within a day trip.

Two to three nights covers the city plus one coastal day trip comfortably.

Practical notes

• Northern Ireland uses the pound sterling, while the Republic of Ireland uses the euro. If you are crossing the border for a day trip, carry both or rely on contactless.
• There are no routine border checks between Northern Ireland and the Republic, but bring your passport when crossing.
• Most visa-exempt visitors to the UK now need an Electronic Travel Authorisation (ETA). Check official guidance for your nationality and apply well before you travel.
• Public transport within Belfast is inexpensive; a car is only worth it for the coastal route.

Booking checklist

1. Compare BHD and BFS on the same dates — and Dublin if you are long-haul. 2. Price the transfer from each airport before choosing. 3. Search a full week and target midweek departures. 4. Book domestic 3–8 weeks ahead, European 4–10 weeks ahead. 5. Add baggage to every quote before comparing totals. 6. Travel in spring or September for the best balance of weather and price. 7. Sort your ETA early if you need one.

Compare live fares to Belfast

Fares change daily, so run your dates through the search widget below. If you are flexible, the live price map shows where and when fares are lowest, and you can compare other routes from the homepage.

Planning a wider UK trip? Read our Flight tickets to the UK guide, and for transatlantic routes see the New York, Los Angeles and San Francisco guides.

Frequently asked questions

Which Belfast airport should I fly into?

Belfast International (BFS) usually has the cheapest headline fares and the widest European network, but it is around 30 minutes from the city. Belfast City (BHD) is only 10 minutes from the centre and better for UK domestic routes. Price the flight plus the transfer for both before you choose.

Is it cheaper to fly to Dublin and travel to Belfast?

For long-haul travellers, often yes. Dublin has a far larger intercontinental network, and a direct coach reaches Belfast in about two hours for a modest fare. For short European hops, flying straight into Belfast is usually cheaper once you account for the coach and the extra travel time.

How far ahead should I book?

Three to eight weeks for UK domestic and Irish routes, and four to ten weeks for European ones. Book three to six months ahead for summer, Easter, Christmas and the St Patrick's Day weekend.

What is the cheapest month to fly to Belfast?

Mid-January to mid-March and November are the cheapest. Late April to early June and September give the best mix of price and weather.

Is Belfast expensive to visit?

It is generally cheaper than London, Dublin or Edinburgh for food, drink and accommodation, which is a large part of its appeal as a short break. Many highlights, including the murals and the city centre itself, cost nothing.

How many days do I need in Belfast?

Two to three nights is enough for the city plus one day trip to the Giant's Causeway and the Causeway Coastal Route. Add a night if you want to explore more of the coast or head to Derry.

Do I need a passport travelling from Great Britain to Northern Ireland?

It is a domestic UK flight, but airlines require photo identification and most will accept or expect a passport, so carry one. Bring it too if you plan to cross into the Republic of Ireland for a day trip.

What currency is used in Belfast?

Pound sterling. The Republic of Ireland uses the euro, so if you cross the border for a day trip carry both or rely on contactless payment, which is widely accepted on either side.

Do I need an ETA to visit Northern Ireland?

Most visa-exempt visitors to the UK now need an Electronic Travel Authorisation. Check the official UK government guidance for your nationality and apply well ahead of your trip rather than at the last minute.

Is a hire car necessary?

Not for the city, which is compact and walkable with cheap buses. A car is worth it for one day if you want to drive the Causeway Coastal Route at your own pace, though organised day tours from Belfast are a cheaper option for solo travellers.