Cheap Flights from Cardiff to Belfast

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Find the cheapest month or even day of the year to fly to Belfast

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Flight deals from Cardiff to Belfast

Looking for a cheap last-minute deal or the best return flight from Cardiff to Belfast? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Cardiff to Belfast

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Cardiff to Belfast flights are currently cheapest in September.

Direct flights from Cardiff to Belfast

Alternative Cardiff to Belfast routes

Looking for the cheapest, fastest or easiest route from Cardiff to Belfast? You could fly into the following airports instead.

Cardiff to Belfast: Flight information

The things to know before you go.
Cheapest flight foundRs17,905
Cheapest month to flySeptember
Average flight time1 hr, 28 mins
Most popular airlineAer Lingus
Average flights per week66

Finding cheap flights from Cardiff to Belfast: Frequently asked questions

There are 2 airports in Belfast: Belfast City and Belfast International.
The best price we found for a return flight from Cardiff to Belfast is Rs37,113. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 28 minutes is the average flight time from Cardiff to Belfast.
Aer Lingus, Emerald Airlines and British Airways fly direct from Cardiff to Belfast.
As of August 2025, there are 22 flights per week flying from Cardiff to Belfast.
The cheapest month to fly from Cardiff to Belfast is usually October.
If you're flying from Cardiff Airport, the cheapest airport near Belfast is Belfast City – which is 3.7 km away from the centre of Belfast. We've found flights into this airport from Rs37,113.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cardiff Airport to Belfast on Wednesday, 15 October 2025.
Yes – the average flight time is 1 hour and 28 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Belfast but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Belfast is around 40 days in advance, so don’t leave your flight to the last minute.
In August, the average temperature is usually around 14°C. August is typically the warmest month in Belfast, when it usually averages around 17°C. You can expect the least rain in May. The coldest month is January, with temperatures averaging 4°C. The rainiest month is October.
Currently, Aer Lingus offers the cheapest flight tickets to Belfast.

Travelling from Cardiff Airport (CWL) to Belfast: what you need to know

  • Cardiff (the location of Cardiff Airport) and Belfast share the same timezone — UTC+0.

  • Cardiff Airport (CWL) to George Best Belfast City Airport (BHD) is the most popular route, with seven flights a week to pick from. You can travel from CWL to BHD at 08:55 with Aer Lingus.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your CWL to Belfast flight.

  • Travelling during a peak period like school or public holidays? Expect longer lines at check-in and security. To play it safe, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • Start your journey at CWL and fly straight to George Best Belfast City Airport (BHD). That's where you can expect to land when searching for Cardiff Airport to Belfast tickets.

  • Get on board with Aer Lingus. This airline offers direct flights from Cardiff Airport to Belfast.

  • Travelling from central Cardiff to CWL takes about 1 hour 5 minutes on public transport. If you drive, ride-share or get a cab, you'll cover the 14 kilometres in 30 minutes or so, depending on traffic.

  • Want a relaxed start to your journey? Stay near CWL. Whether you're boarding an early flight from Cardiff Airport to Belfast or just don't like being rushed, these hotels are a convenient choice:

  • When it comes to Cardiff Airport's on-time performance, 66.16% of flights meet their scheduled arrival time.

How to find the cheapest flights from Cardiff Airport (CWL) to Belfast

  • Rs17,905 is currently the lowest price for a one-way Cardiff Airport to Belfast flight. Return flight tickets start from Rs37,113. These prices may change depending on demand and availability.

  • Get cheap flights from CWL to Belfast by booking two months ahead. According to our research, that's the best time for finding the biggest deals.

  • The best month for picking up cheap Cardiff Airport to Belfast tickets is June. Use the 'Whole month' tool to compare prices, then choose the dates that offer the biggest savings.

  • Finding a cheap flight from CWL to Belfast is easy with Price Alerts. All you need to do is set up one of these automatic notifications and we'll get in touch as soon as a better deal is available.

  • Pick your ideal arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from Cardiff Airport to Belfast by 'Cheapest,' 'Best' or 'Fastest.'

Airports in Belfast

Belfast International Airport (BFS)

  • Belfast International Airport (BFS) to central Belfast takes around 30 minutes to reach by car. The centre is roughly 32 kilometres away.

  • It takes around 2 hours if you're travelling by public transport.

  • If you have a late flight from Cardiff Airport to Belfast, few things beat the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and snoozing not long after at one of these accommodation options near BFS:

  • Explore without limits with a Belfast International Airport rental car. Book your wheels from Budget, Drivalia or Dollar and see more of Belfast and beyond.

  • To lock in the lowest price, book your ride from Belfast International Airport around three weeks ahead of your flight from CWL to Belfast.

George Best Belfast City Airport (BHD)

  • George Best Belfast City Airport (BHD) is around 8 kilometres from central Belfast. After your flight from Cardiff Airport to Belfast, it'll take you around 10 minutes to reach the heart of the city in a cab or ride-share.

  • If you travel by public transport, the journey will take you 20 minutes or so.

  • Following your CWL to Belfast flight, rest your head at a hotel near BHD. These are some great options that'll help you slip into relaxation mode:

  • Budget, Sixt and Alamo make picking up a George Best Belfast City Airport rental car quick and easy. These suppliers are located in or around the terminal and will have you ready to go in a flash.

  • Get exactly what you want. Booking your ride from BHD two weeks in advance often means better prices and a wider choice of vehicles.

Best time to go to Belfast

  • Carefully consider your dates before locking in your flight from Cardiff Airport to Belfast. The city buzzes in high season, but hotel rates are usually higher and attractions can be busy. Plan your trip to Belfast in low season if you prefer a more relaxed vibe.

  • Before locking in your Cardiff Airport to Belfast flight ticket, think about the kind of weather forecast you're hoping for. July is the warmest month in Belfast, with temperatures ranging from 10ºC to 19ºC.

  • Look for cheap tickets from CWL to Belfast in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between 1ºC and 8ºC on average.

More about Belfast

  • Once you've booked your flight from Cardiff Airport to Belfast, find a hotel that keeps you close to what you want to see. Make one of these accommodation options your base for exploring Belfast:

  • All great journeys should include a little sightseeing. Crumlin Road Gaol Visitor Attraction and Conference Centre, Titanic Belfast and Botanic Gardens are essential stops on your Belfast itinerary.

Explore more of United Kingdom

  • You've visited Belfast, now it's time to explore more of United Kingdom. Journey about 354 kilometres south-east to Birmingham to check off its top sights. From Cadbury World to The Library of Birmingham and National Sea Life Centre, there's plenty to keep you busy.

  • If you want to check out another great destination in United Kingdom, head for Bristol, about 418 kilometres south-east of Belfast. Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.