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Cheap flights from Cardiff to Belfast Intl Airport from £81

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BFS
27 Aug — 3 Sep1
1 adult

Cheapflights Tip: The best prices from Cardiff Wales to Belfast Intl are usually found in January or November, booked 62 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

Cheap flight deals from Cardiff to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Belfast Intl (BFS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 August 2025.

Round-trip from

£144

One-way from

£81

Popular in

April

Cheapest in

January

Average price

£123
10/9-14/9
  • 10/9-14/9
  • 3 total stops
  • 26h 20m total
  • Cardiff to Belfast
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17/9
  • 17/9
  • 1 total stop
  • 12h 30m total
  • Cardiff to Belfast
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£3 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Cardiff to Belfast Intl

Cheapest flights from Cardiff to Belfast Intl
Explore the most affordable flight options available from Cardiff to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.

Wed 10/920:30CWL - BFS
1 stop12h 30mMultiple Airlines
Sun 14/922:55BFS - CWL
2 stops13h 50mMultiple Airlines
Deal found 21/8£144
Wed 17/920:30CWL - BFS
1 stop12h 30mMultiple Airlines
Wed 24/915:25BFS - CWL
2 stops16h 00mMultiple Airlines
Deal found 20/8£161
Tue 16/916:20CWL - BFS
2 stops14h 45mMultiple Airlines
Wed 17/917:05BFS - CWL
2 stops14h 20mMultiple Airlines
Deal found 20/8£162
Fri 12/912:25CWL - BFS
2 stops19h 30mMultiple Airlines
Sun 14/922:55BFS - CWL
2 stops13h 50mMultiple Airlines
Deal found 21/8£166
Fri 5/912:25CWL - BFS
2 stops19h 30mMultiple Airlines
Sun 7/922:55BFS - CWL
2 stops13h 50mMultiple Airlines
Deal found 21/8£173
Sat 27/909:00CWL - BFS
2 stops13h 35mMultiple Airlines
Sun 28/923:30BFS - CWL
2 stops13h 15mMultiple Airlines
Deal found 21/8£176
Tue 9/916:20CWL - BFS
2 stops14h 30mMultiple Airlines
Tue 16/913:40BFS - CWL
1 stop18h 15mMultiple Airlines
Deal found 20/8£178
Sat 4/1009:00CWL - BFS
2 stops13h 35mMultiple Airlines
Sat 11/1016:30BFS - CWL
2 stops18h 05mMultiple Airlines
Deal found 20/8£182
Tue 4/1116:45CWL - BFS
3 stops29h 05mMultiple Airlines
Fri 7/1121:05BFS - CWL
2 stops26h 15mMultiple Airlines
Deal found 20/8£208

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Belfast Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 August 2025.
Use the filters below to find and compare flights from Cardiff to Belfast Intl Airport that are best for you.

Fly from

Cardiff

Fly to

Belfast Intl

Route

Depart

Return

Price

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Wed 10/9

20:30-09:00

1 stop12h 30m

Belfast Intl

Sun 14/9

22:55-12:45

2 stops13h 50m

£144

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Wed 17/9

20:30-09:00

1 stop12h 30m

Belfast Intl

Wed 24/9

15:25-07:25

2 stops16h 00m

£161

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Tue 16/9

16:20-07:05

2 stops14h 45m

Belfast Intl

Wed 17/9

17:05-07:25

2 stops14h 20m

£162

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Fri 12/9

12:25-07:55

2 stops19h 30m

Belfast Intl

Sun 14/9

22:55-12:45

2 stops13h 50m

£166

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Fri 5/9

12:25-07:55

2 stops19h 30m

Belfast Intl

Sun 7/9

22:55-12:45

2 stops13h 50m

£173

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Sat 27/9

09:00-22:35

2 stops13h 35m

Belfast Intl

Sun 28/9

23:30-12:45

2 stops13h 15m

£176

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Tue 9/9

16:20-06:50

2 stops14h 30m

Belfast Intl

Tue 16/9

13:40-07:55

1 stop18h 15m

£178

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Sat 4/10

09:00-22:35

2 stops13h 35m

Belfast Intl

Sat 11/10

16:30-10:35

2 stops18h 05m

£182

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Tue 4/11

16:45-21:50

3 stops29h 05m

Belfast Intl

Fri 7/11

21:05-23:20

2 stops26h 15m

£208

CardiffBelfast

CWL - BFS

CWLBFS

Cardiff Wales

Wed 17/9

20:30-09:00

1 stop12h 30m

£81

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 19 results
1
2

Best time to book a flight from Cardiff to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Cardiff with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to Belfast Intl Airport

How far ahead should I book a flight from Cardiff to Belfast Intl Airport?

Use this chart to determine the optimal time to book a return flight from Cardiff to Belfast Intl. Price data was last updated on 8 August 2025.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Cardiff to Belfast Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Cardiff to Belfast Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Cardiff to Belfast Intl Airport (average of £67). Flying from Cardiff to Belfast Intl Airport in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CWL to BFS?

Find hourly flight availability from Cardiff to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 August 2025.

When flying from Cardiff to Belfast Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 18% versus a flight at midday.

How much does it cost for a return flight from Cardiff to Belfast Intl Airport?

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast Intl. Reviews last updated 22 August 2025.
Get a feel of what it's like to fly with Aer Lingus and easyJet from Cardiff to Belfast Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.1
Good
1,228 reviews
Check prices

Overall

7.1

Food

6.5

Entertainment

6.9

Comfort

7.1

Boarding

7.3

Crew

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Aer Lingus
7.1
Good
1,228 reviews
Aer Lingus
7.1
Good
1,228 reviews
Check prices

Overall

7.1

Food

6.5

Entertainment

6.9

Comfort

7.1

Boarding

7.3

Crew

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
easyJet
6.9
Okay
1,818 reviews
Aer Lingus
7.1
Good
1,228 reviews
Check prices

Overall

7.1

Food

6.5

Entertainment

6.9

Comfort

7.1

Boarding

7.3

Crew

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Cardiff to Belfast Intl?

    Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly out of when you book flights from Cardiff to Belfast Intl. 2 airlines have flights from Cardiff Wales to Belfast Intl on a regular basis. Booking flights from Cardiff Wales to Belfast Intl should not be difficult; the airport handles an average of 0 outbound flights to Belfast Intl per day.

  • What are the cheapest airlines flying from Cardiff to Belfast Intl Airport round-trip?

    Our cheapest airline available from Cardiff to Belfast Intl Airport is easyJet. Our recent data shows that you can find tickets from as low as £61 on this airline. An additional option worth looking into is Aer Lingus, starting at £86. easyJet is 47% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Cardiff to Belfast Intl that include hotel bookings?

    Yes. In addition to deals on Cardiff to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to Belfast Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Belfast Intl.

  • Can I find deals for business class flights from Cardiff to Belfast Intl?

    Yes. Cheapflights offers flight deals from Cardiff to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cardiff to Belfast Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Cardiff to Belfast Intl Airport (average of £67). Flying from Cardiff to Belfast Intl Airport in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

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Alternative routes for Cardiff to Belfast Intl

See prices for flight routes from nearby airports that may be better suited for you.
Manchester to Belfast Intl flights
Manchester to Belfast City flights
Bristol to Belfast Intl flights
Bristol to Belfast City flights
Cardiff to Belfast City flights

Top 2 airlines flying from Cardiff to Belfast Intl

Discover the top 2 airlines that operate flights from Cardiff to Belfast Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 August 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£61Average£106FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£86Average£119FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Cardiff to Belfast Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast Intl from Cardiff today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Belfast Intl?

Cheapflights simply makes it quick and affordable to book flights from Cardiff to Belfast Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Cardiff to Belfast Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Cardiff to Belfast Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Cardiff to Belfast Intl become cheaper?

Not ready to book yet? You can track prices for flights from Cardiff to Belfast Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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