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Cheap flights from Cardiff to Belfast from £40

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BHD
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Cardiff Wales to Belfast are usually found in January or February, booked 34 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

Cheap flight deals from Cardiff to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Belfast (BF1). 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 16 September 2025.

Round-trip from

£97

One-way from

£40

Popular in

July

Cheapest in

January

Average price

£115
Aer Lingus
  • Aer Lingus
  • 22/10-23/10
  • Nonstop
  • 2h 45m total
  • Cardiff to Belfast
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Aer Lingus
  • Aer Lingus
  • 18/10
  • Nonstop
  • 1h 25m total
  • Cardiff to Belfast
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£9 potential increase over avg. return price).
Search Deals
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 September 2025
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Find flight deals from Cardiff to Belfast

Cheapest flights from Cardiff to Belfast
Explore the most affordable flight options available from Cardiff to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Wed 22/1012:00CWL - BHD
Nonstop1h 25mAer Lingus
Thu 23/1010:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 14/9£97
Thu 2/1012:00CWL - BHD
Nonstop1h 25mAer Lingus
Thu 9/1010:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 14/9£98
Mon 1/1212:00CWL - BHD
Nonstop1h 25mAer Lingus
Tue 2/1210:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 14/9£99
Sat 11/1012:00CWL - BHD
Nonstop1h 25mAer Lingus
Mon 13/1010:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 14/9£107
Sun 12/1012:00CWL - BHD
Nonstop1h 25mAer Lingus
Sun 19/1010:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 14/9£108
Mon 20/1012:00CWL - BHD
Nonstop1h 25mAer Lingus
Tue 21/1010:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 16/9£113
Tue 30/912:00CWL - BHD
Nonstop1h 25mAer Lingus
Fri 3/1007:00BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 15/9£115
Thu 9/1012:00CWL - BHD
Nonstop1h 25mAer Lingus
Thu 16/1010:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 15/9£121
Fri 14/1108:35CWL - BHD
Nonstop1h 25mAer Lingus
Sun 16/1110:10BHD - CWL
Nonstop1h 20mAer Lingus
Deal found 14/9£132
Fri 28/1122:25CWL - BHD
2 stops14h 50mMultiple Airlines
Mon 1/1210:10BHD - CWL
Nonstop1h 20mMultiple Airlines
Deal found 14/9£133
Wed 15/1020:30CWL - BFS
1 stop12h 30mMultiple Airlines
Wed 22/1007:25BFS - CWL
2 stops24h 00mMultiple Airlines
Deal found 15/9£135
Thu 4/1210:30CWL - BFS
2 stops12h 20mMultiple Airlines
Sun 7/1208:15BFS - CWL
1 stop9h 45mMultiple Airlines
Deal found 14/9£143

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Belfast 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 16 September 2025.
Use the filters below to find and compare flights from Cardiff to Belfast that are best for you.

Fly from

Cardiff

Fly to

Belfast

Route

Depart

Return

Price

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Wed 22/10

12:00-13:25

Nonstop1h 25m

Belfast City

Thu 23/10

10:10-11:30

Nonstop1h 20m

£97

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Thu 2/10

12:00-13:25

Nonstop1h 25m

Belfast City

Thu 9/10

10:10-11:30

Nonstop1h 20m

£98

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Mon 1/12

12:00-13:25

Nonstop1h 25m

Belfast City

Tue 2/12

10:10-11:30

Nonstop1h 20m

£99

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Fri 23/1

08:35-10:00

Nonstop1h 25m

Belfast City

Sun 25/1

10:10-11:30

Nonstop1h 20m

£105

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Sat 11/10

12:00-13:25

Nonstop1h 25m

Belfast City

Mon 13/10

10:10-11:30

Nonstop1h 20m

£107

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Sun 12/10

12:00-13:25

Nonstop1h 25m

Belfast City

Sun 19/10

10:10-11:30

Nonstop1h 20m

£108

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Tue 30/9

12:00-13:25

Nonstop1h 25m

Belfast City

Fri 3/10

07:00-08:20

Nonstop1h 20m

£115

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Sun 19/10

12:00-13:25

Nonstop1h 25m

Belfast City

Tue 21/10

10:10-11:30

Nonstop1h 20m

£115

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Wed 22/10

12:00-13:25

Nonstop1h 25m

Belfast City

Mon 27/10

10:10-11:30

Nonstop1h 20m

£121

CardiffBelfast

CWL - BHD

CWLBHD

Cardiff Wales

Thu 9/10

12:00-13:25

Nonstop1h 25m

Belfast City

Thu 16/10

10:10-11:30

Nonstop1h 20m

£121

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 24 results
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2
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Best time to book a flight from Cardiff to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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

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

Use this chart to determine the optimal time to book a return flight from Cardiff to Belfast. Price data was last updated on 12 September 2025.

The price you pay for your flight from Cardiff to Belfast may vary depending on when you book. For the best chance of a lower fare, look to book 23 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Cardiff to Belfast (average of £67). Flying from Cardiff to Belfast 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. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 September 2025.

When flying from Cardiff to Belfast, 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?

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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. Reviews last updated 16 September 2025.
Check out reviews from past customers who have flown with Aer Lingus and easyJet from Cardiff to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Comfort

7.1

Overall

7.2

Entertainment

6.9

Food

6.5

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,274 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Comfort

7.1

Overall

7.2

Entertainment

6.9

Food

6.5

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
easyJet
6.9
Okay
1,820 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Comfort

7.1

Overall

7.2

Entertainment

6.9

Food

6.5

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Belfast. 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?

    Located just 9.1 mi from the city center, Cardiff Wales is the airport most travelers will use when flying to Belfast from Cardiff. Booking flights from Cardiff Wales (CWL) to Belfast should be relatively easy as there are 0 daily outbound flights to Belfast from 2 different airlines.

  • How long is the flight from Cardiff to Belfast?

    There are many flights that can get you from Cardiff to Belfast in 1h 25m. Fly via Aer Lingus to get the fastest option. Cardiff and Belfast are separated by a distance of 246 mi. All flights are typically direct.

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

    Cheapflights users have booked flights from Cardiff to Belfast round-trip from £77. Another airline that can offer you cheap pricing is Aer Lingus. easyJet is priced at 34% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cardiff to Belfast 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?

    Currently, January is the cheapest month in which you can book a flight from Cardiff to Belfast (average of £67). Flying from Cardiff to Belfast 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Cardiff to Belfast

Discover the top 2 airlines that operate flights from Cardiff to Belfast. 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 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£77Average£95FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£86Average£118FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

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

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

Need flexible booking options for your flight to Belfast from Cardiff? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Cardiff to Belfast flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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