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Cheap flights from Southampton to Northern Ireland from £25

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BFS
24 Aug — 31 Aug1
1 adult

Cheap flight deals from Southampton to Northern Ireland

Keep the following information in mind while searching for Southampton to Northern Ireland flight deals. Data was last updated 19 August 2025.

Round-trip from

£52

One-way from

£25

Popular in

July

Cheapest in

January

Average price

£92

Good round-trip deal

£91 or less

Good one-way deal

£54 or less
easyJet
  • easyJet
  • 2/10-9/10
  • Nonstop
  • 2h 35m total
  • Southampton to Northern Ireland
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easyJet
  • easyJet
  • 28/8
  • Nonstop
  • 1h 20m total
  • Southampton to Northern Ireland
Search Deals
Highest demand for flights based on searches. 30% potential increase in price (£20 potential increase over avg. return price).
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Cheapest flight prices on average. 8% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Southampton Eastleigh to Northern Ireland.
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Price to beat on a one-way flight from Southampton Eastleigh to Northern Ireland.
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Find flight deals from Southampton to Northern Ireland

Cheapest flights from Southampton to Northern Ireland
Explore the most affordable flight options available from Southampton to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Thu 2/1015:05SOU - BFS
Nonstop1h 20measyJet
Thu 9/1013:05BFS - SOU
Nonstop1h 15measyJet
Deal found 18/8£52
Fri 3/1012:15SOU - BFS
Nonstop1h 20measyJet
Fri 10/1010:30BFS - SOU
Nonstop1h 15measyJet
Deal found 19/8£64
Fri 5/912:00SOU - BFS
Nonstop1h 20measyJet
Sun 7/907:00BFS - SOU
Nonstop1h 15measyJet
Deal found 18/8£74
Sat 13/908:25SOU - BFS
1 stop23h 45measyJet
Fri 26/910:40BFS - SOU
Nonstop1h 15measyJet
Deal found 18/8£80
Mon 8/911:50SOU - BFS
Nonstop1h 20measyJet
Sat 13/613:35BFS - SOU
Nonstop1h 15measyJet
Deal found 18/8£81
Thu 25/915:05SOU - BFS
Nonstop1h 20measyJet
Fri 26/922:05BFS - SOU
1 stop9h 50measyJet
Deal found 18/8£86
Mon 22/911:50SOU - BFS
Nonstop1h 20measyJet
Fri 26/910:40BFS - SOU
Nonstop1h 15measyJet
Deal found 19/8£89
Sat 1/1108:55SOU - BHD
Nonstop1h 40mAer Lingus
Sat 8/1106:40BHD - SOU
Nonstop1h 45mAer Lingus
Deal found 18/8£89
Thu 25/915:45SOU - BHD
Nonstop1h 35mAer Lingus
Fri 26/906:40BHD - SOU
Nonstop1h 45mAer Lingus
Deal found 17/8£92
Sat 1/1108:55SOU - BHD
Nonstop1h 40mAer Lingus
Wed 5/1114:40BHD - SOU
Nonstop1h 35mAer Lingus
Deal found 18/8£94
Wed 29/1008:55SOU - BHD
Nonstop1h 40mAer Lingus
Sun 9/1106:40BHD - SOU
Nonstop1h 45mAer Lingus
Deal found 18/8£95
Thu 18/915:05SOU - BFS
Nonstop1h 20measyJet
Thu 25/913:05BFS - SOU
Nonstop1h 15measyJet
Deal found 19/8£98

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton to Northern Ireland 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 19 August 2025.
Use the filters below to find and compare flights from Southampton to Northern Ireland that are best for you.

Fly from

Southampton

Fly to

Northern Ireland

Route

Depart

Return

Price

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 2/10

15:05-16:25

Nonstop1h 20m

Belfast Intl

Thu 9/10

13:05-14:20

Nonstop1h 15m

£52

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 3/10

12:15-13:35

Nonstop1h 20m

Belfast Intl

Fri 10/10

10:30-11:45

Nonstop1h 15m

£64

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 5/9

12:00-13:20

Nonstop1h 20m

Belfast Intl

Sun 7/9

07:00-08:15

Nonstop1h 15m

£74

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 13/9

08:25-08:10

1 stop23h 45m

Belfast Intl

Fri 26/9

10:40-11:55

Nonstop1h 15m

£80

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 8/9

11:50-13:10

Nonstop1h 20m

Belfast Intl

Sat 13/6

13:35-14:50

Nonstop1h 15m

£81

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 25/9

15:05-16:25

Nonstop1h 20m

Belfast Intl

Fri 26/9

22:05-07:55

1 stop9h 50m

£86

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 6/9

10:45-12:05

Nonstop1h 20m

Belfast Intl

Sun 7/9

07:00-08:15

Nonstop1h 15m

£86

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sat 1/11

08:55-10:35

Nonstop1h 40m

Belfast City

Sat 8/11

06:40-08:25

Nonstop1h 45m

£89

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Thu 25/9

15:45-17:20

Nonstop1h 35m

Belfast City

Fri 26/9

06:40-08:25

Nonstop1h 45m

£92

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sat 1/11

08:55-10:35

Nonstop1h 40m

Belfast City

Wed 5/11

14:40-16:15

Nonstop1h 35m

£94

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 34 results
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Best time to book a flight from Southampton to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Southampton 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 Southampton to Northern Ireland

What is the cheapest month to book a flight from Southampton to Northern Ireland?

Currently, January is the cheapest month in which you can book a flight from Southampton to Northern Ireland (average of £67). Flying from Southampton to Northern Ireland 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 SOU to NIR?

Find hourly flight availability from Southampton to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Southampton to Northern Ireland as you normally would.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. 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 Northern Ireland. Reviews last updated 19 August 2025.
Read through reviews of airlines operating flights from Southampton to Northern Ireland, such as Aer Lingus and easyJet. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,225 reviews
Check prices

Overall

7.2

Boarding

7.3

Comfort

7.1

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
1,225 reviews
Aer Lingus
7.2
Good
1,225 reviews
Check prices

Overall

7.2

Boarding

7.3

Comfort

7.1

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
1,225 reviews
Check prices

Overall

7.2

Boarding

7.3

Comfort

7.1

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 Southampton to Northern Ireland. 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 Southampton to Northern Ireland?

    Most people fly from Southampton Eastleigh (SOU) if they book a flight from Southampton to Northern Ireland. Southampton Eastleigh is conveniently located just 3.5 mi from Southampton’s city center.

  • How long is the flight from Southampton to Northern Ireland?

    There are many flights that can get you from Southampton to Northern Ireland in 1h 20m. Fly via easyJet or Aer Lingus to get the fastest option. Southampton and Northern Ireland are separated by a distance of 326 mi. Generally, flights for this route are direct.

  • What are the cheapest flights from Southampton to Northern Ireland?

    On average you can expect to pay £94 for a flight from Southampton to Northern Ireland. The cheapest flight overall is £19 while the most popular route, (Southampton Eastleigh - Belfast Intl) is currently priced at £36.

  • Can I find deals for flights from Southampton to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Southampton to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Southampton to Northern Ireland?

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

  • Can I find deals for business class flights from Southampton to Northern Ireland?

    Yes. Cheapflights offers flight deals from Southampton to Northern Ireland 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 Southampton to Northern Ireland?

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

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Alternative routes for Southampton to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Southampton to Northern Ireland

Discover the top 2 airlines that operate flights from Southampton to Northern Ireland. 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 19 August 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£32Average£68FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£61Average£104FlexibilityNo 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 Southampton to Northern Ireland?

Cheapflights helps you search for flights from Southampton to Northern Ireland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Northern Ireland?

Cheapflights helps you find that perfect flight to Northern Ireland from Southampton by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Southampton to Northern Ireland with no change fees?

Certainly. Search results for flights to Northern Ireland from Southampton shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Southampton to Northern Ireland become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Northern Ireland from Southampton today and book when prices fit your budget.

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