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Cheap flights from Northern Ireland to Southampton from £34

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 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SOU
20 Jan — 27 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Southampton

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Southampton
Explore the most affordable flight options available from Northern Ireland to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 December 2025.

Wed 24/1206:40BHD - SOU
Nonstop1h 45mAer Lingus
Sat 27/1208:55SOU - BHD
Nonstop1h 40mAer Lingus
Deal found 19/12£206
Wed 24/1206:40BHD - SOU
Nonstop1h 45mMultiple Airlines
Sat 27/1213:55SOU - BHD
1 stop24h 10mMultiple Airlines
Deal found 19/12£303
Wed 24/1206:30BHD - SOU
1 stop10h 30mKLM
Sat 27/1209:25SOU - BHD
1 stop7h 25mKLM
Deal found 19/12£311
Wed 24/1207:55BFS - SOU
1 stop3h 00mMultiple Airlines
Sat 27/1209:45SOU - BFS
1 stop21h 00mMultiple Airlines
Deal found 19/12£352

Find flight deals from Northern Ireland to Southampton

Keep the following information in mind while searching for Northern Ireland to Southampton flight deals. Data was last updated 21 December 2025.

Round-trip from

£105

One-way from

£34

Popular in

June

Cheapest in

January

Average price

£71

Good round-trip deal

£46 or less

Good one-way deal

£50 or less
Aer Lingus
  • Aer Lingus
  • 22/1-30/1
  • Nonstop
  • 3h 15m total
  • Northern Ireland to Southampton
Search Deals
easyJet
  • easyJet
  • 16/2
  • 1 total stop
  • 24h 35m total
  • Northern Ireland to Southampton
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Northern Ireland to Southampton Eastleigh.
Search Deals
Price to beat on a one-way flight from Northern Ireland to Southampton Eastleigh.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Southampton 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 21 December 2025.
Use the filters below to find and compare flights from Northern Ireland to Southampton that are best for you.

Fly from

Northern Ireland

Fly to

Southampton

Route

Depart

Return

Price

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 22/1

10:10-11:50

Nonstop1h 40m

Southampton Eastleigh

Fri 30/1

19:00-20:35

Nonstop1h 35m

£105

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 2/2

20:50-08:50

1 stop12h 00m

Southampton Eastleigh

Mon 9/2

19:55-16:15

2 stops20h 20m

£141

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Wed 29/4

14:40-16:15

Nonstop1h 35m

Southampton Eastleigh

Wed 6/5

08:55-10:35

Nonstop1h 40m

£146

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 22/1

20:00-15:35

2 stops19h 35m

Southampton Eastleigh

Fri 30/1

19:00-20:35

Nonstop1h 35m

£159

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Tue 3/3

10:35-17:30

1 stop6h 55m

Southampton Eastleigh

Wed 4/3

09:25-12:45

1 stop3h 20m

£163

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 6/1

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Fri 9/1

17:45-09:20

1 stop15h 35m

£163

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Tue 13/1

06:30-17:30

1 stop11h 00m

Southampton Eastleigh

Tue 20/1

15:00-20:15

1 stop5h 15m

£185

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Thu 22/1

06:15-08:45

2 stops26h 30m

Southampton Eastleigh

Fri 30/1

12:00-20:25

1 stop8h 25m

£190

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Wed 4/2

19:55-17:20

2 stops21h 25m

Southampton Eastleigh

Wed 11/2

16:05-09:20

2 stops17h 15m

£190

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 20/2

10:10-11:50

Nonstop1h 40m

Southampton Eastleigh

Tue 24/2

08:55-10:35

Nonstop1h 40m

£229

Flights are sorted by cheapest return flights first.

Deals found on 21/12

Showing 1-10 of 22 results
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Best time to book a flight from Northern Ireland to Southampton

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

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

Currently, February is the cheapest month in which you can book a flight from Northern Ireland to Southampton (average of £14). Flying from Northern Ireland to Southampton in July is currently the most expensive (average of £47). 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 NIR to SOU?

Find hourly flight availability from Northern Ireland to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 December 2025.

It’s typically best to fly out from Northern Ireland to Southampton in the morning. Doing so could potentially save you 38% on the flight price compared to flying at midday, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Southampton. 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 into for flights to Southampton from Northern Ireland?

    Southampton Eastleigh (SOU), located 3.5 mi from the city center, is the airport you fly into when you book flights from Northern Ireland to Southampton.

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

    Departing from Northern Ireland to Southampton will take you 1h 40m. The distance from Northern Ireland to Southampton is about 316 mi. All flights are typically direct.

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

    The cheapest flight price from Northern Ireland to Southampton is £29. On average you can expect to pay £81. The most popular route, (Belfast Intl - Southampton Eastleigh), can usually be booked for £146.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Northern Ireland to Southampton (average of £14). Flying from Northern Ireland to Southampton in July is currently the most expensive (average of £47). 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 Northern Ireland to Southampton

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Top 2 airlines flying from Northern Ireland to Southampton

Discover the top 2 airlines that operate flights from Northern Ireland to Southampton. 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 21 December 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£40Average£112FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£72Average£130FlexibilityNo 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 Northern Ireland to Southampton?

Deals for Northern Ireland to Southampton flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to Southampton.

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

Need flexible booking options for your flight to Southampton from Northern Ireland? 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 Northern Ireland to Southampton become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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