What are the cheapest airlines to fly from Southampton to Northern Ireland one-way?

The cheapest airline one-way is easyJet, with whom users have recently found tickets for as low as £25. However, be on the lookout for offers from Aer Lingus and British Airways, as they are both options that can get you from Southampton to Northern Ireland for a low price.

What are the cheapest flights from Southampton to Northern Ireland?

On average you can expect to pay £64 for a flight from Southampton to Northern Ireland. The cheapest flight overall is £18 while the most popular route, (Southampton Eastleigh - Belfast Intl) is currently priced at £59.

How far in advance should I book a flight from Southampton to Northern Ireland?

Travelers have found it’s best to book a flight 44 days in advance to save up to 154% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Southampton to Northern Ireland 1-2 weeks in advance for as low as £65, or £115 for flights within the next 24 hours.

What is the cheapest month to fly from Southampton to Northern Ireland?

The best pricing can be found in the month of January. Prices to Northern Ireland from Southampton average £62. You can even find prices in January for less than £62, as users have found deals to Northern Ireland from as low as £28. The month of July appears to be one of the more expensive times to travel to Northern Ireland from Southampton. Flying in the targeted month can save you up to 39%.

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 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.

£25+ Flights from Southampton to Northern Ireland

Cheap flight deals from Southampton to Northern Ireland

Round-trip from	£59
One-way from	£25
Popular in	July
Cheapest in	January
Average price	£52
Good round-trip deal	£45 or less
Good one-way deal	£21 or less

easyJet
15/5-18/5
Nonstop
2h 35m total
Southampton to Northern Ireland

Search Deals

easyJet
13/6
Nonstop
1h 20m total
Southampton to Northern Ireland

Search Deals

Highest demand for flights based on searches. 20% potential increase in price (£12 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£3 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Price to beat on a round-trip flight from Southampton Eastleigh to Northern Ireland.

Search Deals

Price to beat on a one-way flight from Southampton Eastleigh to Northern Ireland.

Search Deals

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 21 March 2025.

Thu 15/515:05SOU - BFS

Nonstop1h 20measyJet

Sun 18/510:10BFS - SOU

Nonstop1h 15measyJet

Deal found 21/3£59

Thu 3/416:45SOU - BHD

Nonstop1h 35mAer Lingus

Mon 28/411:00BHD - SOU

Nonstop1h 40mAer Lingus

Deal found 19/3£66

Thu 3/416:45SOU - BHD

Nonstop1h 35mMultiple Airlines

Mon 28/407:55BHD - SOU

1 stop7h 00mMultiple Airlines

Deal found 19/3£115

Thu 15/520:00SOU - BFS

2 stops20h 40mMultiple Airlines

Sun 18/510:10BFS - SOU

Nonstop1h 15mMultiple Airlines

Deal found 20/3£123

Fri 28/1117:20SOU - BHD

1 stop3h 40mKLM

Sun 30/1117:20BHD - SOU

1 stop15h 05mKLM

Deal found 21/3£217

Fri 23/512:30SOU - BHD

Nonstop1h 35mBritish Airways

Mon 26/511:00BHD - SOU

Nonstop1h 40mBritish Airways

Deal found 20/3£225

Sat 3/518:55SOU - BHD

2 stops22h 45measyJet

Mon 5/507:55BHD - SOU

1 stop7h 00measyJet

Deal found 21/3£311

Sun 2/1114:45SOU - BHD

2 stops22h 10mLoganair

Wed 5/1113:25BHD - SOU

2 stops7h 30mLoganair

Deal found 21/3£576

Best flights from Southampton to Northern Ireland
Discover carefully curated flight deals from Southampton to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 March 2025.

Thu 15/515:05SOU - BFS

Nonstop1h 20measyJet

Sun 18/510:10BFS - SOU

Nonstop1h 15measyJet

Deal found 21/3£59

Thu 3/416:45SOU - BHD

Nonstop1h 35mAer Lingus

Mon 28/411:00BHD - SOU

Nonstop1h 40mAer Lingus

Deal found 19/3£66

Thu 3/416:45SOU - BHD

Nonstop1h 35mMultiple Airlines

Mon 28/407:55BHD - SOU

1 stop7h 00mMultiple Airlines

Deal found 19/3£115

Fri 23/512:30SOU - BHD

Nonstop1h 35mBritish Airways

Mon 26/511:00BHD - SOU

Nonstop1h 40mBritish Airways

Deal found 20/3£225

Thu 15/520:00SOU - BFS

2 stops20h 40mMultiple Airlines

Sun 18/510:10BFS - SOU

Nonstop1h 15mMultiple Airlines

Deal found 20/3£123

Sat 3/518:55SOU - BHD

2 stops22h 45measyJet

Mon 5/507:55BHD - SOU

1 stop7h 00measyJet

Deal found 21/3£311

Direct flights from Southampton to Northern Ireland
Explore direct flight options from Southampton to Northern Ireland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 March 2025.

Thu 15/515:05SOU - BFS

Nonstop1h 20measyJet

Sun 18/510:10BFS - SOU

Nonstop1h 15measyJet

Deal found 21/3£59

Thu 3/416:45SOU - BHD

Nonstop1h 35mAer Lingus

Mon 28/411:00BHD - SOU

Nonstop1h 40mAer Lingus

Deal found 19/3£66

Fri 23/512:30SOU - BHD

Nonstop1h 35mBritish Airways

Mon 26/511:00BHD - SOU

Nonstop1h 40mBritish Airways

Deal found 20/3£225

Thu 17/408:55SOU - BHD

Nonstop1h 35mMultiple Airlines

Tue 22/406:40BHD - SOU

Nonstop1h 45mMultiple Airlines

Deal found 20/3£236

Last-minute flights from Southampton to Northern Ireland
Discover last-minute flight deals from Southampton to Northern Ireland. Data last updated 21 March 2025 and is based on user searches.

Fri 28/313:30SOU - BFS

Nonstop1h 20measyJet

Mon 31/310:05BFS - SOU

Nonstop1h 15measyJet

Deal found 20/3£163

Fri 28/308:10SOU - BFS

1 stop7h 30mMultiple Airlines

Mon 31/310:05BFS - SOU

Nonstop1h 15mMultiple Airlines

Deal found 20/3£169

Fri 28/319:25SOU - BHD

Nonstop1h 35mAer Lingus

Mon 31/306:40BHD - SOU

Nonstop1h 45mAer Lingus

Deal found 20/3£201

Fri 28/320:10SOU - BHD

2 stops16h 00mMultiple Airlines

Mon 31/311:00BHD - SOU

Nonstop1h 40mMultiple Airlines

Deal found 20/3£274

Fri 28/309:30SOU - BHD

2 stops9h 20mBritish Airways

Mon 31/309:50BHD - SOU

2 stops9h 40mBritish Airways

Deal found 20/3£863

Thu 3/416:45SOU - BHD

Nonstop1h 35mAer Lingus

Mon 28/411:00BHD - SOU

Nonstop1h 40mAer Lingus

Deal found 19/3£66

Thu 3/416:45SOU - BHD

Nonstop1h 35mMultiple Airlines

Mon 28/407:55BHD - SOU

1 stop7h 00mMultiple Airlines

Deal found 19/3£115

Tue 8/420:00SOU - BFS

2 stops25h 30mMultiple Airlines

Fri 11/410:30BFS - SOU

Nonstop1h 15mMultiple Airlines

Deal found 21/3£159

Sun 20/412:00SOU - BFS

Nonstop1h 20measyJet

Sun 27/410:10BFS - SOU

Nonstop1h 15measyJet

Deal found 21/3£76

Thu 24/408:55SOU - BHD

Nonstop1h 35mBritish Airways

Sun 27/411:00BHD - SOU

Nonstop1h 40mBritish Airways

Deal found 20/3£251

One-way flights from Southampton to Northern Ireland
Search for one-way flight options from Southampton to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 21 March 2025.

Fri 13/612:15SOU - BFS

Nonstop1h 20measyJet

Deal found 20/3£25

Mon 31/313:10SOU - BHD

Nonstop1h 35mAer Lingus

Deal found 21/3£42

Mon 5/520:00SOU - BFS

2 stops19h 20mMultiple Airlines

Deal found 21/3£99

Mon 14/416:45SOU - BHD

Nonstop1h 35mBritish Airways

Deal found 20/3£106

Sat 24/518:00SOU - BHD

1 stop23h 35measyJet

Deal found 21/3£140

Sat 24/518:05SOU - BHD

3 stops20h 30mMultiple Airlines

Deal found 21/3£230

Tue 9/912:30SOU - BHD

3 stops24h 25mLoganair

Deal found 20/3£429

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 15/5

15:05-16:25

Nonstop1h 20m

Belfast Intl

Sun 18/5

10:10-11:25

Nonstop1h 15m

£59

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Thu 3/4

16:45-18:20

Nonstop1h 35m

Belfast City

Mon 28/4

11:00-12:40

Nonstop1h 40m

£66

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Thu 3/4

16:45-18:20

Nonstop1h 35m

Belfast City

Mon 28/4

07:55-14:55

1 stop7h 00m

£115

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 15/5

20:00-16:40

2 stops20h 40m

Belfast Intl

Sun 18/5

10:10-11:25

Nonstop1h 15m

£123

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Fri 23/5

12:30-14:05

Nonstop1h 35m

Belfast City

Mon 26/5

11:00-12:40

Nonstop1h 40m

£225

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sat 3/5

18:55-17:40

2 stops22h 45m

Belfast City

Mon 5/5

07:55-14:55

1 stop7h 00m

£311

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 13/6

12:15-13:35

Nonstop1h 20m

£25

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Mon 31/3

13:10-14:45

Nonstop1h 35m

£42

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 5/5

20:00-15:20

2 stops19h 20m

£99

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Mon 14/4

16:45-18:20

Nonstop1h 35m

£106

Flights are sorted by cheapest return flights first.

Deals found on 20/3

Showing 1-10 of 13 results

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?

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.

Rainfall in Northern Ireland by month

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Northern Ireland

To help decide which airline to fly from Southampton to Northern Ireland, see what other customers have to say about Aer Lingus, easyJet and British Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.0

Good

1,063 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Aer Lingus

7.0

Good

1,063 reviews

Aer Lingus

7.0

Good

1,063 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

easyJet

6.9

Okay

1,793 reviews

Aer Lingus

7.0

Good

1,063 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

British Airways

6.6

Okay

6,714 reviews

Aer Lingus

7.0

Good

1,063 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Related info for your journey

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.
What are the cheapest airlines to fly from Southampton to Northern Ireland one-way?
The cheapest airline one-way is easyJet, with whom users have recently found tickets for as low as £25. However, be on the lookout for offers from Aer Lingus and British Airways, as they are both options that can get you from Southampton to Northern Ireland for a low price.
What are the cheapest flights from Southampton to Northern Ireland?
On average you can expect to pay £64 for a flight from Southampton to Northern Ireland. The cheapest flight overall is £18 while the most popular route, (Southampton Eastleigh - Belfast Intl) is currently priced at £59.
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

Browse thousands of different options on Cheapflights for your next trip

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Direct flights to United Kingdom

Top 2 airlines flying from Southampton to Northern Ireland

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£37	Average£74	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
Aer Lingus	Cheapest£56	Average£98	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

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 13/6. Fares are subject to change and may not be available on all flights or dates of travel.

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 21 March 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Southampton to Northern Ireland

Cheapest flights from Southampton to Northern IrelandExplore 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 21 March 2025.

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 21 March 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Northern Ireland that are best for you.

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.

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?

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 21 March 2025.

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

Reviews of airlines servicing Northern Ireland

To help decide which airline to fly from Southampton to Northern Ireland, see what other customers have to say about Aer Lingus, easyJet and British Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the cheapest airlines to fly from Southampton to Northern Ireland one-way?

What are the cheapest flights from Southampton to Northern Ireland?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Southampton to Northern Ireland

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?

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

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

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

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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 21 March 2025.