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Cheap flights from Ireland to London from €42

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to London departing on 20/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ireland to London

Recent return flight deals from Ireland to London

Enter your travel dates to find the best prices.
Aer Lingus Logo
10:10 - 11:55DUB-SOU
1h 45mdirect
Aer Lingus Logo
16:05 - 17:40SOU-DUB
1h 35mdirect
€93Aer Lingus
Find Deal
Tue, 18 Nov - Wed, 26 Nov
Aer Lingus Logo
13:55 - 15:35DUB-SOU
1h 40mdirect
Aer Lingus Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
€94Aer Lingus
Find Deal
Wed, 17 Dec - Wed, 17 Dec
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
€102Aer Lingus
Find Deal
Mon, 15 Dec - Wed, 17 Dec
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Aer Lingus Logo
09:30 - 11:10SOU-DUB
1h 40mdirect
€113Aer Lingus
Find Deal
Thu, 27 Nov - Sat, 29 Nov
Multiple Airlines Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Multiple Airlines Logo
19:55 - 07:30SOU-DUB
11h 35m1 stop
€139Multiple Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
Multiple Airlines Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Multiple Airlines Logo
09:30 - 21:50SOU-DUB
12h 20m1 stop
€154Multiple Airlines
Find Deal
Thu, 27 Nov - Sat, 29 Nov
KLM Logo
06:00 - 17:00DUB-SOU
11h 00m1 stop
KLM Logo
17:35 - 22:25SOU-DUB
4h 50m1 stop
€206KLM
Find Deal
Fri, 1 May - Mon, 4 May
KLM Logo
05:55 - 17:00DUB-SOU
11h 05m1 stop
KLM Logo
17:30 - 22:10SOU-DUB
4h 40m1 stop
€212KLM
Find Deal
Tue, 16 Dec - Tue, 23 Dec
British Airways Logo
06:30 - 14:05DUB-SOU
7h 35m1 stop
British Airways Logo
16:05 - 17:40SOU-DUB
1h 35mdirect
€345British Airways
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Thu, 11 Dec - Mon, 15 Dec
British Airways Logo
16:05 - 19:45DUB-SOU
27h 40m2 stops
British Airways Logo
06:50 - 19:35SOU-DUB
12h 45m2 stops
€380British Airways
Find Deal
Sat, 28 Mar - Tue, 31 Mar

Aer Lingus flights from Ireland to Southampton

Our best Aer Lingus deals on Ireland to Southampton flight tickets
Aer Lingus
18 Nov
DUB10:10Dublin
1h 45m
SOU11:55Southampton Eastleigh
26 Nov
SOU16:05Southampton Eastleigh
1h 35m
DUB17:40Dublin
€93
Find similar
Aer Lingus
17 Dec
DUB13:55Dublin
1h 40m
SOU15:35Southampton Eastleigh
17 Dec
SOU20:10Southampton Eastleigh
1h 40m
DUB21:50Dublin
€94
Find similar
Aer Lingus
15 Dec
DUB07:00Dublin
1h 45m
SOU08:45Southampton Eastleigh
17 Dec
SOU20:10Southampton Eastleigh
1h 40m
DUB21:50Dublin
€102
Find similar

KLM flights from Ireland to Southampton

Our best KLM deals on Ireland to Southampton flight tickets
KLM
1 May
DUB06:00Dublin
11h 00m
1 stop
SOU17:00Southampton Eastleigh
4 May
SOU17:35Southampton Eastleigh
4h 50m
1 stop
DUB22:25Dublin
€206
Find similar
KLM
16 Dec
DUB05:55Dublin
11h 05m
1 stop
SOU17:00Southampton Eastleigh
23 Dec
SOU17:30Southampton Eastleigh
4h 40m
1 stop
DUB22:10Dublin
€212
Find similar
KLM
28 Mar
DUB05:55Dublin
11h 05m
1 stop
SOU17:00Southampton Eastleigh
31 Mar
SOU17:35Southampton Eastleigh
16h 50m
1 stop
DUB10:25Dublin
€247
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from 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, momondo users made 13,528 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Ireland to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Tue 18/11

10:10-11:55

Nonstop1h 45m

Southampton Eastleigh

Wed 26/11

16:05-17:40

Nonstop1h 35m

€93

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Wed 17/12

13:55-15:35

Nonstop1h 40m

Southampton Eastleigh

Wed 17/12

20:10-21:50

Nonstop1h 40m

€94

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Mon 15/12

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Wed 17/12

20:10-21:50

Nonstop1h 40m

€102

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 27/11

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Sat 29/11

09:30-11:10

Nonstop1h 40m

€113

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 20/11

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Mon 24/11

19:55-07:30

1 stop11h 35m

€139

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 27/11

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Sat 29/11

09:30-21:50

1 stop12h 20m

€154

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Fri 1/5

06:00-17:00

1 stop11h 00m

Southampton Eastleigh

Mon 4/5

17:35-22:25

1 stop4h 50m

€206

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Tue 16/12

05:55-17:00

1 stop11h 05m

Southampton Eastleigh

Tue 23/12

17:30-22:10

1 stop4h 40m

€212

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 11/12

06:30-14:05

1 stop7h 35m

Southampton Eastleigh

Mon 15/12

16:05-17:40

Nonstop1h 35m

€345

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sat 28/3

16:05-19:45

2 stops27h 40m

Southampton Eastleigh

Tue 31/3

06:50-19:35

2 stops12h 45m

€380

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Ireland to Southampton

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Southampton?

The cheapest month to fly to Southampton from Ireland is in December. Flight prices, which tend to average around €109, are often lower during this time because this is during the off-season. If you don’t want to visit Southampton in December, then you should wait until January to fly from Ireland, when ticket prices are also cheap, with an average price of €110.

What is the cheapest day to depart on your flight to Southampton?

On average, the least expensive day to fly to Southampton from Ireland is on a Monday. momondo users have found tickets for Monday departures for as low as €126. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Southampton on Saturday is €282.

What is the cheapest time of day to depart on your flight to Southampton?

Our data shows that the cheapest Ireland to Southampton flights are usually those with departure times at midday. Our users have found flights to Southampton at midday for as low as €132. Try not to purchase tickets in the evening because they tend to be around €200. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ireland to Southampton Eastleigh flight route?

Fly from Dublin to Southampton Eastleigh for the best Ireland - Southampton Eastleigh flight prices

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

You are more likely to see cheaper flights to Southampton from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Southampton for around €153 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southampton from Ireland for as low as €111 on momondo.

What cabin class options are available on Ireland to Southampton Eastleigh flights?

There is only 1 cabin class available to choose from on Ireland to Southampton Eastleigh flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Ireland to Southampton flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Southampton

Best price found

€67

Fastest flight time

1h 40m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Southampton

1 airport
The best one-way flight to Southampton from Ireland in the past 72 hours is €67. The best return flight deal from Ireland to Southampton found on momondo in the last 72 hours is €138.
The fastest flight from Ireland to Southampton takes 1h 40m
Direct flights go from Ireland to Southampton on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. Airline offering direct flights is Aer Lingus..
There is 1 airport near Southampton: Southampton Eastleigh (SOU)
Search flight deals

  • When did momondo last update prices for flights from Ireland to Southampton Eastleigh Airport?

    Prices for flights from Ireland to Southampton Eastleigh Airport were last updated today.

  • How many operators does momondo search for flights from Ireland to Southampton Eastleigh Airport?

  • How old do you have to be to fly from Ireland to Southampton Eastleigh Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The necessary travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Ireland to Southampton?

Best airlines flying from Ireland to Southampton

Compare and see reviews for airlines that fly from Ireland to Southampton with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom €100Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Southampton?

It is quick and easy to find Ireland to Southampton flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southampton that suits you.

Can I find flights from Ireland to Southampton with flexible booking policies on momondo?

Yes. All flights to Southampton from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ireland to Southampton?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ireland to Southampton.

I’m not ready to book a flight from Ireland to Southampton right now. Can momondo alert me if prices change?

Price alerts on flights to Southampton from Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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