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Cheap flights from Ireland to London from £40

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 7/12. 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
07:00 - 08:45DUB-SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
£81Aer Lingus
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
£82Aer Lingus
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Aer Lingus Logo
13:55 - 15:35DUB-SOU
1h 40mdirect
Aer Lingus Logo
16:05 - 17:40SOU-DUB
1h 35mdirect
£85Aer Lingus
Find Deal
Fri, 13 Feb - Sun, 15 Feb
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
£99Aer Lingus
Find Deal
Sat, 10 Jan - Sun, 11 Jan
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Aer Lingus Logo
09:30 - 11:10SOU-DUB
1h 40mdirect
£101Aer Lingus
Find Deal
Sun, 23 Nov - Sun, 30 Nov
Aer Lingus Logo
10:10 - 11:55DUB-SOU
1h 45mdirect
Aer Lingus Logo
09:30 - 11:10SOU-DUB
1h 40mdirect
£104Aer Lingus
Find Deal
Wed, 26 Nov - Sun, 30 Nov
Multiple Airlines Logo
10:10 - 11:55DUB-SOU
1h 45mdirect
Multiple Airlines Logo
17:55 - 22:25SOU-DUB
4h 30m1 stop
£113Multiple Airlines
Find Deal
Wed, 7 Jan - Thu, 8 Jan
KLM Logo
06:00 - 17:00ORK-SOU
11h 00m1 stop
KLM Logo
17:35 - 16:40SOU-ORK
23h 05m1 stop
£292KLM
Find Deal
Tue, 28 Apr - Fri, 1 May
KLM Logo
06:00 - 17:00ORK-SOU
11h 00m1 stop
KLM Logo
17:35 - 16:40SOU-ORK
23h 05m1 stop
£292KLM
Find Deal
Tue, 28 Apr - Fri, 1 May
KLM Logo
06:00 - 17:00ORK-SOU
11h 00m1 stop
KLM Logo
17:35 - 14:25SOU-ORK
20h 50m2 stops
£351KLM
Find Deal
Tue, 28 Apr - Fri, 1 May

Aer Lingus flights from Ireland to Southampton

Our best Aer Lingus deals on Ireland to Southampton flight tickets
Aer Lingus
4 Dec
DUB07:00Dublin
1h 45m
SOU08:45Southampton Eastleigh
8 Dec
SOU20:10Southampton Eastleigh
1h 40m
DUB21:50Dublin
£81
Find similar
Aer Lingus
4 Dec
DUB07:00Dublin
1h 45m
SOU08:45Southampton Eastleigh
8 Dec
SOU20:10Southampton Eastleigh
1h 40m
DUB21:50Dublin
£82
Find similar
Aer Lingus
13 Feb
DUB13:55Dublin
1h 40m
SOU15:35Southampton Eastleigh
15 Feb
SOU16:05Southampton Eastleigh
1h 35m
DUB17:40Dublin
£85
Find similar

KLM flights from Ireland to Southampton

Our best KLM deals on Ireland to Southampton flight tickets
KLM
28 Nov
DUB17:15Dublin
15h 35m
1 stop
SOU08:50Southampton Eastleigh
30 Nov
SOU18:05Southampton Eastleigh
14h 00m
1 stop
DUB08:05Dublin
£196
Find similar
KLM
4 Dec
DUB17:15Dublin
14h 50m
1 stop
SOU08:05Southampton Eastleigh
8 Dec
SOU08:40Southampton Eastleigh
7h 40m
1 stop
DUB16:20Dublin
£196
Find similar
KLM
28 Mar
DUB05:55Dublin
11h 05m
1 stop
SOU17:00Southampton Eastleigh
31 Mar
SOU17:35Southampton Eastleigh
26h 40m
1 stop
DUB20:15Dublin
£217
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 279,928 searches. Data last updated 13 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

Thu 4/12

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Mon 8/12

20:10-21:50

Nonstop1h 40m

£81

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 4/12

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Mon 8/12

20:10-21:50

Nonstop1h 40m

£82

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Fri 13/2

13:55-15:35

Nonstop1h 40m

Southampton Eastleigh

Sun 15/2

16:05-17:40

Nonstop1h 35m

£85

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sat 10/1

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Sun 11/1

20:10-21:50

Nonstop1h 40m

£99

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sun 23/11

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Sun 30/11

09:30-11:10

Nonstop1h 40m

£101

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Wed 26/11

10:10-11:55

Nonstop1h 45m

Southampton Eastleigh

Sun 30/11

09:30-11:10

Nonstop1h 40m

£104

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Wed 7/1

10:10-11:55

Nonstop1h 45m

Southampton Eastleigh

Thu 8/1

17:55-22:25

1 stop4h 30m

£113

CorkSouthampton

ORK - SOU

ORKSOU

Cork

Tue 28/4

06:00-17:00

1 stop11h 00m

Southampton Eastleigh

Fri 1/5

17:35-16:40

1 stop23h 05m

£292

CorkSouthampton

ORK - SOU

ORKSOU

Cork

Tue 28/4

06:00-17:00

1 stop11h 00m

Southampton Eastleigh

Fri 1/5

17:35-16:40

1 stop23h 05m

£292

CorkSouthampton

ORK - SOU

ORKSOU

Cork

Tue 28/4

06:00-17:00

1 stop11h 00m

Southampton Eastleigh

Fri 1/5

17:35-14:25

2 stops20h 50m

£351

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

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 month of December is, on average, the cheapest month to fly to Southampton from Ireland, with most prices found around £96. If you’re not able to fly to Southampton in December, then January is your next best option. Flight prices from Ireland to Southampton during January average around £97.

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

Our data shows that Tuesday is the least expensive day to fly to Southampton. Tickets to fly out on this day can be as low as £98. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £157. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southampton.

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

According to our data, the cheapest time of day to fly to Southampton is in the afternoon. momondo users have found flights departing from Ireland to Southampton in the afternoon for as low as £137. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £155 on average. Flights to Southampton from Ireland at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 £134 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 £107 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

£53

Fastest flight time

1h 40m

Direct flights

Mon, 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 £53. The best return flight deal from Ireland to Southampton found on momondo in the last 72 hours is £100.
The fastest flight from Ireland to Southampton takes 1h 40m
Direct flights go from Ireland to Southampton on Monday, 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 are updated daily.

  • 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?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable 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 £82Free CancellationRating
7.2
1,370 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?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to Southampton . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Southampton from Ireland with this policy.

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

momondo provides multiple filters to help you find the best flight to Southampton from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Southampton from Ireland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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