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Cheap flights from Southampton (SOU) to Dublin (DUB)

SOU — DUB
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheapflights Tip: The best prices from Southampton Eastleigh to Dublin are usually found in February or January, booked 67 days in advance, depart on a Tuesday or Monday and return on a Thursday

Find flight deals from Southampton to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

February

Average price

$234

Good round-trip deal

$4,785 or less

Good one-way deal

$239 or less
Provider with most accurate pricing for Southampton Eastleigh-Dublin flight deals.
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Provider most trusted by Cheapflights users for Southampton Eastleigh-Dublin flights.
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Highest demand for flights based on searches. 15% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 2026
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Price to beat on a round-trip flight from Southampton Eastleigh to Dublin.
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Price to beat on a one-way flight from Southampton Eastleigh to Dublin.
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  • Most accurate provider: When it comes to deals on Southampton-Dublin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Southampton-Dublin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Southampton-Dublin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Southampton-Dublin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Southampton-Dublin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Southampton to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin from Southampton with our price prediction graph.
Estimated round-trip 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 Dublin

How far ahead should I book a flight from Southampton to Dublin?

The price you pay for your flight from Southampton to Dublin may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Southampton to Dublin (average of $171). Flying from Southampton to Dublin in June is currently the most expensive (average of $258). 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 DUB?

Find hourly flight availability from Southampton to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2026.

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

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated July 28, 2026.
Read reviews from past customers who have flown Aer Lingus from Southampton to Dublin. 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
7.3
Good
1,682 reviews

Entertainment

7.0

Overall

7.3

Crew

8.1

Boarding

7.4

Food

6.7

Comfort

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Jun 2026

FCO - DUB

Very disappointed that there was no WiFi or entertainment on the plane. For a 9+ hour flight that was awful! Staff were very nice and friendly.
Aer Lingus
7.3
Good
1,682 reviews
Aer Lingus
7.3
Good
1,682 reviews

Entertainment

7.0

Overall

7.3

Crew

8.1

Boarding

7.4

Food

6.7

Comfort

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Jun 2026

FCO - DUB

Very disappointed that there was no WiFi or entertainment on the plane. For a 9+ hour flight that was awful! Staff were very nice and friendly.

Related info for your journey

Find useful and relevant information for your journey from Southampton to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Southampton to Dublin flight route?

    Flights from Southampton Eastleigh to Dublin have been viewed 1 times in the past calendar month.

  • What is the cheapest airline to fly from Southampton to Dublin round-trip?

    Flying on Aer Lingus is currently your cheapest option to Dublin, with prices starting at $134. This flight start at 34% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Southampton to Dublin?

    Before booking your flight to Dublin from Southampton, check out the most reliable airlines to get you to your destination on time: Qatar Airways (86%), Aer Lingus (77%), Emerald Airlines( 77%).

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

    Yes. In addition to deals on Southampton to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Southampton to Dublin?

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

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

    Yes. Cheapflights offers flight deals from Southampton to Dublin 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 Dublin?

    Currently, February is the cheapest month in which you can book a flight from Southampton to Dublin (average of $171). Flying from Southampton to Dublin in June is currently the most expensive (average of $258). 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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Castleknock

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Top airline flying from Southampton to Dublin

Discover the top airline that operate flights from Southampton to Dublin. 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 2,558,603 searches. Data last updated July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$134Average$179FlexibilityNo cancel feeOn-timeN/A

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