Cheap flights from Southampton to Ireland from £53

The month of February is, on average, the cheapest month to fly to Ireland from Southampton, with most prices found around £127. If you’re not able to fly to Ireland in February, then January is your next best option. Flight prices from Southampton to Ireland during January average around £127.

The cheapest day to depart on your flight to Ireland is on a Tuesday when prices can be found for as low as £128. This is often the case because there is less demand to fly during this day of the week. Flights from Southampton to Ireland on a Saturday will generally be more expensive and average around £163. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the evening is the cheapest time of day to fly from Southampton to Ireland when you can find flight prices for as low as £127. Flying to Ireland in the evening is an ideal time because this is during off-peak travel hours. Flights to Ireland are more costly in the morning, with an average ticket price of £155. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Ireland from Southampton when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around £144 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Southampton for as low as £122 on momondo.

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

Aer Lingus, KLM, and British Airways are the most popular carriers operating from Southampton Eastleigh to Ireland

Ryanair, Aer Lingus and British Airways are the top three most popular airlines that fly to Ireland from Southampton according to our data. Ryanair is the first choice among our users, with 71% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 4 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

5 flights are operational daily from Southampton to Ireland as of February 2026. The most popular departure time for this route is 09:00, with 41% of flights per day taking off at midday.

40 flights are operational weekly from Southampton to Ireland as of February 2026. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.