Cheap flights from Southampton to Dublin from £49

In general, January is the cheapest month to fly from Southampton to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £129. If you aren’t able to travel to Dublin during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of £130.

On average, the least expensive day to fly to Dublin from Southampton is on a Saturday. momondo users have found tickets for Saturday departures for as low as £105. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around £153. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

Flying to Dublin from Southampton in the evening is the least expensive time of day to depart. momondo users have found prices as low as £85 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £132 on average. Flights to Dublin from Southampton in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Dublin from Southampton when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around £152 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Southampton for as low as £122 on momondo.

There are 2 cabin classes available to choose from on Southampton to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Aer Lingus and KLM are the most popular carriers operating from Southampton Eastleigh to Dublin

Ryanair, Aer Lingus and British Airways are the top three most popular airlines that fly to Dublin from Southampton according to our data. Ryanair is the first choice among our users, with 72% of people opting to fly with this airline when travelling to Dublin. Keep in mind that there are 3 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

As of September 2026, 6 flights take off from Southampton and land in Dublin each day. The most common flight departure time for this route is 20:00, with 44% of daily flights taking off in the evening.

As of September 2026, 47 flights take off from Southampton and land in Dublin each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.