Cheap flights from Belfast to London

The month of March is, on average, the cheapest month to fly to Southampton from Belfast, with most prices found around £103. If you’re not able to fly to Southampton in March, then October is your next best option. Flight prices from Belfast to Southampton during October average around £117.

Our data shows that Sunday is the least expensive day to fly to Southampton. Tickets to fly out on this day can be as low as £97. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around £130. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southampton.

According to our data, the cheapest time of day to fly to Southampton is in the morning. momondo users have found flights departing from Belfast to Southampton in the morning for as low as £129. 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 £151 on average. Flights to Southampton from Belfast at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Belfast Intl to Southampton Eastleigh for the best Belfast - Southampton Eastleigh flight prices

You are more likely to see cheaper flights to Southampton from Belfast when booking weeks ahead of your departure date. In general, you can expect to find flights to Southampton for around £133 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 Belfast for as low as £97 on momondo.

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