Cheap flights from Northern Ireland to London from £63
This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to London departing on 23/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Northern Ireland to London
Cheap return flights
Cheap one-way flights
Cheap direct flights
easyJet flights from Northern Ireland to Southampton
Our best easyJet deals on Northern Ireland to Southampton flight tickets
Aer Lingus flights from Northern Ireland to Southampton
Our best Aer Lingus deals on Northern Ireland to Southampton flight tickets
See travel insights to London from
How to get the cheapest flight ticket from Northern 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 March is, on average, the cheapest month to fly to Southampton from Northern Ireland, with most prices found around £68. If you’re not able to fly to Southampton in March, then January is your next best option. Flight prices from Northern Ireland to Southampton during January average around £75.
What is the cheapest day to depart on your flight to Southampton?
Our data shows that Monday is the least expensive day to fly to Southampton. Tickets to fly out on this day can be as low as £59. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around £145. 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 evening. momondo users have found flights departing from Northern Ireland to Southampton in the evening for as low as £101. 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 £112 on average. Flights to Southampton from Northern Ireland at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest Northern Ireland to Southampton Eastleigh flight route?
Fly from Belfast Intl to Southampton Eastleigh for the best Northern 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 Northern Ireland when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Southampton for around £96 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southampton from Northern Ireland for as low as £60 on momondo.
What cabin class options are available on Northern Ireland to Southampton Eastleigh flights?
There are 1 cabin classes available to choose from on Northern 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.
How many flights depart from Northern Ireland to Southampton on average per day?
5 flights are operational daily from Northern Ireland to Southampton as of May 2025. The most popular departure time for this route is 06:00, with 64% of flights per day taking off at midday.
How many flights depart from Northern Ireland to Southampton on average per week?
The number of flights available between Northern Ireland and Southampton is 38 per week as of May 2025. The most frequent departure day is Fri, with 18% of weekly flights leaving on this day.
Cheap Northern Ireland to Southampton flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to Southampton
Best price found | £105 |
|---|---|
Fastest flight time | 1h 15m |
Direct flights | Tue, Fri and Sat |
Airports in Southampton | 1 airport |
When did momondo last update prices for flights from Northern Ireland to Southampton Eastleigh Airport?
Prices for flights from Northern Ireland to Southampton Eastleigh Airport are updated daily.
How many operators does momondo search for flights from Northern Ireland to Southampton Eastleigh Airport?
As of May 2025, there are 2 operators available to choose from for flights from Northern Ireland to Southampton Eastleigh Airport.
How old do you have to be to fly from Northern Ireland to Southampton Eastleigh Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Southampton Eastleigh Airport.
What documentation or ID do you need to fly to Southampton Eastleigh Airport?
The travel and health documents required for your trip to Southampton Eastleigh Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Southampton Eastleigh Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Northern Ireland to Southampton?
Based on momondo bookings for flights between Northern Ireland and Southampton, the leading plane model is ATR 72-201 / 202, making up 69.17% of the total bookings. Other popular models include Airbus A319 with 22.50%, Airbus A320-100/200 with 6.17%, and Airbus A320neo with 0.67%.
Best airlines flying from Northern Ireland to Southampton
Compare and see reviews for airlines that fly from Northern Ireland to Southampton with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £43 | Free Cancellation | Rating 6.9 1,800 reviews | |||
| PriceFrom £59 | Free Cancellation | Rating 7.0 1,077 reviews |
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Northern Ireland to Southampton?
It is quick and easy to find Northern Ireland to Southampton flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southampton that suits you.
Can I find flights from Northern Ireland to Southampton with flexible booking policies on momondo?
Flights from Northern Ireland to Southampton with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Northern Ireland to Southampton?
momondo provides multiple filters to help you find the best flight to Southampton from Northern Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Northern Ireland to Southampton right now. Can momondo alert me if prices change?
Price alerts on flights to Southampton from Northern Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.