£35 Find Cheap Flights from Southampton to Belfast

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Southampton to Belfast departing on 25/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Southampton to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Southampton to Belfast, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Southampton to Belfast (SOU-BHD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Southampton to Belfast that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Southampton to Belfast

Thu, 9 Oct - Sat, 11 Oct
easyJet Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
easyJet Logo
13:35 - 14:50BFS-SOU
1h 15mdirect
£54easyJet
Find Deal
Sun, 12 Oct - Sun, 19 Oct
easyJet Logo
12:00 - 13:20SOU-BFS
1h 20mdirect
easyJet Logo
10:10 - 11:25BFS-SOU
1h 15mdirect
£58easyJet
Find Deal
Sun, 7 Sep - Mon, 8 Sep
easyJet Logo
08:50 - 10:10SOU-BFS
1h 20mdirect
easyJet Logo
10:05 - 11:20BFS-SOU
1h 15mdirect
£62easyJet
Find Deal
Thu, 25 Sep - Thu, 2 Oct
Aer Lingus Logo
15:45 - 17:20SOU-BHD
1h 35mdirect
Aer Lingus Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
£85Aer Lingus
Find Deal
Wed, 5 Nov - Thu, 6 Nov
Aer Lingus Logo
08:55 - 10:35SOU-BHD
1h 40mdirect
Aer Lingus Logo
16:55 - 18:30BHD-SOU
1h 35mdirect
£87Aer Lingus
Find Deal
Thu, 23 Oct - Sat, 25 Oct
 Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
 Logo
10:35 - 08:40BFS-SOU
22h 05m2 stops
Thu, 9 Oct - Sat, 11 Oct
 Logo
20:00 - 16:40SOU-BFS
20h 40m2 stops
 Logo
13:35 - 14:50BFS-SOU
1h 15mdirect
Wed, 12 Nov - Sun, 16 Nov
KLM Logo
08:40 - 21:00SOU-BHD
12h 20m1 stop
KLM Logo
06:30 - 08:10BHD-SOU
25h 40m1 stop
£192KLM
Find Deal
Fri, 26 Sep - Sun, 28 Sep
British Airways Logo
12:30 - 14:05SOU-BHD
1h 35mdirect
British Airways Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
£226British Airways
Find Deal
Sat, 13 Dec - Wed, 17 Dec
KLM Logo
09:25 - 21:00SOU-BHD
11h 35m1 stop
KLM Logo
06:30 - 17:00BHD-SOU
10h 30m1 stop
£248KLM
Find Deal
Expert advice

Expert advice for your flight from Southampton to Belfast

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Aer Lingus

Book AerSpace for front-row seating and extra comfort on short-haul flights.


Enjoy friendly cabin crew service, enhancing your travel experience.

easyJet

Opt for Speedy Boarding with Standard Plus for a smoother, quicker boarding experience.


Check in online to avoid airport fees and save time with hand luggage only.

Read more about easyJetby Blane Bachelor
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Aer Lingus

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Read more
Blane Bachelor

Blane Bachelor

Expert on easyJet

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specialising in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favourite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history.

Read more
Booking Insights

KAYAK's insights & trends for Southampton to Belfast flights

Get data-powered insights and trends into flights from Southampton to Belfast to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Southampton to Belfast flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Southampton to Belfast costs £35 on the route between Southampton (SOU) and Belfast Intl Airport (BFS). Over the past month, this route was, on average, 37% cheaper than other Southampton-Belfast routes. The most popular route is between Southampton (SOU) and Belfast City Airport (BHD).

What’s the cheapest day of the week to fly from Southampton to Belfast?

The average price of all round-trip flights from Southampton to Belfast clicked on KAYAK for each day over the last 12 months.

When flying from Southampton to Belfast, you should consider leaving on a Monday and avoid Tuesdays if you are looking for the best rates. For your return to Southampton, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

What is the cheapest month to fly from Southampton to Belfast?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Southampton to Belfast, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Southampton to Belfast is January, where tickets cost £70 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £127 and £117 respectively.

How far in advance should I book a flight from Southampton to Belfast?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Southampton to Belfast, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Southampton to Belfast, you should book around 2 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know - Cheap tickets from Southampton to Belfast

Cheapest flight£35
Flight from Southampton to Belfast Intl Airport

When to book flights from Southampton to Belfast

Are your dates flexible? Find out the best times to travel from Southampton to Belfast based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Southampton to Belfast

  • What is the cheapest flight from Southampton to Belfast?

    In the last 3 days, the lowest price for a flight from Southampton to Belfast was £47 for a one-way ticket and £73 for a return.

  • Which airports will I be using when flying from Southampton to Belfast?

    Southampton is served by only 1 airport and there are 2 airports in Belfast. You will leave Southampton from Southampton Eastleigh and you will be arriving in Belfast at one of these airports: Belfast Intl or Belfast City.

  • Which aircraft models fly most regularly from Southampton to Belfast?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Southampton to Belfast?

    oneworld is the only airline alliance operating flights between Southampton and Belfast.

  • How does KAYAK find such low prices on flights from Southampton to Belfast?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Southampton to Belfast.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Southampton to Belfast?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Southampton is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Southampton to Belfast?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Belfast with an airline and back to Southampton with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Southampton to Belfast?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast from Southampton up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Southampton to Belfast?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Southampton Eastleigh to Belfast.
Find which airlines fly direct from Southampton Eastleigh Airport to Belfast, which days they fly and book direct flights.

Direct departures

Southampton Eastleigh to Belfast

Monday

Aer Lingus, easyJet

Aer Lingus, easyJet

Tuesday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Thursday

Aer Lingus, easyJet

Aer Lingus, easyJet

Friday

Aer Lingus, easyJet

Aer Lingus, easyJet

Saturday

Aer Lingus, easyJet

Aer Lingus, easyJet

Sunday

Aer Lingus, easyJet

Aer Lingus, easyJet

See more direct flights

Direct returns

Belfast to Southampton Eastleigh

Monday

Aer Lingus, easyJet

Aer Lingus, easyJet

Tuesday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Thursday

Aer Lingus, easyJet

Aer Lingus, easyJet

Friday

Aer Lingus, easyJet

Aer Lingus, easyJet

Saturday

Aer Lingus, easyJet

Aer Lingus, easyJet

Sunday

Aer Lingus, easyJet

Aer Lingus, easyJet

See more direct flights

Reviews of the top airlines flying from Southampton to Belfast

 
See real verified KAYAK customer reviews for airlines flying from Southampton to Belfast. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Southampton to Belfast? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1240 reviews
7.1Comfort
6.5Food
8.0Crew
6.9Entertainment
7.3Boarding
Airline reviews

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

10.0 ExcellentKimberly, Aug 2025EDI - DUB
Read more Aer Lingus reviews

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

A little late, but an overall pleasant flight. Staff pleasent hand helpful, a great start to our holiday.

Poor check-in experience in Manchester. Delayed boarding and check-in agent never explained how to transfer in NYC to JetBlue.

It was my first transatlantic flight with Aer Lingus. Very enjoyable. Thank you for making international travel enjoyable again.

The space between seats has reduced even further making it extremely uncomfortable. Couldn't even open the tray table properly or got compressed the moment the front guy reclined.

The seat pitch was a little tight for me, but I survived. There was a volatile, enraged passenger a couple of rows ahead of me and the cabin crew defused and resolved the situation calmly, quickly, and successfully.

We booked a flight from FCO(Rome) with a stop over at DUB(Dublin) going to JFK. Boarding from Rome was kind of chaotic since the airport I guess is very small and we needed to shuttle to the airplane. The gate agent just let everyone and anyone go without using the sections so that took a lot longer than usual boarding. From drinking to JFk boarding was good and organized. Amazingly the flights was very smooth sailing and we’ve flown American big airplane to small companies before. The aircraft’s itself is on the older side, can’t complain tho because the plane ride wa smooth. For a 3 hour plane ride, nothing was complimentary. But for the longer leg of the plane complimentary snacks, meals and drinks were provided which was great. The food wasn’t bad either. I would fly with them again, great price and good service.

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

I got caught using a stolen credit card number. Michelle Siziba is my name Nice to London Gatwick on 7/31/25.

Not happy with price of luggage or that we had no choice but to pay whether cabin or hold. I didn't book seats but this is unnecessary extra money along with suitcase

We accidentally purchased twice the bags we needed. Our fault, but the ticket was not clear to us, and it asked us to purchase bags at checkin. When we notified them to get credit back at the airport, they said to contact customer service. We flew the flight and then contracted customer service. They said no credits after the flight has flown. Not customer service oriented at all. They know we didn’t check that many bags and kept our money for a service they did not provide. Be aware and very careful of what you are purchasing from them because they will not make it right if there is an error.

sadly in Basel & Naples- no jetway we had to climb up and down stairs with our max size carry-on luggage, which was not fun!!!

This was our first time using them. I gave okay ratings for food and entertainment because it was minimal or not provided so I couldn't judge, but much better than most budget carriers we have ever used.

We were charged a ridiculous amount for a name spelling error on ticket which I would’ve corrected if I received pre-check info more than 1/2hr before flight. Then we were told at ticket counter that our bags were fine for boarding but then we’re charged another ridiculous amount to take in our luggage despite being told differently. Flight itself was great. Charges were unfair.

Apart from an email about re configuring passenger seating less than 24hrs before flying it was all good.

There were a lot (4 I think) of EasyJet flights leaving Agadir, we arrived two and a half ours before our flight. Very slow to get through the booking in, passport control and security!! We had booked in on line but had to Queue with others who had not to drop our bags off!,

We boarded and then sat on the tarmac for an hour….probably not E Jets fault. But the gentleman that checked us in and took our luggage was exceptionally friendly and calming for early morning/ confused passengers. As always, it’s the people that make or break an experience, right?

I was hesitant to book with a low cost airline due to previous experience but Easy Jet surpassed my expectations. I would definitely book a flight with them again! Seemless booking, upfront about baggage fees, professional, and helpful staff.

Everything you need to know for your flight from Southampton to Belfast

Information on your arrival and departure airports

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