SOU

Find Cheap Flights from Belfast to Southampton – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Direct flights
Every day
You can fly direct with Aer Lingus and easyJet. Average duration is 1h 38m
Direct flights
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Direct flights
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Top routes
BFS - SOU
Cheapest • 13% average savings
BHD - SOU
Most popular
Insights
Insights
When to book
9 weeks
in advance
Our data shows that travellers who book at least 9 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
When to travel
March
Cheapest • 26% price drop
July
Most popular
Good to know
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Good to know
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We hope you enjoy your trip to Southampton!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Belfast to Southampton

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Belfast to Southampton

Multiple Airlines Logo
BF1  Bere Ferrers-SOU Southampton Airport
316 mimulti-stop
Multiple Airlines Logo
SOU  Southampton Airport-BF1 Bere Ferrers
316 mimulti-stop
Multiple Airlines
Booking Insights

Price, demand, and travel trends for Belfast to Southampton flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Belfast to Southampton. It’s 17% cheaper than the average day, while Friday is the most expensive, with prices 7% higher.

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

•March is the cheapest month to fly from Belfast to Southampton at £101 return.
•July (£198) and December (£152) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 95% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Belfast to Southampton the cheapest?

Flights from Belfast to Southampton are cheapest 9 weeks before departure. Booking in this window typically costs about 37% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Belfast to Southampton

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Aer Lingus

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 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

Key details for Belfast to Southampton flights

Low season

March
Beat the crowds with an average 36% drop in traveller numbers.
The most popular month to fly with an average 57% increase in traveller numbers.

When to book flights from Belfast to Southampton

Are your dates flexible? Find out the best times to travel from Belfast to Southampton based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Belfast to Southampton flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • What are the earliest and latest flights from Belfast to Southampton?

    These are the earliest and latest flight times available from Belfast to Southampton:

    • Earliest: departs at 06:40 and lands at 08:18
    • Latest: departs at 17:35 and lands at 19:13.

    The flight takes about 1h 38m.

  • Which cabin classes can I book on flights from Belfast to Southampton?

    Only Economy class is available on flights from Belfast to Southampton.

  • How long is a flight from Belfast to Southampton?

    A direct flight from Belfast to Southampton takes 1h 38m, covering 316 miles.

  • Do I need a passport to fly from Belfast to Southampton?

    No, a passport is not required for this domestic route, but you will need another form of identification, such as a driving licence.

  • How much should I expect to pay for a Belfast to Southampton flight?

    Return flights from Belfast to Southampton range from £104 to £194, with an average of £137 over the past 12 months. Anything below £104 counts as a good deal.

  • How expensive are last-minute Belfast to Southampton flights?

    Last-minute fares on this route (booked within two weeks of departure) run 20% above the £137 route average. Book 9 weeks before departure for the lowest fares.

  • How much can I save by having a stopover when flying from Belfast to Southampton?

    On this route, direct flights are cheaper than stopover options on average. Direct fares average £138 return, compared with £189 via a stopover through Amsterdam Schiphol (AMS).

  • What is the standard checked bag allowance on flights from Belfast to Southampton?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £17–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

  • How are flight departures from Belfast to Southampton spread across the day?

    Morning is the busiest departure period on Belfast to Southampton flights, with 100% leaving in that window. Afternoon departures account for 0%, Evening flights for 0%, and Night flights for 0%.

  • Which car hire options are available at Southampton Eastleigh Airport (SOU)?

    Southampton Eastleigh Airport (SOU) hosts 5 major car hire companies, with daily rates starting from around £11 for economy cars. Top options include:

    • Alamo
    • Budget
    • Avis
    • Sixt
    • Enterprise Rent-A-Car

  • Which airports can I use when flying from Belfast to Southampton?

    Flights from Belfast to Southampton may depart from several airports in Belfast area, including Belfast Intl (BFS) and Belfast City (BHD). Flights usually arrive at Southampton Eastleigh (SOU).

  • Which airports do connecting flights from Belfast to Southampton pass through?

    Most connecting flights from Belfast to Southampton pass through Amsterdam Schiphol (AMS), which handles 100% of one-stop traffic on this route.

  • Can I save money by using flexible dates for flights from Belfast to Southampton?

    Yes. Flexible dates can save you up to 23% on flights from Belfast to Southampton. Tuesday is the cheapest departure day at £114 return on average, while Friday is the most expensive at £148, a difference of £34.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • Which airlines fly from Belfast to Southampton?

    2 airlines operate flights between Belfast and Southampton. The airlines offering direct flights on this route include:

    • Aer Lingus
    • easyJet

  • What popular places can I visit in Southampton?

    Some of the most popular sights in Southampton are Mayflower Theatre, St. Mary's Stadium, and Southampton General Hospital. These are among the most viewed places in Southampton on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Belfast to Southampton flights?

    Among airlines operating Belfast to Southampton flights:

    • Aer Lingus: offers extra legroom; offers free seat selection
    • easyJet: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Belfast to Southampton flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Aer Lingus: a cabin bag and a checked bag in Economy class
    • British Airways: a cabin bag and a checked bag in Economy class
    • easyJet: a checked bag in Economy class class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Your guide to booking Belfast to Southampton flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Friday. On this route, Tuesday flights average £114, about £34 less than Friday fares (23% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 9 weeks before you fly. On this route, that window historically saves about 37% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Belfast to Southampton trip for March. Fares historically average £101 return in that month – typically £97 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Southampton Eastleigh Airport.

    • DoubleTree by Hilton Southampton
    • Premier Inn Southampton Airport

Prefer to fly direct from Belfast to Southampton?

 
Find which airlines fly direct from Belfast to Southampton Eastleigh Airport, which days they fly and book direct flights.

Direct departures

Belfast to Southampton Eastleigh

Monday

Aer Lingus

Aer Lingus

Tuesday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Thursday

Aer Lingus

Aer Lingus

Friday

Aer Lingus

Aer Lingus

Saturday

Aer Lingus

Aer Lingus

Sunday

Aer Lingus

Aer Lingus

See more direct flights

Direct returns

Southampton Eastleigh to Belfast

Monday

Aer Lingus

Aer Lingus

Tuesday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Thursday

Aer Lingus

Aer Lingus

Friday

Aer Lingus

Aer Lingus

Saturday

Aer Lingus

Aer Lingus

Sunday

Aer Lingus

Aer Lingus

See more direct flights

More options for your flight from Belfast to Southampton

Complete your trip to Southampton with a hotel stay or car hire

Car hire in Southampton
Hotels in Southampton
Holidays in Southampton