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Cheap flights from Southampton to Belfast from £35

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/10. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BHD
14 Nov — 21 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Southampton Eastleigh to Belfast are usually found in January or February, booked 87 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

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Cheapest flights from Southampton to Belfast
Explore the most affordable flight options available from Southampton to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 October 2025.

Mon 20/1018:35SOU - BFS
Nonstop1h 20measyJet
Thu 23/1013:05BFS - SOU
Nonstop1h 15measyJet
Deal found 14/10£83
Sat 8/1108:55SOU - BHD
Nonstop1h 40mAer Lingus
Mon 10/1116:55BHD - SOU
Nonstop1h 35mAer Lingus
Deal found 13/10£92
Wed 26/1119:00SOU - BHD
Nonstop1h 35mAer Lingus
Wed 3/1206:40BHD - SOU
Nonstop1h 45mAer Lingus
Deal found 13/10£97
Fri 5/1219:00SOU - BHD
Nonstop1h 35mAer Lingus
Mon 8/1210:10BHD - SOU
Nonstop1h 40mAer Lingus
Deal found 13/10£106
Fri 21/1119:00SOU - BHD
Nonstop1h 35mAer Lingus
Mon 24/1110:10BHD - SOU
Nonstop1h 40mAer Lingus
Deal found 13/10£117
Fri 12/1219:00SOU - BHD
Nonstop1h 35mAer Lingus
Sun 14/1210:10BHD - SOU
Nonstop1h 40mAer Lingus
Deal found 14/10£129
Mon 1/1219:00SOU - BHD
Nonstop1h 35mAer Lingus
Sun 7/1210:10BHD - SOU
Nonstop1h 40mAer Lingus
Deal found 14/10£132
Fri 21/1119:00SOU - BHD
Nonstop1h 35mAer Lingus
Sun 23/1110:10BHD - SOU
Nonstop1h 40mAer Lingus
Deal found 13/10£134
Mon 3/1119:00SOU - BHD
Nonstop1h 35mAer Lingus
Fri 7/1110:10BHD - SOU
Nonstop1h 40mAer Lingus
Deal found 13/10£136
Fri 5/1208:10SOU - BFS
2 stops12h 15mMultiple Airlines
Mon 8/1220:50BFS - SOU
1 stop12h 00mMultiple Airlines
Deal found 13/10£138
Wed 15/1008:55SOU - BHD
Nonstop1h 35mAer Lingus
Thu 16/1006:40BHD - SOU
Nonstop1h 45mAer Lingus
Deal found 13/10£145
Sat 8/1115:45SOU - BHD
Nonstop1h 35mMultiple Airlines
Mon 10/1107:20BHD - SOU
2 stops12h 00mMultiple Airlines
Deal found 13/10£147

Cheap flight deals from Southampton to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 October 2025.

Round-trip from

£80

One-way from

£35

Popular in

July

Cheapest in

January

Average price

£89
easyJet
  • easyJet
  • 3/4-6/4
  • Nonstop
  • 2h 35m total
  • Southampton to Belfast
Search Deals
easyJet
  • easyJet
  • 23/10
  • Nonstop
  • 1h 20m total
  • Southampton to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 October 2025.
Use the filters below to find and compare flights from Southampton to Belfast that are best for you.

Fly from

Southampton

Fly to

Belfast

Route

Depart

Return

Price

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 3/4

12:15-13:35

Nonstop1h 20m

Belfast Intl

Mon 6/4

10:05-11:20

Nonstop1h 15m

£80

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sun 22/3

19:00-20:35

Nonstop1h 35m

Belfast City

Fri 27/3

10:10-11:50

Nonstop1h 40m

£127

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Fri 21/11

19:00-20:35

Nonstop1h 35m

Belfast City

Sun 23/11

10:10-11:50

Nonstop1h 40m

£134

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Mon 3/11

19:00-20:35

Nonstop1h 35m

Belfast City

Fri 7/11

10:10-11:50

Nonstop1h 40m

£136

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 5/12

08:10-20:25

2 stops12h 15m

Belfast Intl

Mon 8/12

20:50-08:50

1 stop12h 00m

£138

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Fri 3/4

08:55-10:35

Nonstop1h 40m

Belfast City

Mon 6/4

06:40-08:25

Nonstop1h 45m

£147

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 21/11

19:50-15:10

2 stops19h 20m

Belfast Intl

Mon 24/11

20:50-08:50

1 stop12h 00m

£157

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 5/12

17:45-07:25

1 stop13h 40m

Belfast Intl

Mon 8/12

08:15-11:25

1 stop3h 10m

£158

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sun 28/12

18:20-07:45

1 stop13h 25m

Belfast Intl

Wed 31/12

20:40-17:20

1 stop20h 40m

£165

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sat 21/3

17:15-20:50

1 stop3h 35m

Belfast City

Mon 23/3

16:55-18:30

Nonstop1h 35m

£182

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 20 results
1
2

Best time to book a flight from Southampton to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Southampton with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a return flight from Southampton to Belfast. Price data was last updated on 10 October 2025.

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Southampton to Belfast. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Southampton to Belfast?

Currently, January is the cheapest month in which you can book a flight from Southampton to Belfast (average of £14). Flying from Southampton to Belfast in August is currently the most expensive (average of £40). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SOU to BFS?

Find hourly flight availability from Southampton to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 October 2025.

One of the essential ways to save on airfare from Southampton to Belfast is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 54% on airfare.

How much does it cost for a return flight from Southampton to Belfast?

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated 15 October 2025.
Read reviews from past customers who have flown with Aer Lingus and easyJet from Southampton to Belfast. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,337 reviews
Check prices

Food

6.5

Overall

7.2

Boarding

7.4

Comfort

7.1

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,337 reviews
Aer Lingus
7.2
Good
1,337 reviews
Check prices

Food

6.5

Overall

7.2

Boarding

7.4

Comfort

7.1

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
easyJet
6.9
Okay
1,835 reviews
Aer Lingus
7.2
Good
1,337 reviews
Check prices

Food

6.5

Overall

7.2

Boarding

7.4

Comfort

7.1

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

Related info for your journey

Find useful and relevant information for your journey from Southampton to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Southampton to Belfast?

    For a flight from Southampton to Belfast, you will be flying from Eastleigh. Southampton Eastleigh (SOU) is just 3.5 mi from the center of the city. Eastleigh is the only Southampton airport and it handles 0 outbound flights to Belfast per day. 2 airlines have flights to Belfast from Southampton Eastleigh on a regular basis.

  • How long is the flight from Southampton to Belfast?

    There are many flights that can get you from Southampton to Belfast in 1h 20m. Fly via easyJet or Aer Lingus to get the fastest option. Airlines will cover a distance of 326 mi. All flights are typically direct.

  • What are the cheapest airlines flying from Southampton to Belfast round-trip?

    Our cheapest airline available from Southampton to Belfast is easyJet. Our recent data shows that you can find tickets from as low as £36 on this airline. An additional option worth looking into is Aer Lingus, starting at £64. You may be able to fly from Southampton to Belfast for 63% less than the average price by searching for these airlines.

  • What are the cheapest flights from Southampton to Belfast?

    Looking at all options, your cheapest flight can be booked for £26. While the most popular route (Southampton Eastleigh - Belfast Intl) can be booked for £67 on average, our data indicates £76 when flying from Southampton to Belfast.

  • Can I find deals for flights from Southampton to Belfast that include hotel bookings?

    Yes. In addition to deals on Southampton to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Southampton to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Belfast.

  • Can I find deals for business class flights from Southampton to Belfast?

    Yes. Cheapflights offers flight deals from Southampton to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Southampton to Belfast?

    Currently, January is the cheapest month in which you can book a flight from Southampton to Belfast (average of £14). Flying from Southampton to Belfast in August is currently the most expensive (average of £40). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Southampton to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Southampton to Belfast

Discover the top 2 airlines that operate flights from Southampton to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 October 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£36Average£76FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£64Average£109FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Southampton to Belfast?

Cheapflights makes it easy to find Southampton to Belfast flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Belfast?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast from Southampton.

Can Cheapflights find flights from Southampton to Belfast with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Southampton to Belfast, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Southampton to Belfast become cheaper?

Yes, Cheapflights offers price alerts on Southampton to Belfast flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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