Question 1

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

Accepted Answer

Our cheapest airline available from Southampton to Belfast is Aer Lingus. Our recent data shows that you can find tickets from as low as £88 on this airline. An additional option worth looking into is easyJet, starting at £94.

Question 2

What are the cheapest airlines to fly from Southampton to Belfast one-way?

Accepted Answer

One-way options have recently been found by users for as low as £33 on easyJet. Other airlines that offer cheap prices include Aer Lingus from £39 and British Airways from £162 one-way.

Question 3

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

Accepted Answer

Booking 83 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.

Question 4

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Southampton to Belfast (average of £67). Flying from Southampton to Belfast in July is currently the most expensive (average of £90). 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.

Question 5

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

Accepted Answer

Travellers seeking maximum savings on their Southampton to Belfast flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

E

Accepted Answer

In terms of precipitation, rainfall in Belfast ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast when rainfall is around 50.0 mm.

Question 7

E

Accepted Answer

If weather is an important factor for your trip to Belfast, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Question 8

What are the cheapest flights from Southampton to Belfast?

Accepted Answer

Looking at all options, your cheapest flight can be booked for £18. While the most popular route (Southampton Eastleigh - Belfast Intl) can be booked for £45 on average our data indicates £90 when flying from Southampton to Belfast.

Question 9

What is the cheapest day to fly round-trip from Southampton to Belfast?

Accepted Answer

Travelers have found that booking a Tuesday departure is the best way to save up to 61% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

Question 10

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

Accepted Answer

Users have found that booking a flight from Southampton to Belfast at least 44 days early can save you up to 171% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from Southampton to Belfast for as little as £63 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £108 for flights departing within the next 3 days.

Question 11

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

Accepted Answer

January is one of the best times of the year to fly to Belfast from Southampton. Prices for January average £62 per person but you can even find prices for as low as £26. The most expensive prices can be found in the month of July. Opting for a January flight can save you 45% on your journey compared to booking in July

Question 12

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

Accepted Answer

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 in the evening could potentially save you up to 24% on airfare.

Question 13

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

Accepted Answer

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.

Question 14

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

Accepted Answer

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

Question 15

How can I find direct flights from Southampton to Belfast?

Accepted Answer

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

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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.

Round-trip from	£88
One-way from	£33
Popular in	December
Cheapest in	September
Average price	£84

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£33	Average£66	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
Aer Lingus	Cheapest£53	Average£99	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Cheap flights from Southampton to Belfast from £33

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Southampton Eastleigh to Belfast are usually found in September or January, booked 83 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap flight deals from Southampton to Belfast

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Southampton to Belfast

Cheapest flights from Southampton to BelfastExplore 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 3 July 2025.

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 3 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Belfast that are best for you.

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.

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 27 June 2025.

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

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 3 July 2025.

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 3 July 2025.

Read reviews from past customers who have flown with KLM, Aer Lingus, andeasyJet 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.

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?

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

What are the cheapest airlines to fly from Southampton to Belfast one-way?

What are the cheapest flights from Southampton to Belfast?

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

How can I find direct flights from Southampton to Belfast?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Belfast

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Southampton to Belfast

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?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 3 July 2025.