Cheap Flights Belfast to Southampton from £18

Flight FAQs

• Which airlines offer the cheapest flights from Belfast to Southampton?

  Based on Trip.com data, easyJet offers Cheapest nonstop one-way flights from £18 (for example, BFS–SOU on Sat, Oct 24). For a Cheapest nonstop return flight, easyJet offers fares from £67, departing on Sat, Oct 24 and returning on Wed, Oct 28.

• Which airlines offer direct flights from Belfast to Southampton?

  At the moment, you can catch a direct flight from Belfast to Southampton with the following airlines, including: Aer Lingus easyJet Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Belfast to Southampton?

  A flight from Belfast (BFS) to Southampton (SOU) takes an average of 1 hour 37 minutes.

• When is the best time to book flights from Belfast to Southampton?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Belfast to Southampton is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there from Belfast to Southampton each week?

  On average, 24 direct flights operate each week between Belfast and Southampton. See below the schedules of the main airlines serving this route:
  Aer Lingus: S/M/T/W/T/F/S – EI3604 (departure at 10:31)

• How can I find the best deals on flights from Belfast to Southampton?

  Here are some tips for finding the best flight deals from Belfast to Southampton on Trip.com:
  · Be flexible with your travel dates. The cheapest flight is currently on Sat, Oct 24, with one-way fares from just £18.
  · Compare airlines. easyJet currently offers the lowest fares on this route.
  · Set up a price alert to track fare changes without searching every day.
  · Check Trip.com regularly for flight deals and available promo codes.
  · Avoid peak season or book early. December is generally the busiest month for travel to Southampton.
  · Get exclusive promo codes on the Trip.com app.

• When is the best time to book a flight from Belfast to Southampton to get the best price?

  The cheapest month to book a flight from Belfast to Southampton is usually October, when demand is lower.

• Which upcoming date is the cheapest for flights from Belfast to Southampton?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Belfast to Southampton on October 10, 2026 with easyJet, with prices starting at £36.

• Which airports should you choose for flights from Belfast to Southampton?

  Flights to Southampton can arrive at: Southampton Airport (SOU). The most common route connects Belfast City Airport and Southampton Airport (BHD–SOU).

• What is the time difference between Belfast and Southampton?

  The time difference between Southampton and Belfast is 0m.

• How can I change or cancel my flight ticket from Belfast to Southampton?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average price of a one-way flight from Belfast to Southampton?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Belfast to Southampton is £120. Fares vary by travel date, airline and availability.

• What is the average price of a return flight from Belfast to Southampton?

  Based on Trip.com data for flights departing in the next 30 days, the average return fare from Belfast to Southampton is £144. Fares vary by travel date, airline and availability.

• How do I book flights from Belfast to Southampton on Trip.com?

  Enter Belfast and Southampton, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.

• Are there budget airlines on the Belfast to Southampton route?

  easyJetare the most popular budget airlines flying from Belfast to Southampton. Check baggage, seat and payment fees before comparing the final price.