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Cheap Flights from Southampton to Belfast

Popular airlines from Southampton to Belfast

Choose from 1 airlines flying from Southampton to Belfast, including Aer Lingus, and . Aer Lingus currently offers the cheapest ticket on this route.
Airlines are determined based on actual purchased flight tickets from Southampton to Belfast according to previous 12 months data from Trip.com.

Explore the cheapest flights from Southampton to Belfast in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at S$ 67, and round-trip direct tickets start at S$ 151.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flying from Southampton to Belfast

The distance between Southampton and Belfast is approximately 507.04km. It takes around 1 hour 36 minutes on average to fly from Southampton to Belfast. Based on Trip.com's data, travel demand peaks in July. The off-season for travel is September.

Cheapest one-way flight priceS$ 59
Cheapest return ticket priceS$ 151
Off-season for travelSeptember
Peak season for travelJuly
Flight distance507.04km
Average flight time1 hour 36 minutes
Popular airlineAer Lingus
Flight statistics for the Southampton–Belfast route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Southampton to Belfast.

What is the cheapest month for one-way flights from Southampton to Belfast?

Average price of one-way flights from Southampton to Belfast purchased by Trip.com users by month over the past 12 months

According to Trip.com's data, the cheapest month for flights from Southampton to Belfast is Jan, with an average price of S$ 84. Conversely, the most expensive month is typically Dec, with an average price of up to S$ 172.

S$ 172
S$ 128
S$ 84
S$ 40
  • S$ 84
    Jan
  • S$ 88
    Feb
  • S$ 97
    Mar
  • S$ 97
    Apr
  • S$ 137
    May
  • S$ 93
    Jun
  • S$ 170
    Jul
  • S$ 99
    Aug
  • S$ 110
    Sep
  • S$ 119
    Oct
  • S$ 141
    Nov
  • S$ 172
    Dec

What is the cheapest month for return flights from Southampton to Belfast?

Average price of return flights from Southampton to Belfast purchased by Trip.com users by month over the past 12 months

According to Trip.com's data, the cheapest month for flights from Southampton to Belfast is Jan, with an average price of S$ 133. Conversely, the most expensive month is typically Sep, with an average price of up to S$ 462.

S$ 462
S$ 298
S$ 133
0
  • S$ 133
    Jan
  • S$ 139
    Feb
  • S$ 291
    Mar
  • S$ 296
    Apr
  • S$ 341
    May
  • S$ 265
    Jun
  • S$ 299
    Jul
  • S$ 286
    Aug
  • S$ 462
    Sep
  • S$ 314
    Oct
  • S$ 256
    Nov
  • S$ 420
    Dec

Which day of the week has the lowest fares for flights from Southampton to Belfast?

The average weekly fares for flights from Southampton to Belfast on different dates. (Based on Trip.com’s data from the past 12 months)

Based on Trip.com’s data from the past 12 months, Thu offers the lowest fares for flights from Southampton to Belfast, while Fri typically has the highest fares.

S$ 193
S$ 161
S$ 129
S$ 97
    Cheapest
  • S$ 172
    Mon
  • S$ 165
    Tue
  • S$ 163
    Wed
  • S$ 128
    Thu
  • S$ 192
    Fri
  • S$ 161
    Sat
  • S$ 185
    Sun

Frequently Asked Questions

  • Which airlines offer the cheapest flights from Southampton (SOU) to Belfast (BFS)?

    Based on Trip.com data, easyJet offers one-way fares as low as S$ 59 on Cheapest nonstop routes (e.g. SOU to BFS on Wed, Mar 4), while Aer Lingus offers Cheapest nonstop round-trips from S$ 151 departing on Wed, Jan 21 and returning on Sat, Jan 24.
  • At the moment, you can catch a direct flight from Southampton to Belfast with the following airlines, including: Aer Lingus Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 1 hour 36 minutes to fly from Southampton (SOU) to Belfast (BFS).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Southampton to Belfast 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.
  • Based on Trip.com data in the past 4 weeks, there is 13 flight per week flying from Southampton to Belfast. You can check the weekly schedule for popular airlines on this route below: Aer Lingus: S/M/T/W/T/F/S -- EI3607 (15:57) Aer Lingus: S/-/-/W/T/-/S -- EI3605 (12:26)
  • To find best deals on flights from Southampton to Belfast, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Mar 4, with one-way flights priced at just S$ 59.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Aer Lingus.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Belfast travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Southampton to Belfast is September, when demand for travel is lower.
  • After crunching the numbers on our January flight calendar, it's currently cheapest to fly from Southampton to Belfast on January 16, 2026 with Aer Lingus, with prices starting at S$ 148.
  • You can land at any one of the following hubs in Belfast, with Southampton Airport to George Best Belfast City Airport (SOU-BHD) is by far the most common option on this route: George Best Belfast City Airport (BHD) Belfast International Airport (BFS).
  • The time difference between Belfast and Southampton is 0h.
  • 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.