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Cheap flights from Belfast to Portsmouth from £44

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LHR
11 Jun — 18 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Belfast to Portsmouth are usually found in March or September, booked 45 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Belfast to Portsmouth

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Portsmouth
Explore the most affordable flight options available from Belfast to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 May 2026.

Mon 1/610:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Sat 13/612:15
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 11/5£58
Mon 15/610:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Mon 29/612:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 10/5£59
Mon 7/910:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Fri 11/912:20
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 10/5£71
Sat 6/610:30
BFS
-
SOU
Nonstop1h 15m
easyJet
Mon 8/612:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 8/5£76
Fri 5/610:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Mon 8/612:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 11/5£77
Tue 19/517:25
BHD
-
SOU
Nonstop1h 35m
Aer Lingus
Thu 21/508:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 12/5£87
Sat 16/517:30
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Sun 17/508:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 7/5£89
Sat 12/910:30
BFS
-
SOU
Nonstop1h 15m
easyJet
Sat 19/912:15
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 11/5£90
Sat 23/506:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Wed 27/512:35
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 8/5£91
Tue 9/606:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Tue 16/612:35
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 10/5£93
Wed 29/710:25
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Sat 1/819:40
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 10/5£94
Fri 5/606:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Mon 8/608:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 11/5£97

Find flight deals from Belfast to Portsmouth

Keep the following information in mind while searching for Belfast to Portsmouth flight deals. Data was last updated 12 May 2026.

Round-trip from

£58

One-way from

£44

Popular in

January

Cheapest in

March

Average price

£106
easyJet
  • easyJet
  • 1/6-13/6
  • Nonstop
  • 2h 30m total
  • Belfast to Portsmouth
Search Deals
Aer Lingus
  • Aer Lingus
  • 3/6
  • Nonstop
  • 1h 45m total
  • Belfast to Portsmouth
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£16 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to Portsmouth 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 12 May 2026.
Use the filters below to find and compare flights from Belfast to Portsmouth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 1/6

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Sat 13/6

12:15-13:30

Nonstop1h 15m

£58

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 15/6

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Mon 29/6

12:25-13:40

Nonstop1h 15m

£59

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 7/9

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Fri 11/9

12:20-13:35

Nonstop1h 15m

£71

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 5/6

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Mon 8/6

12:25-13:40

Nonstop1h 15m

£77

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 12/9

22:25-09:25

1 stop11h 00m

Southampton Eastleigh

Sat 19/9

07:50-08:05

1 stop24h 15m

£122

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 5/6

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Sun 7/6

12:35-13:50

Nonstop1h 15m

£132

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 6/6

10:30-11:45

Nonstop1h 15m

Southampton Eastleigh

Mon 8/6

20:40-09:20

1 stop12h 40m

£132

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 22/5

14:30-07:20

1 stop16h 50m

Southampton Eastleigh

Mon 25/5

12:25-13:40

Nonstop1h 15m

£137

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 24/9

17:25-19:00

Nonstop1h 35m

Southampton Eastleigh

Mon 28/9

19:30-21:05

Nonstop1h 35m

£231

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 26/6

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sun 28/6

12:35-14:10

Nonstop1h 35m

£307

Flights are sorted by cheapest return flights first.

Deals found on 11/5

Showing 1-10 of 32 resultsSorted by cheapest first
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3
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Best time to book a flight from Belfast to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Belfast 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 Belfast to Portsmouth

What is the cheapest time of day to fly from BFS to P0R?

Find hourly flight availability from Belfast to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 May 2026.

A simple way to save on the total cost of your ticket is to fly from Belfast to Portsmouth in the evening. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly return from Belfast to Portsmouth. Price data was last updated on 9 May 2026.

Travellers seeking maximum savings on their Belfast to Portsmouth flight should consider departing on Friday evenings when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated 12 May 2026.
Get a feel of what it's like to fly with Aer Lingus and easyJet from Belfast to Portsmouth by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,553 reviews
Check prices

Comfort

7.2

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.3
Good
1,553 reviews
Aer Lingus
7.3
Good
1,553 reviews
Check prices

Comfort

7.2

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
easyJet
6.9
Okay
1,901 reviews
Aer Lingus
7.3
Good
1,553 reviews
Check prices

Comfort

7.2

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Related info for your journey

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

  • How long is the flight from Belfast to Portsmouth?

    There are many flights that can get you from Belfast to Portsmouth in 1h 15m. Fly via easyJet or British Airways to get the fastest option. Airlines will cover a distance of 326 mi. All flights are typically direct.

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

    £25 is the cheapest one-way deal found within the past few days, from easyJet. You may also be able to find cheap deals on Aer Lingus and British Airways, with prices starting from £40 and £84, respectively.

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

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

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

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

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

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

See more FAQs

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.

Top 5 airlines flying from Belfast to Portsmouth

Discover the top 5 airlines that operate flights from Belfast to Portsmouth. 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 12 May 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£19Average£59FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£19Average£91FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£79Average£154FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£85Average£170FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£138Average£218FlexibilityNo cancel feeOn-time79%
Search Loganair 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 Belfast to Portsmouth?

Deals for Belfast to Portsmouth flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Belfast to Portsmouth for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Portsmouth from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Belfast to Portsmouth 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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