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Cheap flights from Belfast to Portsmouth from £25

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 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LHR
26 Feb — 5 Mar1
1 adult

The best prices from Belfast to Portsmouth are usually found in March or January, booked 46 days in advance, depart on a Monday or Friday and return on a Thursday

Cheap flight deals from Belfast to Portsmouth

Keep the following information in mind while searching for Belfast to Portsmouth flight deals. Data was last updated 21 February 2025.

Round-trip from

£46

One-way from

£25

Popular in

June

Cheapest in

March

Average price

£87
easyJet
  • easyJet
  • 17/3-19/3
  • Nonstop
  • 2h 30m total
  • Belfast to Portsmouth
Search Deals
easyJet
  • easyJet
  • 14/6
  • Nonstop
  • 1h 15m total
  • Belfast to Portsmouth
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Belfast to Portsmouth

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 21 February 2025.

Sun 6/410:10BFS - SOU
Nonstop1h 15measyJet
Mon 28/411:50SOU - BFS
Nonstop1h 20measyJet
Deal found 20/2£57
Sat 5/406:40BHD - SOU
Nonstop1h 45mAer Lingus
Mon 7/408:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 21/2£80
Fri 7/317:30BHD - SOU
1 stop15h 40mMultiple Airlines
Sun 9/309:35SOU - BHD
Nonstop1h 40mMultiple Airlines
Deal found 20/2£147
Sun 27/421:35BFS - SOU
1 stop17h 20mMultiple Airlines
Mon 28/420:30SOU - BFS
2 stops14h 50mMultiple Airlines
Deal found 20/2£167
Fri 25/406:40BHD - SOU
Nonstop1h 45mBritish Airways
Mon 28/416:45SOU - BHD
Nonstop1h 35mBritish Airways
Deal found 21/2£225
Sat 5/414:20BHD - SOU
2 stops25h 45measyJet
Mon 7/415:25SOU - BHD
2 stops20h 40measyJet
Deal found 21/2£234

Find flights from Belfast to Portsmouth within your budget

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 21 February 2025.

Fly from

Belfast

Fly to

Portsmouth

Route

Depart

Return

Price

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 27/4

10:10-11:25

Nonstop1h 15m

Southampton Eastleigh

Mon 28/4

11:50-13:10

Nonstop1h 20m

£55

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 5/4

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Mon 7/4

08:55-10:30

Nonstop1h 35m

£80

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 5/4

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Mon 7/4

15:25-14:30

1 stop23h 05m

£116

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 27/4

21:35-14:55

1 stop17h 20m

Southampton Eastleigh

Mon 28/4

20:30-11:20

2 stops14h 50m

£167

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 25/4

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Mon 28/4

16:45-18:20

Nonstop1h 35m

£225

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 5/4

14:20-16:05

2 stops25h 45m

Southampton Eastleigh

Mon 7/4

15:25-12:05

2 stops20h 40m

£234

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 14/6

13:35-14:50

Nonstop1h 15m

£25

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 15/4

06:40-08:25

Nonstop1h 45m

£38

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 15/4

18:45-08:30

1 stop13h 45m

£102

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 1/3

06:00-08:45

2 stops26h 45m

£107

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 11 results
1
2

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.

Travel insights for flights from Belfast to Portsmouth

Get recent, data-driven insights about flights from Belfast to Portsmouth including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Belfast to Portsmouth. Price data was last updated on 14 February 2025.

The price you pay for your flight from Belfast to Portsmouth may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Belfast to Portsmouth (average of £112). Flying from Belfast to Portsmouth in August is currently the most expensive (average of £163). 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 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 21 February 2025.

When flying from Belfast to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 16 December 2024.

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

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, 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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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 21 February 2025.
To help decide which airline to fly from Belfast to Portsmouth, see what other customers have to say about Aer Lingus, easyJet and British Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Comfort

7.0

Food

6.4

Entertainment

6.7

Overall

7.0

Crew

7.9

Boarding

7.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Nov 2024

LHR - DUB

Our experience with Aer Lingus was really good, all the crew members were really friendly

Aer Lingus
7.0
Good
1,070 reviews
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Comfort

7.0

Food

6.4

Entertainment

6.7

Overall

7.0

Crew

7.9

Boarding

7.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Nov 2024

LHR - DUB

Our experience with Aer Lingus was really good, all the crew members were really friendly

easyJet
6.9
Okay
1,816 reviews
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Comfort

7.0

Food

6.4

Entertainment

6.7

Overall

7.0

Crew

7.9

Boarding

7.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Nov 2024

LHR - DUB

Our experience with Aer Lingus was really good, all the crew members were really friendly

British Airways
6.6
Okay
6,762 reviews
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Comfort

7.0

Food

6.4

Entertainment

6.7

Overall

7.0

Crew

7.9

Boarding

7.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Nov 2024

LHR - DUB

Our experience with Aer Lingus was really good, all the crew members were really friendly

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.

  • 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 £38 and £119, 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.

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

    Currently, January is the cheapest month in which you can book a flight from Belfast to Portsmouth (average of £112). Flying from Belfast to Portsmouth in August is currently the most expensive (average of £163). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Belfast to Portsmouth

Discover the top 6 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£21Average£41FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
RyanairCheapest£30Average£49FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£32Average£86FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£61Average£127FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£76Average£146FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£138Average£198FlexibilityNo 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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