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Cheap flights from Northern Ireland 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.
BFS — LHR
29 Apr — 6 May1
1 adult

Cheap flight deals from Northern Ireland to Portsmouth

Keep the following information in mind while searching for Northern Ireland to Portsmouth flight deals. Data was last updated 24 April 2025.

Round-trip from

£53

One-way from

£25

Popular in

June

Cheapest in

January

Average price

£62
easyJet
  • easyJet
  • 14/6-15/6
  • Nonstop
  • 2h 35m total
  • Northern Ireland to Portsmouth
Search Deals
easyJet
  • easyJet
  • 14/6
  • Nonstop
  • 1h 15m total
  • Northern Ireland to Portsmouth
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Northern Ireland to Portsmouth

Cheapest flights from Northern Ireland to Portsmouth
Explore the most affordable flight options available from Northern Ireland to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 April 2025.

Sat 14/613:35BFS - SOU
Nonstop1h 15measyJet
Sun 15/612:00SOU - BFS
Nonstop1h 20measyJet
Deal found 22/4£53
Mon 9/611:00BHD - SOU
Nonstop1h 40mAer Lingus
Wed 18/616:45SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 23/4£95
Sat 14/614:00BFS - SOU
2 stops18h 35mMultiple Airlines
Sun 15/612:00SOU - BFS
Nonstop1h 20mMultiple Airlines
Deal found 22/4£138
Mon 9/611:00BHD - SOU
Nonstop1h 40mMultiple Airlines
Wed 18/609:00SOU - BHD
1 stop5h 35mMultiple Airlines
Deal found 23/4£202
Fri 23/506:40BHD - SOU
Nonstop1h 45mBritish Airways
Mon 26/513:10SOU - BHD
Nonstop1h 35mBritish Airways
Deal found 23/4£226
Sat 13/906:30BHD - SOU
1 stop11h 00mKLM
Sat 27/909:20SOU - BHD
1 stop11h 55mKLM
Deal found 23/4£318

Cheapflights Fare Finder

Customise your flight search to find flights from Northern Ireland 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 24 April 2025.
Use the filters below to find and compare flights from Northern Ireland to Portsmouth that are best for you.

Fly from

Northern Ireland

Fly to

Portsmouth

Route

Depart

Return

Price

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 14/6

13:35-14:50

Nonstop1h 15m

Southampton Eastleigh

Sun 15/6

12:00-13:20

Nonstop1h 20m

£53

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 9/6

11:00-12:40

Nonstop1h 40m

Southampton Eastleigh

Wed 18/6

16:45-18:20

Nonstop1h 35m

£95

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 14/6

14:00-08:35

2 stops18h 35m

Southampton Eastleigh

Sun 15/6

12:00-13:20

Nonstop1h 20m

£138

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 9/6

11:00-12:40

Nonstop1h 40m

Southampton Eastleigh

Wed 18/6

09:00-14:35

1 stop5h 35m

£202

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 23/5

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Mon 26/5

13:10-14:45

Nonstop1h 35m

£226

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 13/9

06:30-17:30

1 stop11h 00m

Southampton Eastleigh

Sat 27/9

09:20-21:15

1 stop11h 55m

£318

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 14/6

13:35-14:50

Nonstop1h 15m

£25

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 14/6

14:00-08:35

2 stops18h 35m

£103

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 14/6

14:40-16:15

Nonstop1h 35m

£120

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 29/7

18:50-08:10

1 stop13h 20m

£232

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 11 results
1
2

Best time to book a flight from Northern Ireland to Portsmouth

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

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

Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Portsmouth (average of £112). Flying from Northern Ireland to Portsmouth in August is currently the most expensive (average of £164). 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 NIR to P0R?

Find hourly flight availability from Northern Ireland 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 24 April 2025.

When flying from Northern Ireland 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.

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 24 April 2025.
KLM
7.8
Good
1,333 reviews
Check prices

Comfort

7.7

Entertainment

7.1

Food

7.2

Overall

7.8

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Comfort

7.7

Entertainment

7.1

Food

7.2

Overall

7.8

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Aer Lingus
7.0
Good
1,068 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Comfort

7.7

Entertainment

7.1

Food

7.2

Overall

7.8

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
easyJet
6.9
Okay
1,798 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Comfort

7.7

Entertainment

7.1

Food

7.2

Overall

7.8

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
British Airways
6.6
Okay
6,799 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Comfort

7.7

Entertainment

7.1

Food

7.2

Overall

7.8

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland 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 Northern Ireland to Portsmouth one-way?

    For one-way options, check prices for easyJet. According to our data, you can fly for as low as £25. Users have also found prices from £120 and £254 on British Airways and Aer Lingus, respectively.

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

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

  • How can I find direct flights from Northern Ireland to Portsmouth?

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland 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 Northern Ireland to Portsmouth?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Portsmouth (average of £112). Flying from Northern Ireland to Portsmouth in August is currently the most expensive (average of £164). 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

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 Northern Ireland to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Northern Ireland to Portsmouth

Discover the top 6 airlines that operate flights from Northern Ireland 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 24 April 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£26Average£47FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
RyanairCheapest£28Average£47FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£30Average£87FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£59Average£107FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£74Average£152FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£131Average£210FlexibilityNo 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 Northern Ireland to Portsmouth?

Deals for Northern Ireland 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 Northern Ireland to Portsmouth?

Cheapflights helps you find that perfect flight to Portsmouth from Northern Ireland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Northern Ireland to Portsmouth with no change fees.

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

Not ready to book yet? You can track prices for flights from Northern Ireland to Portsmouth on Cheapflights with our Price Alert feature and get notified when better prices are available.

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