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 £38 and £119 on Aer Lingus and British Airways, respectively.

How far in advance should I book a flight from Northern Ireland to Portsmouth?

To save on the cost of your flight from Northern Ireland to Portsmouth, book at least 56 days before your planned departure. Booking around this time can save you about 140% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £45 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £124.

What is the cheapest month to fly from Northern Ireland to Portsmouth?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, January can be a great choice for travel to Portsmouth. Flights to Portsmouth from Northern Ireland in January are about £63 on average during January, but can be found for as low as £29.

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.

£25+ Flights from Northern Ireland to Portsmouth

Cheap flight deals from Northern Ireland to Portsmouth

Round-trip from	£46
One-way from	£25
Popular in	July
Cheapest in	January
Average price	£63

easyJet
17/3-19/3
Nonstop
2h 30m total
Northern Ireland to Portsmouth

Search Deals

easyJet
14/6
Nonstop
1h 15m total
Northern Ireland to Portsmouth

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (£14 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£2 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 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 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

Best flights from Northern Ireland to Portsmouth
Discover carefully curated flight deals from Northern Ireland to Portsmouth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Mon 17/310:45BFS - SOU

Nonstop1h 10measyJet

Wed 19/316:10SOU - BFS

Nonstop1h 20measyJet

Deal found 20/2£46

Sat 5/406:40BHD - SOU

Nonstop1h 45mAer Lingus

Mon 7/408:55SOU - BHD

Nonstop1h 35mAer Lingus

Deal found 21/2£80

Sat 5/406:40BHD - SOU

Nonstop1h 45mMultiple Airlines

Mon 7/415:25SOU - BHD

1 stop23h 05mMultiple Airlines

Deal found 21/2£116

Fri 25/406:40BHD - SOU

Nonstop1h 45mBritish Airways

Mon 28/416:45SOU - BHD

Nonstop1h 35mBritish Airways

Deal found 21/2£225

Sun 27/421:35BFS - SOU

1 stop17h 20mMultiple Airlines

Mon 28/420:30SOU - BFS

2 stops14h 50mMultiple Airlines

Deal found 20/2£167

Sat 5/414:20BHD - SOU

2 stops25h 45measyJet

Mon 7/415:25SOU - BHD

2 stops20h 40measyJet

Deal found 21/2£234

Direct flights from Northern Ireland to Portsmouth
Explore direct flight options from Northern Ireland to Portsmouth based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 February 2025.

Mon 17/310:45BFS - SOU

Nonstop1h 10measyJet

Wed 19/316:10SOU - BFS

Nonstop1h 20measyJet

Deal found 20/2£46

Sat 5/406:40BHD - SOU

Nonstop1h 45mAer Lingus

Mon 7/408:55SOU - BHD

Nonstop1h 35mAer Lingus

Deal found 21/2£80

Fri 14/306:40BHD - SOU

Nonstop1h 45mMultiple Airlines

Mon 17/315:40SOU - BHD

Nonstop1h 40mMultiple Airlines

Deal found 20/2£175

Fri 25/406:40BHD - SOU

Nonstop1h 45mBritish Airways

Mon 28/416:45SOU - BHD

Nonstop1h 35mBritish Airways

Deal found 21/2£225

Last-minute flights from Northern Ireland to Portsmouth
Discover last-minute flight deals from Northern Ireland to Portsmouth. Data last updated 21 February 2025 and is based on user searches.

Thu 27/206:40BHD - SOU

Nonstop1h 45mAer Lingus

Sun 2/319:25SOU - BHD

Nonstop1h 35mAer Lingus

Deal found 20/2£82

Thu 27/207:10BHD - SOU

1 stop10h 10mMultiple Airlines

Sun 2/319:25SOU - BHD

Nonstop1h 35mMultiple Airlines

Deal found 20/2£192

Thu 27/209:50BFS - SOU

1 stop21h 45measyJet

Sun 2/318:05SOU - BFS

1 stop22h 55measyJet

Deal found 20/2£260

Thu 27/209:50BFS - SOU

1 stop21h 45mMultiple Airlines

Sun 2/309:30SOU - BFS

2 stops36h 30mMultiple Airlines

Deal found 20/2£307

Fri 7/317:30BHD - SOU

1 stop15h 40mMultiple Airlines

Sun 9/309:35SOU - BHD

Nonstop1h 40mMultiple Airlines

Deal found 20/2£147

Fri 7/321:00BFS - SOU

1 stop12h 10mMultiple Airlines

Sun 9/320:10SOU - BFS

2 stops24h 35mMultiple Airlines

Deal found 20/2£211

Fri 14/311:45BFS - SOU

Nonstop1h 10measyJet

Mon 17/312:25SOU - BFS

Nonstop1h 20measyJet

Deal found 20/2£82

Tue 18/306:40BHD - SOU

Nonstop1h 45mBritish Airways

Wed 19/319:25SOU - BHD

Nonstop1h 35mBritish Airways

Deal found 21/2£226

One-way flights from Northern Ireland to Portsmouth
Search for one-way flight options from Northern Ireland to Portsmouth. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Sat 14/613:35BFS - SOU

Nonstop1h 15measyJet

Deal found 20/2£25

Tue 15/406:40BHD - SOU

Nonstop1h 45mAer Lingus

Deal found 21/2£38

Tue 15/418:45BHD - SOU

1 stop13h 45mMultiple Airlines

Deal found 21/2£102

Sat 1/306:00BFS - SOU

2 stops26h 45mMultiple Airlines

Deal found 20/2£107

Sat 14/606:40BHD - SOU

Nonstop1h 45mBritish Airways

Deal found 21/2£119

Find flights from Northern Ireland to Portsmouth within your budget

Fly from

Fly to

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

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.

Travel insights for flights from Northern Ireland to Portsmouth

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

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 £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 NIR to P0R?

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

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

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 a feel of what it's like to fly with Aer Lingus, easyJet and British Airways from Northern Ireland to Portsmouth by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.0

Good

1,070 reviews

Check prices

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

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

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

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

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 £38 and £119 on Aer Lingus and British Airways, 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 £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

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Northern Ireland to Portsmouth

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£21	Average£41	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
Ryanair	Cheapest£30	Average£49	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
easyJet	Cheapest£32	Average£86	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
Aer Lingus	Cheapest£61	Average£127	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
British Airways	Cheapest£78	Average£151	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Loganair	Cheapest£138	Average£198	FlexibilityNo cancel fee	On-time79%	Search Loganair flights

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

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.

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 21 February 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Northern Ireland to Portsmouth

Cheapest flights from Northern Ireland to PortsmouthExplore 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 21 February 2025.

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 21 February 2025.

Find flights from Northern Ireland to Portsmouth within your budget

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.

Travel insights for flights from Northern Ireland to Portsmouth

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

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

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 21 February 2025.

Rainfall in Portsmouth by month

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

Temperature in Portsmouth by month

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

Reviews of airlines servicing Portsmouth

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?

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

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

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

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

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.

Top 6 airlines flying from Northern Ireland to Portsmouth

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?

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

Can Cheapflights 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?

100% Free

Book with Flexibility

Travel Smart

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 21 February 2025.