How long is the flight from Portsmouth to Northern Ireland?

For as low as £46, easyJet can have you in Northern Ireland from Portsmouth in 1h 20m. The distance between Portsmouth and Northern Ireland is about 326 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Northern Ireland, 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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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

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

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

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

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

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

£20+ Cheap Flights from Portsmouth to Northern Ireland

Cheap flight deals from Portsmouth to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Portsmouth to Northern Ireland
Explore the most affordable flight options available from Portsmouth to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 November 2026.

Fri 11/1213:25 -

1 stop9h 00m

Fri 18/1207:00 -

1 stop5h 55m

Deal found 10/11£86

Thu 10/1216:10 -

Nonstop1h 35m

Mon 14/1210:25 -

Nonstop1h 40m

Deal found 13/11£92

Thu 10/1216:10 -

Nonstop1h 35m

Mon 14/1208:00 -

1 stop6h 55m

Deal found 14/11£98

Sat 28/1108:50 -

Nonstop1h 35m

Wed 2/1214:05 -

Nonstop1h 35m

Deal found 13/11£98

Fri 11/1213:25 -

1 stop9h 00m

Mon 14/1208:40 -

1 stop6h 15m

Deal found 12/11£107

Thu 10/1213:55 -

1 stop8h 25m

Mon 14/1208:40 -

1 stop6h 15m

Deal found 10/11£107

Mon 30/1117:55 -

1 stop22h 20m

Thu 31/1221:05 -

1 stop15h 50m

Deal found 10/11£108

Wed 30/1215:05 -

1 stop5h 50m

Fri 1/108:25 -

1 stop4h 30m

Deal found 12/11£118

Fri 11/1216:10 -

Nonstop1h 35m

Mon 14/1210:25 -

Nonstop1h 40m

Deal found 12/11£121

Mon 28/1212:20 -

1 stop9h 20m

Fri 1/108:25 -

1 stop4h 30m

Deal found 12/11£122

Wed 30/1215:05 -

1 stop5h 50m

Thu 31/1217:20 -

1 stop19h 35m

Deal found 12/11£123

Mon 28/1212:20 -

1 stop9h 20m

Mon 4/107:20 -

1 stop7h 35m

Deal found 13/11£123

Best flights from Portsmouth to Northern Ireland
Discover carefully curated flight deals from Portsmouth to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 November 2026.

Mon 22/211:05 -

Nonstop1h 20m

Fri 26/216:55 -

Nonstop1h 10m

Deal found 10/11£46

Fri 2/412:20 -

Nonstop1h 15m

Mon 5/410:35 -

Nonstop1h 15m

Deal found 12/11£82

Mon 8/308:40 -

1 stop8h 10m

Wed 31/309:50 -

1 stop7h 00m

Deal found 14/11£175

Fri 11/1213:25 -

1 stop9h 00m

Fri 18/1207:00 -

1 stop5h 55m

Deal found 10/11£86

Mon 7/1216:10 -

Nonstop1h 35m

Wed 9/1210:25 -

Nonstop1h 40m

Deal found 14/11£234

Mon 8/311:05 -

Nonstop1h 20m

Wed 31/318:40 -

1 stop16h 35m

Deal found 14/11£98

Fri 11/1213:25 -

1 stop9h 00m

Mon 14/1208:40 -

1 stop6h 15m

Deal found 12/11£107

Thu 10/1213:55 -

1 stop8h 25m

Mon 14/1208:40 -

1 stop6h 15m

Deal found 10/11£107

Mon 22/211:05 -

Nonstop1h 20m

Thu 25/221:00 -

1 stop15h 00m

Deal found 14/11£107

Mon 22/217:30 -

1 stop15h 40m

Fri 26/217:20 -

1 stop15h 35m

Deal found 14/11£176

Mon 30/1117:55 -

1 stop22h 20m

Thu 31/1221:05 -

1 stop15h 50m

Deal found 10/11£108

Sat 2/109:25 -

1 stop23h 45m

Tue 5/117:05 -

1 stop23h 45m

Deal found 11/11£188

Thu 10/1212:35 -

Nonstop1h 35m

Mon 14/1214:05 -

Nonstop1h 35m

Deal found 13/11£235

Wed 2/1216:10 -

Nonstop1h 35m

Thu 3/1210:25 -

Nonstop1h 40m

Deal found 11/11£235

Mon 22/215:20 -

1 stop23h 10m

Fri 26/216:50 -

1 stop14h 55m

Deal found 12/11£137

Tue 8/1219:40 -

Nonstop1h 35m

Tue 15/1217:35 -

Nonstop1h 35m

Deal found 10/11£237

Fri 11/1216:10 -

Nonstop1h 35m

Fri 18/1210:25 -

Nonstop1h 40m

Deal found 13/11£250

Fri 26/317:30 -

1 stop15h 40m

Mon 29/317:30 -

1 stop23h 20m

Deal found 14/11£278

Tue 8/1212:35 -

Nonstop1h 35m

Tue 22/1210:25 -

Nonstop1h 40m

Deal found 10/11£253

Find flight deals from Portsmouth to Northern Ireland

Round-trip from	£36
One-way from	£20
Popular in	July
Cheapest in	January
Average price	£56

easyJet
26/2-5/3
Nonstop
2h 30m total
Portsmouth to Northern Ireland

Search Deals

easyJet
19/2-31/12
Nonstop
1h 20m total
Portsmouth to Northern Ireland

Search Deals

Highest demand for flights based on searches. 24% potential increase in price (£19 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£3 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SouthamptonBelfast

SOU Southampton Eastleigh - BFS Belfast Intl

SOUBFS

Southampton Eastleigh

Fri 19/2

18:35-19:55

Nonstop1h 20m

Belfast Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£20

SouthamptonBelfast

SOU Southampton Eastleigh - BFS Belfast Intl

SOUBFS

Southampton Eastleigh

Mon 15/2

11:05-12:25

Nonstop1h 20m

Belfast Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£23

SouthamptonBelfast

SOU Southampton Eastleigh - BHD Belfast City

SOUBHD

Southampton Eastleigh

Fri 5/2

19:15-20:50

Nonstop1h 35m

Belfast City

Wed 31/12

00:00-00:00

Nonstop0h 00m

£36

SouthamptonBelfast

SOU Southampton Eastleigh - BHD Belfast City

SOUBHD

Southampton Eastleigh

Thu 18/2

12:35-14:10

Nonstop1h 35m

Belfast City

Wed 31/12

00:00-00:00

Nonstop0h 00m

£38

SouthamptonBelfast

SOU Southampton Eastleigh - BFS Belfast Intl

SOUBFS

Southampton Eastleigh

Mon 22/2

11:05-12:25

Nonstop1h 20m

Belfast Intl

Fri 26/2

16:55-18:05

Nonstop1h 10m

£46

SouthamptonBelfast

SOU Southampton Eastleigh - BHD Belfast City

SOUBHD

Southampton Eastleigh

Fri 19/2

12:35-08:55

1 stop20h 20m

Belfast City

Wed 31/12

00:00-00:00

Nonstop0h 00m

£48

SouthamptonBelfast

SOU Southampton Eastleigh - BFS Belfast Intl

SOUBFS

Southampton Eastleigh

Mon 15/2

15:20-21:40

1 stop6h 20m

Belfast Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£51

SouthamptonBelfast

SOU Southampton Eastleigh - BFS Belfast Intl

SOUBFS

Southampton Eastleigh

Thu 31/12

13:55-22:20

1 stop8h 25m

Belfast Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£69

SouthamptonBelfast

SOU Southampton Eastleigh - BHD Belfast City

SOUBHD

Southampton Eastleigh

Sat 20/2

08:20-17:45

1 stop9h 25m

Belfast City

Wed 31/12

00:00-00:00

Nonstop0h 00m

£70

SouthamptonBelfast

SOU Southampton Eastleigh - BFS Belfast Intl

SOUBFS

Southampton Eastleigh

Thu 18/2

16:35-07:00

1 stop14h 25m

Belfast Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£80

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 40 resultsSorted by cheapest first

Best time to book a flight from Portsmouth to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Portsmouth with our price prediction graph.

SOU-BFS

SOU-BHD

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 Portsmouth to Northern Ireland

P0R-GBNIR

SOU-BFS

SOU-BHD

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

One of the essential ways to save on airfare from Portsmouth to Northern Ireland is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 26% on airfare.

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

Airfare is below average for this route at the moment.

Portsmouth to Northern Ireland flights typically cost between £101 and £148 in February.
The cheapest return price found within the last 5 days was £36 on easyJet (26 Feb–5 Mar).

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

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

Reviews of airlines servicing Northern Ireland

Check out reviews from past customers who have flown with Aer Lingus and easyJet from Portsmouth to Northern Ireland to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.3

Good

1,886 reviews

Check prices

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

1,886 reviews

Aer Lingus

7.3

Good

1,886 reviews

Check prices

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

1,912 reviews

Aer Lingus

7.3

Good

1,886 reviews

Check prices

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

How long is the flight from Portsmouth to Northern Ireland?
For as low as £46, easyJet can have you in Northern Ireland from Portsmouth in 1h 20m. The distance between Portsmouth and Northern Ireland is about 326 mi. Both multi-stop and direct flights can be found to your destination and back.
Can I find deals for flights from Portsmouth to Northern Ireland that include hotel bookings?
Yes. In addition to deals on Portsmouth to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Northern Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Northern Ireland.
Can I find deals for business class flights from Portsmouth to Northern Ireland?
Yes. Cheapflights offers flight deals from Portsmouth to Northern Ireland 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

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Top 5 airlines flying from Portsmouth to Northern Ireland

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£14	Average£84	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
Ryanair	Cheapest£20	Average£72	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
Aer Lingus	Cheapest£79	Average£131	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
British Airways	Cheapest£97	Average£184	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Loganair	Cheapest£143	Average£264	FlexibilityNo cancel fee	On-time79%	Search Loganair flights

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How does Cheapflights help users find flights from Portsmouth to Northern Ireland?

When you search for this flight from Portsmouth to Northern Ireland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from Portsmouth to Northern Ireland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portsmouth to Northern Ireland, users can toggle the no change fees filter when performing a flight search.

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

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Cheap flights from Portsmouth to Northern Ireland from £20

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Northern Ireland

Cheapest flights from Portsmouth to Northern IrelandExplore the most affordable flight options available from Portsmouth to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 November 2026.

Explore the most affordable flight options available from Portsmouth to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 November 2026.

Best flights from Portsmouth to Northern IrelandDiscover carefully curated flight deals from Portsmouth to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 November 2026.

Discover carefully curated flight deals from Portsmouth to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 November 2026.

Direct flights from Portsmouth to Northern IrelandExplore direct flight options from Portsmouth to Northern Ireland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 November 2026.

Explore direct flight options from Portsmouth to Northern Ireland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 November 2026.

Last-minute flights from Portsmouth to Northern IrelandDiscover last-minute flight deals from Portsmouth to Northern Ireland. Data last updated 15 November 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Northern Ireland. Data last updated 15 November 2026 and is based on user searches.

One-way flights from Portsmouth to Northern IrelandSearch for one-way flight options from Portsmouth to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 15 November 2026.

Search for one-way flight options from Portsmouth to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 15 November 2026.

Find flight deals from Portsmouth to Northern Ireland

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Northern Ireland that are best for you.

Best time to book a flight from Portsmouth to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Portsmouth with our price prediction graph.

Cheapflights Insights

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

Find hourly flight availability from Portsmouth to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 November 2026.

One of the essential ways to save on airfare from Portsmouth to Northern Ireland is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 26% on airfare.

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

Airfare is below average for this route at the moment.

Portsmouth to Northern Ireland flights typically cost between £101 and £148 in February.The cheapest return price found within the last 5 days was £36 on easyJet (26 Feb–5 Mar).

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Northern Ireland. Price data was last updated on 14 November 2026.

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

Reviews of airlines servicing Northern Ireland

Check out reviews from past customers who have flown with Aer Lingus and easyJet from Portsmouth to Northern Ireland to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Portsmouth to Northern Ireland?

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

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

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

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 Portsmouth to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Northern Ireland by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United Kingdom

Book a non-stop flight to one of these other cities located in United Kingdom.

Search flights from Portsmouth to Northern Ireland by cabin class

Find flights from Portsmouth to Northern Ireland, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Portsmouth and Northern Ireland flights

Browse other Portsmouth and Northern Ireland flight options. Last updated on 15 November 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Northern Ireland

Find the right flight back to Portsmouth after your stay in Northern Ireland

Top 5 airlines flying from Portsmouth to Northern Ireland

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How does Cheapflights help users find flights from Portsmouth to Northern Ireland?

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

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

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

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Cheapest flights from Portsmouth to Northern Ireland
Explore the most affordable flight options available from Portsmouth to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 November 2026.

Best flights from Portsmouth to Northern Ireland
Discover carefully curated flight deals from Portsmouth to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 November 2026.

Direct flights from Portsmouth to Northern Ireland
Explore direct flight options from Portsmouth to Northern Ireland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 November 2026.

Last-minute flights from Portsmouth to Northern Ireland
Discover last-minute flight deals from Portsmouth to Northern Ireland. Data last updated 15 November 2026 and is based on user searches.

One-way flights from Portsmouth to Northern Ireland
Search for one-way flight options from Portsmouth to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 15 November 2026.

Portsmouth to Northern Ireland flights typically cost between £101 and £148 in February.
The cheapest return price found within the last 5 days was £36 on easyJet (26 Feb–5 Mar).