How long is the flight from Portsmouth to Ireland?

For as low as £98, Aer Lingus can have you in Ireland from Portsmouth in 1h 40m. The distance between Portsmouth and Ireland is about 268 mi. Generally, flights for this route are direct.

In terms of precipitation, rainfall in Ireland ranges from 49.0 - 79.0 inches per month. October is typically the wettest month, when rainfall can reach 79.0 mm. February is typically the driest time to visit Ireland when rainfall is around 49.0 mm.

If weather is an important factor for your trip to 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).

What are the cheapest flights from Portsmouth to Ireland?

Looking at all options, your cheapest flight can be booked for £62. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £95 on average, our data indicates £711 when flying from Portsmouth to Ireland.

What are the most reliable airlines from Portsmouth to Ireland?

Consider Air Canada (87%), Aer Lingus (80%) or Qatar Airways (80%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Ireland.

What are the most popular airlines that fly from Portsmouth to Ireland?

Aer Lingus, British Airways and KLM are the most popular airlines when flying from Portsmouth to Ireland.

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

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

How can I find direct flights from Portsmouth to Ireland?

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

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

Yes. Cheapflights offers flight deals from Portsmouth to 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.

£57+ Cheap Flights from Portsmouth to Ireland

Cheap flight deals from Portsmouth to Ireland

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Portsmouth to Ireland
Explore the most affordable flight options available from Portsmouth to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Tue 20/1020:00 -

Nonstop1h 35m

Wed 28/1007:00 -

Nonstop1h 40m

Deal found 22/8£93

Thu 22/1009:20 -

Nonstop1h 40m

Sun 25/1007:00 -

Nonstop1h 40m

Deal found 21/8£98

Wed 21/1010:45 -

1 stop12h 50m

Tue 27/1007:00 -

Nonstop1h 40m

Deal found 23/8£98

Sat 24/1020:00 -

Nonstop1h 35m

Tue 27/1007:00 -

Nonstop1h 40m

Deal found 21/8£99

Wed 21/1020:00 -

Nonstop1h 35m

Tue 27/1007:00 -

Nonstop1h 40m

Deal found 23/8£100

Wed 21/1010:45 -

1 stop12h 50m

Wed 28/1021:10 -

1 stop11h 30m

Deal found 24/8£101

Tue 6/1009:15 -

Nonstop1h 40m

Tue 13/1017:50 -

Nonstop1h 40m

Deal found 22/8£103

Tue 20/1013:25 -

1 stop8h 15m

Wed 28/1007:00 -

Nonstop1h 40m

Deal found 22/8£103

Sat 5/920:00 -

Nonstop1h 35m

Sat 12/917:50 -

Nonstop1h 40m

Deal found 24/8£104

Mon 5/1019:20 -

2 stops19h 00m

Mon 12/1020:55 -

2 stops15h 55m

Deal found 23/8£139

Sun 4/1012:35 -

2 stops19h 15m

Sun 11/1021:40 -

2 stops14h 10m

Deal found 22/8£155

Fri 2/1014:30 -

2 stops17h 55m

Tue 6/1014:45 -

2 stops19h 30m

Deal found 22/8£158

Best flights from Portsmouth to Ireland
Discover carefully curated flight deals from Portsmouth to Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Thu 22/1009:20 -

Nonstop1h 40m

Sun 25/1007:00 -

Nonstop1h 40m

Deal found 21/8£98

Mon 5/1019:20 -

2 stops19h 00m

Mon 12/1020:55 -

2 stops15h 55m

Deal found 23/8£139

Sat 24/1020:00 -

Nonstop1h 35m

Tue 27/1007:00 -

Nonstop1h 40m

Deal found 21/8£99

Tue 8/917:20 -

Nonstop1h 35m

Thu 10/907:00 -

Nonstop1h 40m

Deal found 23/8£109

Mon 5/1017:20 -

1 stop23h 15m

Mon 12/1006:15 -

1 stop26h 20m

Deal found 23/8£246

Thu 11/220:00 -

Nonstop1h 35m

Mon 15/207:00 -

Nonstop1h 40m

Deal found 23/8£111

Thu 10/920:00 -

Nonstop1h 35m

Wed 16/915:30 -

2 stops17h 05m

Deal found 22/8£144

Thu 10/920:00 -

Nonstop1h 35m

Sat 12/917:50 -

Nonstop1h 40m

Deal found 25/8£126

Sun 4/1012:35 -

2 stops19h 15m

Sun 11/1021:40 -

2 stops14h 10m

Deal found 22/8£155

Fri 25/920:00 -

Nonstop1h 35m

Sun 27/906:55 -

Nonstop1h 40m

Deal found 26/8£131

Fri 2/1014:30 -

2 stops17h 55m

Tue 6/1014:45 -

2 stops19h 30m

Deal found 22/8£158

Fri 27/1115:00 -

2 stops8h 50m

Sun 29/1105:55 -

1 stop9h 40m

Deal found 23/8£158

Mon 7/919:20 -

2 stops18h 10m

Fri 11/920:20 -

2 stops23h 10m

Deal found 25/8£166

Sat 3/1012:15 -

2 stops20h 15m

Mon 5/1020:55 -

2 stops15h 55m

Deal found 25/8£167

Fri 9/1019:30 -

2 stops16h 15m

Mon 12/1020:55 -

2 stops15h 55m

Deal found 26/8£191

Sun 6/1214:00 -

2 stops17h 30m

Fri 11/1214:40 -

2 stops18h 00m

Deal found 22/8£195

Sat 5/917:20 -

Nonstop1h 35m

Sat 5/921:45 -

2 stops14h 20m

Deal found 24/8£207

Fri 9/1020:00 -

2 stops36h 45m

Fri 16/1020:55 -

1 stop20h 45m

Deal found 25/8£209

Sun 13/908:55 -

2 stops10h 10m

Wed 16/906:20 -

1 stop3h 55m

Deal found 21/8£218

Find flight deals from Portsmouth to Ireland

Round-trip from	£93
One-way from	£57
Popular in	December
Cheapest in	January
Average price	£78

Aer Lingus
20/10-28/10
Nonstop
3h 15m total
Portsmouth to Ireland

Search Deals

Aer Lingus
15/9
Nonstop
1h 35m total
Portsmouth to Ireland

Search Deals

High demand for flights, 9% potential price rise

Search Deals

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

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Thu 22/10

09:20-11:00

Nonstop1h 40m

Dublin

Sun 25/10

07:00-08:40

Nonstop1h 40m

£98

Fastest return journey

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Sat 24/10

20:00-21:35

Nonstop1h 35m

Dublin

Tue 27/10

07:00-08:40

Nonstop1h 40m

£99

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Tue 8/9

17:20-18:55

Nonstop1h 35m

Dublin

Thu 10/9

07:00-08:40

Nonstop1h 40m

£109

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Thu 11/2

20:00-21:35

Nonstop1h 35m

Dublin

Mon 15/2

07:00-08:40

Nonstop1h 40m

£111

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Thu 10/9

20:00-21:35

Nonstop1h 35m

Dublin

Sat 12/9

17:50-19:30

Nonstop1h 40m

£126

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Fri 25/9

20:00-21:35

Nonstop1h 35m

Dublin

Sun 27/9

06:55-08:35

Nonstop1h 40m

£131

SouthamptonCork

SOU Southampton Eastleigh - ORK Cork

SOUORK

Southampton Eastleigh

Mon 5/10

19:20-14:20

2 stops19h 00m

Cork

Mon 12/10

20:55-12:50

2 stops15h 55m

£139

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Thu 10/9

20:00-21:35

Nonstop1h 35m

Dublin

Wed 16/9

15:30-08:35

2 stops17h 05m

£144

SouthamptonCork

SOU Southampton Eastleigh - ORK Cork

SOUORK

Southampton Eastleigh

Sun 4/10

12:35-07:50

2 stops19h 15m

Cork

Sun 11/10

21:40-11:50

2 stops14h 10m

£155

SouthamptonCork

SOU Southampton Eastleigh - ORK Cork

SOUORK

Southampton Eastleigh

Fri 2/10

14:30-08:25

2 stops17h 55m

Cork

Tue 6/10

14:45-10:15

2 stops19h 30m

£158

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 31 resultsSorted by cheapest first

Best time to book a flight from Portsmouth to Ireland

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

SOU-DUB

SOU-ORK

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 Ireland

P0R-IE0

SOU-DUB

SOU-ORK

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

It’s typically best to fly out from Portsmouth to Ireland in the afternoon. Doing so could potentially save you 28% on the flight price compared to flying in the morning, which is usually more expensive.

Weekly flight availability from Portsmouth to Ireland

The most flights from P0R to IE0 are scheduled on a Monday (76 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (40 on average).

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

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

Reviews of airlines servicing Ireland

See what other customers who have flown with KLM,Aer Lingus, andBritish Airways from Portsmouth to Ireland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,565 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

KLM

7.8

Good

1,565 reviews

KLM

7.8

Good

1,565 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Aer Lingus

7.3

Good

1,729 reviews

KLM

7.8

Good

1,565 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

British Airways

6.7

Okay

8,195 reviews

KLM

7.8

Good

1,565 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

How long is the flight from Portsmouth to Ireland?
For as low as £98, Aer Lingus can have you in Ireland from Portsmouth in 1h 40m. The distance between Portsmouth and Ireland is about 268 mi. Generally, flights for this route are direct.
What are the most reliable airlines from Portsmouth to Ireland?
Consider Air Canada (87%), Aer Lingus (80%) or Qatar Airways (80%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Ireland.
What are the cheapest flights from Portsmouth to Ireland?
Looking at all options, your cheapest flight can be booked for £62. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £95 on average, our data indicates £711 when flying from Portsmouth to Ireland.
Can I find deals for flights from Portsmouth to Ireland that include hotel bookings?
Yes. In addition to deals on Portsmouth to Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Ireland.
Can I find deals for business class flights from Portsmouth to Ireland?
Yes. Cheapflights offers flight deals from Portsmouth to 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

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Top 4 airlines flying from Portsmouth to Ireland

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£30	Average£68	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
British Airways	Cheapest£68	Average£177	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£80	Average£142	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
KLM	Cheapest£120	Average£174	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

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

When you search for this flight from Portsmouth to 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 Ireland?

Cheapflights simply makes it quick and affordable to book flights from Portsmouth to 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 Ireland with no change fees?

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

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

Of course! You can now track prices for flights from Portsmouth to Ireland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Portsmouth to Ireland from £57

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Ireland

Cheapest flights from Portsmouth to IrelandExplore the most affordable flight options available from Portsmouth to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Explore the most affordable flight options available from Portsmouth to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Best flights from Portsmouth to IrelandDiscover carefully curated flight deals from Portsmouth to Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Discover carefully curated flight deals from Portsmouth to Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Direct flights from Portsmouth to IrelandExplore direct flight options from Portsmouth to Ireland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Explore direct flight options from Portsmouth to Ireland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Last-minute flights from Portsmouth to IrelandDiscover last-minute flight deals from Portsmouth to Ireland. Data last updated 26 August 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Ireland. Data last updated 26 August 2026 and is based on user searches.

One-way flights from Portsmouth to IrelandSearch for one-way flight options from Portsmouth to Ireland. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.

Search for one-way flight options from Portsmouth to Ireland. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.

Find flight deals from Portsmouth to 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 Ireland that are best for you.

Best time to book a flight from Portsmouth to Ireland

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

Cheapflights Insights

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

Find hourly flight availability from Portsmouth to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 August 2026.

It’s typically best to fly out from Portsmouth to Ireland in the afternoon. Doing so could potentially save you 28% on the flight price compared to flying in the morning, which is usually more expensive.

Weekly flight availability from Portsmouth to Ireland

Explore weekly flight availability from Portsmouth to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 26 August 2026.

The most flights from P0R to IE0 are scheduled on a Monday (76 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (40 on average).

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Ireland. Price data was last updated on 22 August 2026.

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

Reviews of airlines servicing Ireland

See what other customers who have flown with KLM,Aer Lingus, andBritish Airways from Portsmouth to Ireland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Portsmouth to Ireland?

What are the most reliable airlines from Portsmouth to Ireland?

What are the cheapest flights from Portsmouth to Ireland?

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

How can I find direct flights from Portsmouth to Ireland?

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

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

Complete your trip

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

Direct flights to

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

Search flights from Portsmouth to Ireland by cabin class

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

Portsmouth and Ireland flights

Browse other Portsmouth and Ireland flight options. Last updated on 26 August 2026.

Popular flight searches

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Find a return flight route from Ireland

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

Portsmouth to Ireland flights

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Top 4 airlines flying from Portsmouth to Ireland

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

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Cheapest flights from Portsmouth to Ireland
Explore the most affordable flight options available from Portsmouth to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Best flights from Portsmouth to Ireland
Discover carefully curated flight deals from Portsmouth to Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Direct flights from Portsmouth to Ireland
Explore direct flight options from Portsmouth to Ireland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Last-minute flights from Portsmouth to Ireland
Discover last-minute flight deals from Portsmouth to Ireland. Data last updated 26 August 2026 and is based on user searches.

One-way flights from Portsmouth to Ireland
Search for one-way flight options from Portsmouth to Ireland. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.