How long is the flight from Portsmouth to Ireland?

For as low as £91, Aer Lingus can have you in Ireland from Portsmouth in 1h 35m. The distance between Portsmouth and Ireland is about 268 mi. Both multi-stop and direct flights can be found to your destination and back.

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 £74. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £87 on average, our data indicates £724 when flying from Portsmouth to Ireland.

What are the most reliable airlines from Portsmouth to Ireland?

Consider Air Canada (87%), Kenya Airways (81%) or Aer Lingus (80%) when booking your flight. These represent the most reliable 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.

£48+ 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 9 September 2026.

Sun 4/1009:20 -

Nonstop1h 40m

Wed 28/1007:10 -

Nonstop1h 40m

Deal found 8/9£72

Fri 2/1020:00 -

Nonstop1h 35m

Tue 27/1007:10 -

Nonstop1h 40m

Deal found 9/9£75

Fri 9/1017:20 -

Nonstop1h 35m

Tue 27/1007:10 -

Nonstop1h 40m

Deal found 9/9£75

Tue 20/1009:15 -

Nonstop1h 40m

Tue 27/1007:10 -

Nonstop1h 40m

Deal found 5/9£79

Sun 4/1009:20 -

Nonstop1h 40m

Fri 9/1007:00 -

Nonstop1h 40m

Deal found 4/9£83

Thu 15/1009:20 -

Nonstop1h 40m

Mon 19/1007:00 -

Nonstop1h 40m

Deal found 4/9£84

Sat 19/920:00 -

Nonstop1h 35m

Fri 9/1007:00 -

Nonstop1h 40m

Deal found 7/9£85

Sat 19/920:00 -

Nonstop1h 35m

Tue 22/907:00 -

Nonstop1h 40m

Deal found 9/9£86

Tue 6/1020:00 -

Nonstop1h 35m

Tue 13/1007:00 -

Nonstop1h 40m

Deal found 5/9£86

Fri 9/1020:00 -

Nonstop1h 35m

Mon 12/1007:00 -

Nonstop1h 40m

Deal found 6/9£87

Mon 28/917:20 -

Nonstop1h 35m

Fri 2/1007:00 -

Nonstop1h 40m

Deal found 4/9£88

Sat 19/920:00 -

Nonstop1h 35m

Sun 20/906:55 -

Nonstop1h 40m

Deal found 9/9£89

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 9 September 2026.

Sat 19/920:00 -

Nonstop1h 35m

Sun 20/906:55 -

Nonstop1h 40m

Deal found 5/9£91

Thu 22/1009:25 -

1 stop10h 10m

Thu 29/1007:10 -

Nonstop1h 40m

Deal found 7/9£103

Wed 3/308:40 -

1 stop23h 25m

Sat 6/308:50 -

1 stop24h 05m

Deal found 6/9£143

Fri 4/1220:00 -

Nonstop1h 40m

Sun 6/1207:00 -

Nonstop1h 45m

Deal found 9/9£92

Thu 3/1212:25 -

Nonstop1h 40m

Sat 5/1207:00 -

Nonstop1h 45m

Deal found 9/9£230

Tue 20/1018:10 -

1 stop14h 35m

Tue 27/1019:50 -

2 stops13h 00m

Deal found 5/9£138

Wed 3/217:30 -

1 stop19h 10m

Sat 20/213:25 -

1 stop19h 30m

Deal found 4/9£143

Fri 5/208:40 -

1 stop7h 40m

Sat 20/208:50 -

1 stop24h 05m

Deal found 4/9£143

Tue 6/1018:10 -

2 stops20h 15m

Tue 13/1014:45 -

2 stops19h 30m

Deal found 6/9£156

Thu 4/217:30 -

1 stop19h 10m

Fri 19/213:25 -

1 stop19h 30m

Deal found 4/9£143

Thu 22/1009:25 -

1 stop23h 35m

Thu 29/1008:50 -

2 stops24h 00m

Deal found 7/9£157

Sat 24/1017:20 -

1 stop5h 05m

Sat 31/1013:25 -

1 stop19h 30m

Deal found 9/9£148

Fri 30/1017:15 -

2 stops16h 45m

Mon 2/1110:25 -

2 stops9h 05m

Deal found 6/9£164

Fri 23/1017:20 -

1 stop5h 05m

Sat 24/1011:10 -

1 stop22h 45m

Deal found 6/9£229

Mon 2/1108:40 -

1 stop14h 45m

Thu 5/1117:30 -

1 stop14h 40m

Deal found 9/9£245

Tue 20/1017:20 -

1 stop23h 15m

Tue 27/1017:30 -

1 stop14h 40m

Deal found 5/9£247

Sat 10/1017:20 -

1 stop5h 15m

Tue 13/1006:15 -

1 stop26h 30m

Deal found 9/9£247

Find flight deals from Portsmouth to Ireland

Round-trip from	£72
One-way from	£48
Popular in	December
Cheapest in	January
Average price	£58

Aer Lingus
4/10-28/10
Nonstop
3h 20m total
Portsmouth to Ireland

Search Deals

Aer Lingus
12/10-31/12
Nonstop
1h 35m total
Portsmouth to Ireland

Search Deals

High demand for flights, 11% potential price rise

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£2 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Mon 12/10

20:00-21:35

Nonstop1h 35m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£48

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Sun 4/10

17:20-18:55

Nonstop1h 35m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£49

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Sat 17/10

20:00-21:35

Nonstop1h 35m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£50

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Wed 16/9

20:00-21:35

Nonstop1h 35m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£50

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Thu 11/2

20:00-21:40

Nonstop1h 40m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£58

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Mon 12/10

20:40-12:55

2 stops16h 15m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£72

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Sat 17/10

07:50-15:00

1 stop7h 10m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£81

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Thu 17/12

17:30-08:05

1 stop14h 35m

Dublin

Wed 31/12

00:00-00:00

Nonstop0h 00m

£89

SouthamptonCork

SOU Southampton Eastleigh - ORK Cork

SOUORK

Southampton Eastleigh

Sun 18/10

20:00-11:35

2 stops15h 35m

Cork

Wed 31/12

00:00-00:00

Nonstop0h 00m

£90

SouthamptonDublin

SOU Southampton Eastleigh - DUB Dublin

SOUDUB

Southampton Eastleigh

Sat 19/9

20:00-21:35

Nonstop1h 35m

Dublin

Sun 20/9

06:55-08:35

Nonstop1h 40m

£91

Flights are sorted by cheapest return flights first.

Deals found on 5/9

Showing 1-10 of 27 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 29% 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 Tuesday (69 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (47 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 Monday at midday when fares are most often at their lowest. Friday mornings 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 Aer Lingus and British 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.

Aer Lingus

7.3

Good

1,754 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

1,754 reviews

Aer Lingus

7.3

Good

1,754 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.

British Airways

6.7

Okay

8,209 reviews

Aer Lingus

7.3

Good

1,754 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 Ireland?
For as low as £91, Aer Lingus can have you in Ireland from Portsmouth in 1h 35m. The distance between Portsmouth and Ireland is about 268 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most reliable airlines from Portsmouth to Ireland?
Consider Air Canada (87%), Kenya Airways (81%) or Aer Lingus (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 £74. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £87 on average, our data indicates £724 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 3 airlines flying from Portsmouth to Ireland

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£30	Average£69	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
British Airways	Cheapest£69	Average£180	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£81	Average£144	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus 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?

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Cheap flights from Portsmouth to Ireland from £48

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. 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 9 September 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 9 September 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 9 September 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 9 September 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 9 September 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 9 September 2026.

Last-minute flights from Portsmouth to IrelandDiscover last-minute flight deals from Portsmouth to Ireland. Data last updated 9 September 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Ireland. Data last updated 9 September 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 9 September 2026.

Search for one-way flight options from Portsmouth to Ireland. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Find flight deals from Portsmouth to Ireland

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Popular in

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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 9 September 2026.

It’s typically best to fly out from Portsmouth to Ireland in the afternoon. Doing so could potentially save you 29% 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 9 September 2026.

The most flights from P0R to IE0 are scheduled on a Tuesday (69 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (47 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 5 September 2026.

Travellers seeking maximum savings on their Portsmouth to Ireland flight should consider departing on Monday at midday when fares are most often at their lowest. Friday mornings 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 Aer Lingus and British 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 9 September 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

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Top 3 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 9 September 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 9 September 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 9 September 2026.

Last-minute flights from Portsmouth to Ireland
Discover last-minute flight deals from Portsmouth to Ireland. Data last updated 9 September 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 9 September 2026.